Abacus Rev2
About the Abacus Rev2 PCB
Abacus Rev2 is an open source PCB design by nickolaij, published on GitHub under the MIT license. It is a 2-layer board measuring 265.1 × 76.2 mm, with 139 components from 11 distinct parts.
Other key parts include the Elite-C_Pro-Micro. By type, the board carries 45 relays, 45 diodes, 17 capacitors, 1 IC and 1 switch.
It belongs with the keyboards designs in this gallery.
From the project
A Mechanical Keyboard PCB design supported by QMK
A 45% mechanical keyboard that includes an encoder volume/scroll wheel and RGB lighting.
This keyboard is powered by QMK, visit the QMK Repository to see all the amazing keyboards supported by them.
Main components on the Abacus Rev2
Abacus Rev2 bill of materials (BOM)
139 components, 11 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Elite-C_Pro-Micro | Elite-C Pro-Micro | U1 |
| 13 | MH | M3 Hole | H1, H2, H3, H4, H5, H6, H7, H8 +5 |
| 38 | KEYSW | MX-1U-NoLED | K1, K2, K3, K4, K5, K6, K7, K8 +30 |
| 2 | KEYSW | MX-1.75U-NoLED | K12, K25 |
| 2 | KEYSW | MX-1.25U-NoLED | K13, K37 |
| 1 | KEYSW | MX-1.5U-NoLED | K24 |
| 2 | KEYSW | MX-2.75U-ReversedStabilizers-NoLED | K40, K41 |
| 1 | Rotary_Encoder_Switch | Encoder | SW1 |
| 17 | WS2812B | WS2812_Hand_Solder | W1, W2, W3, W4, W5, W6, W7, W8 +9 |
| 45 | D | Diode | D1, D2, D3, D4, D5, D6, D7, D8 +37 |
| 17 | 0.1uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8 +9 |
Abacus Rev2 design files
The KiCad project lives in the nickolaij/Abacus_Rev2 repository on GitHub; these links point at the commit this page was built from.
Abacus Rev2: common questions
How big is the Abacus Rev2 PCB?
The Abacus Rev2 measures 265.1 × 76.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Abacus Rev2?
139 components, from 11 distinct parts. The full bill of materials is listed on this page.
Where can I download the Abacus Rev2 design files?
From the nickolaij/Abacus_Rev2 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Abacus Rev2 design in my own project?
Yes, under the terms of its MIT license, which nickolaij chose for the repository.
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