Hackpad
About the Hackpad PCB
Hackpad is an open source PCB design by ohhjazzv, published on GitHub. It is a 2-layer board measuring 93 × 113.5 mm, with 20 components from 4 distinct parts.
Other key parts include the MOUDLE-SEEEDUINO-XIAO and ER_OLEDM0.91_1x-I2C. By type, the board carries 9 switches, 9 diodes and 2 ICs.
It belongs with the displays & leds designs in this gallery.
From the project
A 9-key hackpad on a XIAO RP2040, with a 0.91" OLED that shows the time and a fox messing about on it. Each key opens an app.
A 9-key hackpad on a XIAO RP2040, with a 0.91" OLED that shows the time and a fox messing about on it. Each key opens an app.
One printed part — a tray the board drops into. Nine 14 mm cutouts for the switches, a long window for the OLED, a USB-C opening in the side wall, and four M5 corner holes. 112 x 133 x 19 mm.
Machine-readable copy: production/bom.csv.
- MCU XIAO RP2040 (U1, 14-pin XIAO footprint) - Switches 9x Cherry MX, 3x3 matrix, 1N4148 per key, COL2ROW - Display ER-OLEDM0.911x-I2C (SSD1306 128x32) on D4/D5 - Encoder not fitted; pads D8/D9/D0 are labelled A, B, Switch for one -…
Main components on the Hackpad
Hackpad bill of materials (BOM)
20 components, 4 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MOUDLE-SEEEDUINO-XIAO | MCU_Seeed_ESP32C3 | U1 |
| 1 | ER_OLEDM0.91_1x-I2C | ER_OLEDM0.91_1x-I2C | U2 |
| 9 | SW_Push | SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +1 |
| 9 | 1N914 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8 +1 |
Hackpad design files
The KiCad project lives in the ohhjazzv/hackpad repository on GitHub; these links point at the commit this page was built from.
- LayoutPCB/catpas.kicad_pcb
- SchematicPCB/catpas.kicad_sch
- BOMproduction/bom.csv
Hackpad: common questions
How big is the Hackpad PCB?
The Hackpad measures 93 × 113.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Hackpad?
20 components, from 4 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Hackpad design files?
From the ohhjazzv/hackpad repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Hackpad design in my own project?
The repository has no license, so all rights stay with ohhjazzv. Use it as a reference, and ask the author before reusing the design.
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