Gem hardware
About the Gem hardware PCB
Gem hardware is an open source PCB design by ajakef, published on GitHub under the GPL-3.0 license. It is a board measuring 56 × 54 mm, with 33 components from 15 distinct parts.
Other key parts include the AD8226, AD8538, ADS1115, TCR2EF and Micro-SD. By type, the board carries 12 resistors, 8 capacitors, 7 fuses, 5 ICs and 1 switch.
Main components on the Gem hardware
Gem hardware bill of materials (BOM)
33 components, 15 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AD8226 | SO8 | IC1 |
| 1 | AD8538 | SO8 | IC2 |
| 1 | ADS1115 | MSOP-10_3x3mm_Pitch0.5mm | U1 |
| 1 | TCR2EF | SC-74A | U2 |
| 1 | Micro-SD | Micro-SD | U3 |
| 7 | FB | C_0805 | F1, F2, F3, F4, F5, F6, F7 |
| 1 | ~ | EG1218 | S1 |
| 7 | 0.1uF | C_0805 | C1, C2, C3, C4, C5, C6, C7 |
| 1 | 22 uF | C_0805 | C8 |
| 4 | 47k | R_0805 | R1, R2, R3, R4 |
| 1 | 2.2k | R-TH-VERT | R5 |
| 3 | 470 | R_0805 | R6, R7, R8 |
| 1 | 22k | R_0805 | R9 |
| 1 | 100k | R_0805 | R10 |
| 2 | 2.2k | R_0805 | R11, R12 |
Gem hardware design files
The KiCad project lives in the ajakef/gem-hardware repository on GitHub; these links point at the commit this page was built from.
- LayoutGem.kicad_pcb
Gem hardware: common questions
How big is the Gem hardware PCB?
The Gem hardware measures 56 × 54 mm and is 1.6 mm thick.
How many components are on the Gem hardware?
33 components, from 15 distinct parts. The full bill of materials is listed on this page.
Where can I download the Gem hardware design files?
From the ajakef/gem-hardware repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Gem hardware design in my own project?
Yes, under the terms of its GPL-3.0 license, which ajakef chose for the repository.