2 layers82.2 × 57.8 mm
2 layers89.8 × 108 mm
Codemate v2
Aryan-git-byte/codemate-v2[ Note: the components from the quartz component and robu are budled with my other order of different project, otherwise if u are ordering it for yourself , it will be 100 rs each ]
- Size
- 89.8 × 108 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 91
- Nets
- 71
- Pads
- 319
- Tracks, vias
- 614, 55
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 19 Mar 2026
- Updated
- 28 Jun 2026
Overview
Codemate v2 is an open-source printed circuit board by Aryan-git-byte, from the Aryan-git-byte/codemate-v2 repository on GitHub, published under the MIT licence. It is a 2-layer board of 89.8 × 108 mm with 91 parts on 71 nets, routed with 614 tracks and 55 vias.
It is built around the PCF8574AP and WS2812B. Its parts include 41 diodes, 25 capacitors, 18 switches, 2 ICs and 1 resistor. It belongs with the ESP32 boards of this library.
Main components
2README
README.mdOverview:
What is this??
Yo, this is a 4x4 custom macropad that you can use for making ur life ezz, lol it has 16 macros, 2 rotary encoders, RGB lights and an OLED display. and also it is a successor of my previous macropad Codemate.
Use case:
whether you are a programmer, 3d modeller, editor or whatever u can easily use this macropad with just a little bit tweak in its firmware.
Schematic Overview:
this is the schematic of the project, which u can see here:
you can see the MCU, the key matrix, the LEDs, encoders, everything in this schematic.
why i made it??
cuz i believe that having a macropad can ezz my workflow and also give make it faster and more efficient.
PCB overview:
for this i am using a 2 layer pcb board:
How to Assemble
- get the pcb ordered and solder all the components to it carefully
- get these things 3d printed:
- cover it with the top plate
- drill a 2 mm hole near the red holes:
- insert 4 m3 inserts in these holes on the main body.
- Now, put the soldered pcb with all the components inside the main-body
- put the top panel , and put m3 screws.
- now put the keycaps and the knob onto it.
- enjoy <3
Firmware:
written in Arduino framework for ESP32-S3 Zero using these libraries:
- FastLED — RGB control
- Keypad — key matrix
- Adafruit SSD1306 — OLED
- Adafruit PCF8574 — IO expander for encoders
- USB HID (built into ESP32 Arduino core) — keyboard + media keys
flashing steps:
- opem Arduino IDE
- add ESP32 board support — paste this in Board Manager URL:
https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json - install the libraries above from Library Manager
- select board:
ESP32S3 Dev Module - plug in USB into the devboard
- upload
firmware/firmware.inofrom this repo - done
BOM:
| item name | quantity | unit price | link | total price |
|---|---|---|---|---|
| Esp32-s3 zero development board | 1 | 620 rs | link | 620 rs |
| Blue MX cherry switches ( pack of 10) | 2 | 350 rs | link | 700 rs |
| Oled 0.91" | 1 | 198 rs | link | 198 rs |
| PCF8574AP | 1 | 124 rs | link | 128 rs |
| EC11 rotary encoder | 2 | 64 rs | link | 128 rs |
| WS2812B | 40 | 4.72 rs | link | 188.80 rs |
| 470 ohm 0805 resistor (pack of 20) | 1 | 8 rs | link | 8 rs |
| 100 nF Capacitor 0603 (pack of 20) | 2 | 11 rs | link | 22 rs |
| Diode (1N4148) | 25 | 3 rs | link | 75 rs |
| hubtroncs shipping charge | 1 | 75 rs | 75 rs | |
| Meckkeys shipping charge | 1 | 100 rs | 100 rs | |
| FlyRobo shipping | 1 | 59 rs | 59 rs |
[ Note: the components from the quartz component and robu are budled with my other order of different project, otherwise if u are ordering it for yourself , it will be 100 rs each ]
Total: 2301 rs , (24 usd)
PCB will be :
7 usd, shipping will be another 10 usd, but i m getting this shipped along with my different pcb.
grand total : 31 usd
Parts
91| Qty | Value | Footprint | References |
|---|---|---|---|
| 25 | 100 nF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +9 |
| 25 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D17, D18, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D29, D30, D31, D32 +9 |
| 16 | D | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 16 | SW_SPST | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16 |
| 2 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW17, SW18 |
| 1 | 470 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | ESP32-S3-ZERO | resources:MODULE_ESP32-S3-ZERO | U1 |
| 1 | PCF8574AP | Package_DIP:DIP-16_W7.62mm | U2 |
The 88 most common of 91 parts.
Questions
How big is the Codemate v2 PCB?
It measures 89.8 × 108 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Codemate v2 use?
91 parts, built around the PCF8574AP and WS2812B. 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 Codemate v2 KiCad files?
From the Aryan-git-byte/codemate-v2 repository on GitHub, at the commit this page was made from: the board is kicad/pcb/pcb.kicad_pcb and its schematic kicad/pcb/pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Codemate v2 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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