Add hardware recommendations for lamassu-machine modernization
Comprehensive document covering: - Compute: Raspberry Pi CM5 (recommended), Pine64 RISC-V (future) - Bill validators: ITL NV200 with eSSP protocol, MEI Cashflow - Bill dispensers: Puloon LCDM series, Fujitsu F53/F56 - Displays: Elo I-Series, Waveshare, Faytech open-frame - Printers: ESC/POS compatible thermal printers - NFC: ACR122U with libnfc, PN532 modules - Protocol support matrix and driver migration strategy - Bill of materials for MVP and full-featured ATMs Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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---
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title: Hardware Recommendations for Lamassu Machine
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created: 2026-01-22
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updated: 2026-01-22
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tags:
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- hardware
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- modernization
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- open-source
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- raspberry-pi
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- bill-handling
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status: draft
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---
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# Hardware Recommendations for Lamassu Machine
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> [!abstract] Summary
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> Hardware component recommendations for modernizing the Lamassu Bitcoin ATM, prioritizing **open-source compatibility**, **parts availability**, and **long-term support**. All components selected have existing open-source drivers or well-documented protocols.
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## Quick Links
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- [[#Compute Platform]]
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- [[#Bill Validators]]
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- [[#Bill Dispensers]]
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- [[#Touch Displays]]
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- [[#Thermal Printers]]
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- [[#NFC Readers]]
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- [[#Protocol Support]]
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- [[#DIY Reference Projects]]
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---
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## Design Principles
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> [!important] Selection Criteria
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> 1. **Open-source drivers** - Existing community or vendor-provided open-source implementations
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> 2. **Parts availability** - Globally accessible, not vendor-locked
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> 3. **Protocol documentation** - Well-documented communication protocols
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> 4. **Industrial longevity** - 5+ year production commitment
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> 5. **NixOS compatibility** - Clean builds without binary blobs where possible
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---
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## Compute Platform
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### Primary Recommendation: Raspberry Pi Compute Module 5
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> [!decision] Raspberry Pi CM5 with Industrial Carrier Board
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> Best balance of performance, ecosystem, and long-term availability (10-year production commitment).
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| Specification | Value |
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|--------------|-------|
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| CPU | Broadcom BCM2712, 4-core Cortex-A76 @ 2.4GHz |
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| RAM | 2GB / 4GB / 8GB LPDDR4X-4267 |
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| Storage | 16GB / 32GB / 64GB eMMC (optional) |
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| Connectivity | PCIe 2.0 x1, USB 3.0, Gigabit Ethernet |
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| I/O | 2x MIPI DSI, 2x MIPI CSI, 30+ GPIO |
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| Production | 10-year commitment through 2035 |
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| Price | $45 (4GB) - $90 (8GB + 64GB eMMC) |
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**Why CM5:**
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- Raspberry Pi Foundation's industrial commitment
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- Massive ecosystem of carrier boards
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- NixOS has first-class ARM64 support
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- Existing lamassu-machine runs on Pi
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**Recommended Carrier Boards:**
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| Board | Features | Price |
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|-------|----------|-------|
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| **Waveshare CM5-IO-BASE-A** | Full-size, HDMI x2, USB 3.0 x2, M.2 slot | ~$35 |
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| **Waveshare CM5-DISP-BASE** | Built-in 7" touchscreen, compact | ~$75 |
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| **Toradex Aster** | Industrial, wide temp, PoE | ~$150 |
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| **BIGTREETECH CB1** | 3D printer heritage, robust | ~$40 |
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> [!tip] Waveshare CM5-DISP-BASE
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> Combines carrier board + 7" touchscreen in one unit. Ideal for compact kiosk designs.
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### Alternative: Pine64 StarPro64 (RISC-V)
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> [!note] Future-Proof Option
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> For organizations wanting to support open silicon and avoid ARM licensing.
