Build Guide
Please, use iBom file for the correct placement of components on the PCB
| Name | Qty | Package | Value | Aliexpress | Mark |
|---|---|---|---|---|---|
| Holyiot | 1 | SMD | YJ-18010 | 6.80$ / 1 | Unshilded version |
| Diode | 45 | SOD-123 | 1N5819 | 0.99$ / 100 | |
| Resistor | 1 | SMD 0603 | 2M | 0.48$ / 100 | |
| Resistor | 1 | SMD 0603 | 820k | 0.48$ / 100 | |
| Resistor | 1 | SMD 0603 | 3.3k | 0.48$ / 100 | |
| Resistor | 1 | SMD 0603 | 100k | 0.48$ / 100 | |
| Resistor | 2 | SMD 0603 | 5.1k | 0.48$ / 100 | |
| Resistor | 2 | SMD 0603 | 1k | 0.48$ / 100 | |
| LED's | 1 | SMD 0603 | Red & Blue | 0.88$ / 100 | |
| Charger | 1 | SOT-23-5 | MCP73831 | 0.98$ / 10 | |
| P-MOSFET | 1 | SOT-23 | AO3407 | 1.15$ / 50 | |
| VCC Regulator | 1 | SOT-23-5 | AP2112K | 0.82$ / 10 | |
| USB Connector | 1 | SMD | 1.6mm | 1.17$ / 10 | |
| Power Switch | 1 | SMD | MSK12C02 | 1.39$ / 50 | |
| Reset Switch | 1 | SMD | 5.2x5.2x1.5 | 0.64$ / 50 | |
| Hotswap Sockets | 44 | SMD | MX | 3.40$ / 30 | |
| Battery Connector | 1 | JST 1.25 | 2 Pin | 1.64$ / 50 | Straight needle |
| JST Male Wire | 1 | JST 1.25 | 2 Pin | 0.70$ / 20 | Red black, 40mm |
| Battery | 1 | 502035 | 300mAh | 3.65$ / 1 |
- Holyiot module have several verison:
- Instead of AP2112K VCC Regulator you can use XC6220. It's more expensive, but have leaks around 8uA vs 55uA at AP2112K. Using XC6220 will help save battery charge.
- Power switch also name as a PCM12, thats can help you to find them in other places.
- In current BOM i placed link for new colored Kailh MX hotswap sockets, they more cheaper for now moment, but you can use any Kailh MX footprint friendly sockets.
- You can choose any battery, that fits the size 5x20x35mm (0.19x0.79x1.38").
FR-4 case, as well as the PCB, have cutoffs for breaking off pinky-key.
| Part | Size | Length | Qty | Aliexpress |
|---|---|---|---|---|
| Standoffs | M2 | 8mm | 8 | 2.46$ / 10 |
| Screws | M2 | 5mm | 16 | 1.14$ / 25 |