2 layers60 × 111.3 mm
Silkscreen pcb
iandchasse/silkscreen-pcb
Silkscreen: open-hardware ESP32-S3 e-paper reader mainboard (KiCad 9). Formerly the de-link hub.
189 parts589CERN-OHL-S-2.0
2 layers54.6 × 46.8 mm
Anydice
karnxx/anydicei made this project as my dnd dices wud get lost alot, and it couldnt roll some numbers, and using traditional rng online is distracting.
- Size
- 54.6 × 46.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 24
- Pads
- 65
- Tracks, vias
- 177, 27
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 4 Jun 2026
- Updated
- 26 Oct 2026
Overview
Anydice is an open-source printed circuit board by karnxx, from the karnxx/anydice repository on GitHub. It is a 2-layer board of 54.6 × 46.8 mm with 15 parts on 24 nets, routed with 177 tracks and 27 vias.
It is built around the TP4056-42-ESOP8. Its parts include 4 ICs, 4 diodes, 3 capacitors, 1 resistor and 1 connector. It belongs with the ESP32 and RISC-V boards of this library.
Main components
1README
README.mdAnydice
so this is a dice which can basically roll any number, it uses a xiao esp32c3, an oled, mpu 6040. u can set the max dice roll possibility and then shake and roll it like normal to produce a randomly generated number.
i made this project as my dnd dices wud get lost alot, and it couldnt roll some numbers, and using traditional rng online is distracting.
WORKING
- so with the button you can set the max digit to roll. then u can shake the dice and actually roll it(mpu6050) to produce a final number on the oled, which is a random number between 0 and tht max digit.
PCB
- custom pcb via kicad, files here
- the pcb is mounted in the dice via screws, and the oled is mounted on the pcb with screws and spacers.
CAD
- cadded via fusion360, files here
BOM
- bom is here
| Part | Qty | Cost (₹) | Link |
|---|---|---|---|
| xiaoesp32c3 | 1 | 146.00 | https://robocraze.com/products/esp32-c3-mini-development-board-unsoldered |
| mpu6040 | 1 | 154.00 | https://robocraze.com/products/mpu-6050-triple-axis-accelerometer-gyroscope-module |
| right angle tactile pushbutton | 1 | 10.00 | https://probots.co.in/mini-push-switch-right-angled.html |
| tp4056 battery management | 1 | 36.00 | https://evelta.com/tp4056x-42-esop8-lithium-ion-battery-management-1a-ic-sop-8-ep/ |
| 250mah 3.7v li-ion | 1 | 126.00 | https://probots.co.in/3-7v-250mah-lipo-battery-502030-open-ended.html |
| capacitor 470uF | 1 | 5.00 | https://quartzcomponents.com/products/470-%C2%B5f-25v-radial-electrolytic-capacitor-through-hole |
| schottky diode | 4 | 3.00 | https://quartzcomponents.com/products/1n5819-shottky-barrier-diode |
| capacitor 0.1uF | 2 | 20.00 | https://quartzcomponents.com/products/10000-pf-0-1uf-ceramic-capacitor |
| resistor 4.7kΩ | 1 | 6.00 | https://quartzcomponents.com/products/4-7k-ohm-1-4-watt-resistor |
| OLED 1.3" 128×64 | 1 | 270.00 | https://robocraze.com/products/1-3in-oled-display |
| PCB | 1 | 1022.61 | — |
| Total | 1798.61 |
Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 1N5819 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D2, D3, D4 |
| 2 | C | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C0.1µF2, C0.1µF3 |
| 1 | Battery | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | BT1 |
| 1 | C | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C470µF1 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | ER_OLEDM0.91_1x-I2C | Display:ER_OLEDM0.91_1x-I2C | U3 |
| 1 | R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4.8 |
| 1 | SW_SPST | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx31-2LFS | SW2 |
| 1 | TP4056-42-ESOP8 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm | U4 |
| 1 | XIAO ESP32C3 | xiao:xiao_esp32c3 | U2 |
| 1 | module_mpu6050 | usini_kicad_sensors-main:module_mpu6050 | U1 |
Questions
How big is the Anydice PCB?
It measures 54.6 × 46.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Anydice use?
15 parts, built around the TP4056-42-ESOP8. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Anydice KiCad files?
From the karnxx/anydice repository on GitHub, at the commit this page was made from: the board is pcb/anydice.kicad_pcb and its schematic pcb/anydice.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Anydice design in my own project?
Its repository states no licence, so its author keeps all rights: ask karnxx before reusing the design.
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