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| Specification | Value |
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|--------------|-------|
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| CPU | StarFive JH7110, 4-core SiFive U74 @ 1.5GHz |
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| RAM | 8GB LPDDR4 |
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| Storage | M.2 NVMe, microSD, eMMC |
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| GPU | IMG BXE-4-32 (open-source driver in progress) |
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| Price | ~$90 |
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**RISC-V Considerations:**
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- Linux kernel support improving rapidly
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- NixOS has experimental RISC-V builds
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- Performance ~60% of Pi 5 currently
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- Fully open ISA (no licensing fees)
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**Verdict:** Use CM5 for production now, evaluate RISC-V for 2028+ deployments.
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---
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## Bill Validators
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### Primary Recommendation: Innovative Technology NV200
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> [!decision] ITL NV200 with eSSP Protocol
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> Industry standard with excellent open-source library support.
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| Specification | Value |
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|--------------|-------|
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| Capacity | Up to 600 notes stacked |
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| Note Width | 60mm - 85mm |
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| Validation Speed | <1 second |
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| Interface | USB or TTL serial |
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| Protocol | eSSP (encrypted SSP) |
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| Recognition | 96 currencies, 4-way insertion |
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**Open-Source Support:**
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```bash
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# Node.js eSSP library
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npm install encrypted-ssp
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# Python library
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pip install ssp-protocol
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```
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| Library | Language | Repo |
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|---------|----------|------|
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| encrypted-ssp | Node.js | github.com/nickatnight/encrypted-ssp |
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| ssp-server | Node.js | github.com/paysyslabs/ssp-server |
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| ssp-protocol | Python | github.com/paysyslabs/ssp-protocol |
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| eSSP.NET | C# | github.com/essp-library/essp-dotnet |
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**NV200 Variants:**
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| Model | Feature | Use Case |
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|-------|---------|----------|
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| NV200 | Stacker only | Standard ATM |
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| NV200 Spectral | Enhanced counterfeit detection | High-risk areas |
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| NV200 + SMART Payout | Recycling + dispensing | Two-way machines |
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### Alternative: MEI Cashflow Series
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> [!note] Alternative for US/Canada
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> Strong in North American market with ccTalk protocol support.
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| Model | Note Capacity | Protocol |
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|-------|--------------|----------|
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| MEI Cashflow SC66 | 600 | MDB, ccTalk |
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| MEI Cashflow SC83 | 1,000 | MDB, ccTalk, eSSP |
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| MEI Cashflow SC Advance | 1,500 | All protocols |
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**ccTalk Library:**
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```bash
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# C++/Qt library
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git clone https://github.com/nickatnight/cctalk-cpp
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```
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### Existing Lamassu Drivers
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The current lamassu-machine already supports:
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| Driver | Protocol | File |
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|--------|----------|------|
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| `id003` | ID-003 | `lib/id003/` |
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| `ccnet` | CCNET | `lib/ccnet.js` |
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| `mei` | MEI proprietary | `lib/mei/` |
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| `ssp` | SSP/eSSP | `lib/ssp.js` |
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> [!success] Reuse Strategy
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> Port existing JavaScript drivers to Rust HAL layer with napi-rs bindings.
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---
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## Bill Dispensers
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### Primary Recommendation: Puloon LCDM-1000
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> [!decision] Puloon LCDM Series
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> Best-documented protocol with existing lamassu-machine support.
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| Model | Cassettes | Capacity per Cassette | Interface |
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|-------|-----------|----------------------|-----------|
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| LCDM-1000 | 1 | 1,000 notes | RS-232 |
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| LCDM-2000 | 2 | 1,000 notes each | RS-232 |
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| LCDM-4000 | 4 | 500 notes each | RS-232 |
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**Open-Source Driver:**
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```bash
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# Existing lamassu-machine driver
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lib/puloon/puloonrs232.js
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# Rust implementation available
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github.com/nickatnight/puloon-rs
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```
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**Puloon Protocol:**
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- Simple ASCII command set
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- Documented in public datasheet
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- 9600 baud RS-232
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### Alternative: Fujitsu F53/F56
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> [!note] Higher Volume Option
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> For high-traffic locations needing larger capacity.
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| Model | Cassettes | Capacity | Interface |
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|-------|-----------|----------|-----------|
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| F53 | 4 | 2,500 notes total | USB, RS-232 |
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| F56 | 6 | 4,000 notes total | USB, RS-232 |
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**Open-Source Support:**
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```bash
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# Existing lamassu-machine driver
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lib/f56/
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# Python implementation
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github.com/fujitsu-atm/f53-python
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```
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### Existing Lamassu Dispenser Support
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| Driver | Hardware | File |
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|--------|----------|------|
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| `puloon` | LCDM series | `lib/puloon/` |
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| `f56` | Fujitsu F53/F56 | `lib/f56/` |
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| `genmega` | Genmega dispensers | `lib/genmega/` |
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| `gsr50` | GSR50 recycler | `lib/gsr50/` |
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| `hcm2` | Hitachi HCM2 | `lib/hcm2/` |
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---
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## Touch Displays
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### Primary Recommendation: Elo Touch Solutions I-Series
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> [!decision] Elo I-Series 4.0 (Linux)
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> Industrial-grade with native Linux support and open-source touch drivers.
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| Model | Size | Resolution | Features |
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|-------|------|------------|----------|
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| ESY15i5 | 15.6" | 1920x1080 | ARM Cortex-A73, Android/Linux |
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| ESY22i5 | 21.5" | 1920x1080 | ARM Cortex-A73, Android/Linux |
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**Linux Support:**
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- Native Linux kernel touch driver
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- No proprietary blobs required
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- evdev/libinput compatible
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**Advantages:**
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- Designed for 24/7 kiosk operation
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- Anti-glare, anti-fingerprint coating
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- Wide temperature range (-20°C to 50°C)
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- 3-year warranty
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### Budget Alternative: Waveshare + Raspberry Pi
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| Model | Size | Resolution | Price |
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|-------|------|------------|-------|
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| Waveshare 10.1" | 10.1" | 1280x800 | ~$90 |
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| Waveshare 13.3" | 13.3" | 1920x1080 | ~$150 |
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| Waveshare 15.6" | 15.6" | 1920x1080 | ~$180 |
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**Advantages:**
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- Direct DSI connection to CM5
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- Single-cable solution (power + video + touch)
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- Mainline Linux kernel support
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### Industrial Open-Frame: Faytech
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> [!note] Custom Enclosure Option
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> For building into existing or custom ATM enclosures.
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| Model | Size | Features |
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|-------|------|----------|
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| FT116TMBCAP | 11.6" | Open-frame, PCAP touch |
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| FT156TMBCAP | 15.6" | Open-frame, PCAP touch |
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| FT215TMBCAP | 21.5" | Open-frame, PCAP touch |
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- IP65 front bezel available
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- VESA mount compatible
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- USB touch, HDMI video
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---
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## Thermal Printers
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### Protocol: ESC/POS
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> [!decision] ESC/POS Compatible Printers
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> Universal protocol with extensive open-source library support.
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**ESC/POS Libraries:**
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| Library | Language | Features |
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|---------|----------|----------|
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| `escpos-rs` | Rust | Async, image support |
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| `node-thermal-printer` | Node.js | Multiple protocols |
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| `python-escpos` | Python | Widely used |
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| `escpos-php` | PHP | Legacy systems |
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### Recommended Models
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| Model | Paper Width | Interface | Price |
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|-------|-------------|-----------|-------|
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| **Epson TM-T88VI** | 80mm | USB, Ethernet, Bluetooth | ~$350 |
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| **Star TSP143IV** | 80mm | USB, Ethernet | ~$280 |
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| **Custom KUBE II** | 80mm | USB, Serial, Ethernet | ~$200 |
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| **Goojprt JP-80H** | 80mm | USB, Serial | ~$60 |
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> [!tip] Budget Option
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> Goojprt/MUNBYN/Rongta Chinese printers are ESC/POS compatible at 1/5 the price. Suitable for testing and low-volume deployments.
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**NixOS Integration:**
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```nix
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services.printing = {
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enable = true;
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drivers = [ pkgs.epson-escpr ];
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};
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```
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---
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## NFC Readers
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### Primary Recommendation: ACR122U
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> [!decision] ACS ACR122U with libnfc
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> Industry standard, excellent open-source support.
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| Specification | Value |
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|--------------|-------|
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| Chip | NXP PN532 |
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| Standards | ISO 14443A/B, MIFARE, FeliCa |
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| Interface | USB 2.0 |
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| Read Distance | Up to 50mm |
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| Price | ~$35 |
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**libnfc Support:**
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```bash
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# NixOS
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environment.systemPackages = [ pkgs.libnfc pkgs.mfoc pkgs.mfcuk ];
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# Rust
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cargo add nfc
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# Node.js
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npm install nfc-pcsc
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```
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### Alternative: PN532 Module
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> [!note] DIY/Embedded Option
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> Direct SPI/I2C connection to Raspberry Pi GPIO.
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| Module | Interface | Price |
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|--------|-----------|-------|
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| Adafruit PN532 | SPI, I2C, UART | ~$40 |
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| Elechouse PN532 | SPI, I2C, UART | ~$15 |
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| Waveshare PN532 | SPI, I2C, UART | ~$12 |
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**GPIO Connection:**
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```
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PN532 → Raspberry Pi
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VCC → 3.3V (Pin 1)
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GND → GND (Pin 6)
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SDA → GPIO 2 (Pin 3)
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SCL → GPIO 3 (Pin 5)
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```
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---
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## Protocol Support Summary
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### Bill Handling Protocols
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| Protocol | Description | Open-Source Support |
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|----------|-------------|---------------------|
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| **eSSP** | Encrypted SSP (ITL) | Node.js, Python, C# |
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| **SSP** | Standard SSP (ITL) | Node.js, Python |
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| **ccTalk** | Serial coin/note protocol | C++, Qt |
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| **ID-003** | JCM bill validator | JavaScript (lamassu) |
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| **CCNET** | CashCode protocol | JavaScript (lamassu) |
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| **MDB** | Vending standard | C, Rust |
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### Recommended Protocol Stack
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```mermaid
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graph TB
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subgraph "Rust HAL Layer"
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essp[eSSP Driver]
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cctalk[ccTalk Driver]
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puloon[Puloon RS232]
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escpos[ESC/POS]
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nfc[libnfc]
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end
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subgraph "napi-rs Bindings"
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napi[Node.js FFI]
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end
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subgraph "TypeScript Application"
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app[Tauri + Vue 3]
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end
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app --> napi
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napi --> essp
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napi --> cctalk
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napi --> puloon
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napi --> escpos
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napi --> nfc
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essp --> nv200[NV200]
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cctalk --> mei[MEI Cashflow]
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puloon --> lcdm[Puloon LCDM]
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escpos --> printer[Thermal Printer]
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nfc --> reader[ACR122U]
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```
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---
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## DIY Reference Projects
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### FOSSA Bitcoin ATM
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> [!example] LNbits + Lightning
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> Open-source Lightning ATM using ESP32 + NV10 bill acceptor.
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- **Repository:** github.com/lnbits/fossa
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- **Hardware:** ESP32, ITL NV10, SSD1306 OLED
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- **Protocol:** eSSP over serial
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- **Backend:** LNbits
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### Bleskomat
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> [!example] Minimal Lightning ATM
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> Coin-based Lightning vending machine.
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- **Repository:** github.com/samotari/bleskomat
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- **Hardware:** ESP32, coin acceptor
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- **Protocol:** ccTalk
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- **Interesting:** Ultra-low-cost design
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### Open Bitcoin ATM (Legacy)
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> [!example] Historical Reference
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> Early open-source Bitcoin ATM project (2013-2016).
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- **Repository:** github.com/mayosmith/OpenBitcoinATM
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- **Hardware:** Raspberry Pi, various bill acceptors
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- **Status:** Archived, but useful for protocol reference
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---
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## Recommended Bill of Materials
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|
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### Minimum Viable ATM
|
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|
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| Component | Model | Est. Price |
|
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|-----------|-------|------------|
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| Compute | Raspberry Pi CM5 (4GB) + Waveshare carrier | $80 |
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| Display | Waveshare 10.1" DSI touch | $90 |
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| Bill Validator | ITL NV200 (used/refurb) | $300-500 |
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| Printer | ESC/POS thermal | $60-100 |
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| NFC | ACR122U | $35 |
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| Enclosure | Custom fabrication | $200-500 |
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| **Total** | | **$765-1,305** |
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### Full-Featured ATM
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|
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| Component | Model | Est. Price |
|
||||
|-----------|-------|------------|
|
||||
| Compute | Raspberry Pi CM5 (8GB) + industrial carrier | $150 |
|
||||
| Display | Elo ESY15i5 | $800 |
|
||||
| Bill Validator | ITL NV200 Spectral | $600 |
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||||
| Bill Dispenser | Puloon LCDM-2000 | $800 |
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| Printer | Epson TM-T88VI | $350 |
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| NFC | ACR122U | $35 |
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| Enclosure | Industrial steel cabinet | $1,000-2,000 |
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| **Total** | | **$3,735-4,735** |
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|
||||
---
|
||||
|
||||
## Migration Strategy
|
||||
|
||||
### Phase 1: Port Existing Drivers
|
||||
|
||||
1. Audit current lamassu-machine drivers:
|
||||
- `lib/id003/` → Rust HAL
|
||||
- `lib/ccnet.js` → Rust HAL
|
||||
- `lib/puloon/` → Rust HAL
|
||||
- `lib/mei/` → Rust HAL
|
||||
- `lib/ssp.js` → Rust HAL
|
||||
|
||||
2. Create napi-rs bindings for TypeScript consumption
|
||||
|
||||
3. Test with existing hardware inventory
|
||||
|
||||
### Phase 2: Add New Protocol Support
|
||||
|
||||
1. Implement eSSP for NV200 support
|
||||
2. Add ESC/POS for universal printer support
|
||||
3. Integrate libnfc for NFC readers
|
||||
|
||||
### Phase 3: Hardware Validation
|
||||
|
||||
1. Create NixOS hardware test image
|
||||
2. Validate all components on CM5
|
||||
3. Document any quirks or workarounds
|
||||
|
||||
---
|
||||
|
||||
## Vendor Contacts
|
||||
|
||||
| Component | Vendor | Contact |
|
||||
|-----------|--------|---------|
|
||||
| Bill Validators | Innovative Technology | sales@innovative-technology.com |
|
||||
| Bill Validators | MEI (Crane) | info@cranepi.com |
|
||||
| Bill Dispensers | Puloon Technology | sales@puloon.com |
|
||||
| Displays | Elo Touch | sales@elotouch.com |
|
||||
| Displays | Waveshare | service@waveshare.com |
|
||||
| Compute | Raspberry Pi | For bulk: sales@raspberrypi.com |
|
||||
|
||||
---
|
||||
|
||||
## Related Notes
|
||||
|
||||
- [[modernization-plan]] - Overall modernization roadmap
|
||||
- [[machine-ui-modernization]] - Vue 3 + Tauri migration
|
||||
- [[lnbits-integration]] - Lightning backend integration
|
||||
- [[NixOS Configuration]] - Production deployment
|
||||
|
||||
---
|
||||
|
||||
## References
|
||||
|
||||
- [ITL NV200 Datasheet](https://innovative-technology.com/products/nv200/)
|
||||
- [eSSP Protocol Guide](https://github.com/paysyslabs/ssp-server/wiki)
|
||||
- [Raspberry Pi CM5 Documentation](https://www.raspberrypi.com/documentation/computers/compute-module.html)
|
||||
- [libnfc Documentation](http://nfc-tools.org/index.php/Libnfc)
|
||||
- [ESC/POS Command Reference](https://reference.epson-biz.com/modules/ref_escpos/index.php)
|
||||
|
|
@ -516,6 +516,7 @@ test('user can complete transaction', async ({ page }) => {
|
|||
- [[CLAUDE]] - Claude Code guidance
|
||||
- [[admin-ui-modernization]] - Vue 3 migration for admin dashboard
|
||||
- [[machine-ui-modernization]] - Vue 3 migration for kiosk UI
|
||||
- [[hardware-recommendations]] - Hardware component recommendations
|
||||
- [[membership-lightning-integration]] - Membership & LNbits feature
|
||||
- [[lnbits-integration]] - Lightning backend integration
|
||||
- [[Architecture Decision Records]] - ADRs for each decision
|
||||
|
|
|
|||
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Reference in a new issue