4 layers30 × 25 mm
ED052TC4-Adapter
ddB0515/epdInky
ESP32-P4 board for driving RAW E-Ink display panels
22 parts4Apache-2.0
2 layers40 × 25 mm
EPD Adapter
ddB0515/epdInky4ESP32-P4 board for driving RAW E-Ink display panels
- Size
- 40 × 25 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 46
- Nets
- 35
- Pads
- 100
- Tracks, vias
- 143, 28
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 20 Apr 2026
- Updated
- 8 Sep 2026
Overview
EPD Adapter is an open-source printed circuit board by ddB0515, from the ddB0515/epdInky repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 40 × 25 mm with 46 parts on 35 nets, routed with 143 tracks and 28 vias.
It is built around the X05A20L40T. Its parts include 1 IC and 1 connector. It belongs with the lEDs and displays and interfaces and adapters boards of this library.
Main components
1README
README.mdepdInky
ESP32-P4 board for driving RAW E-Ink display panels, epdInky is powered by ESP32-P4 and companion ESP32-C6 for WiFi
If you wanna get one for yourself hop to shop: https://shop.fasani.de/en_US/products/epdinky
Software side:
BSP package for this board is here: https://github.com/ddB0515/bsp_epdInky_r2
examples in this folder use FastEPD
*support for epdiy is coming soon
Hardware Specifications
SoC
- Model: Espressif Systems ESP32-P4NRW32
CPU
- Dual-core 32-bit RISC-V High-Performance (HP) CPU
- Up to 400 MHz
- AI instruction extension
- Single-precision FPU
- Single-core RISC-V Low-Power (LP) MCU
- Up to 40 MHz
Memory
- 768 KB HP L2MEM (shared by dual-core CPU)
- 32 KB LP SRAM
- 8 KB TCM (for LP MCU core)
- 32 MB PSRAM
Storage
- Internal ROM
- 128 KB HP ROM
- 16 KB LP ROM
- Flash
- 32 MB QSPI NOR Flash
- Expandable
- MicroSD card slot
Graphics & Video
- GPU: 2D Pixel Processing Accelerator (PPA)
- VPU: H.264 and JPEG codec support
Camera
- MIPI CSI camera sensor interface
Wireless
- Companion chip: ESP32-C6
- 2.4 GHz Wi-Fi 6
- Bluetooth 5.x Low Energy (LE)
- IEEE 802.15.4 radio
- Zigbee
- Thread
- Matter
USB
- USB Type-C port
- Power
- Debugging
Sensors
- 6-axis KXTJ3-1057 motion sensor
- Portrait/landscape orientation detection
Miscellaneous
- Reset button
- Boot button
- Power LED
- Battery LED
- RV-3028-C7 RTC with timed interrupt wake-up support
Power Supply
- 5V via USB Type-C
- JST battery connector
Dimensions
- 100 × 55 mm
I2C peripherals:
- TPS651851RSLR - PMIC for e-Ink (I2C addr: 0x68)
- KXTJ3-1057 - 3-axis accelerometar (I2C addr: 0x0F)
- RV-3028-C7 - RTC (I2C addr: 0x52)
- STC3115AIQT - Fuel guage (I2C addr: 0x70)
- TCA6408ARGTR - GPIO Extender (I2C addr: 0x21)
- TP4056 Battery charger (500mA)
Parts
46| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | MountingHole | MountingHole:MountingHole_2.2mm_M2_Pad_Via | H1, H2 |
| 1 | Conn_02x20_Odd_Even | Connector_PinHeader_1.27mm:PinHeader_2x20_P1.27mm_Vertical_SMD | J3 |
| 1 | G*** | kibuzzard-69D688B8 | kibuzzard-69D688B8 |
| 1 | G*** | kibuzzard-69D68817 | kibuzzard-69D68817 |
| 1 | G*** | kibuzzard-69D688E7 | kibuzzard-69D688E7 |
| 1 | G*** | kibuzzard-69D688E1 | kibuzzard-69D688E1 |
| 1 | G*** | kibuzzard-69D688A8 | kibuzzard-69D688A8 |
| 1 | G*** | kibuzzard-643538E9 | kibuzzard-643538E9 |
| 1 | G*** | kibuzzard-69D687E9 | kibuzzard-69D687E9 |
| 1 | G*** | kibuzzard-69D688C3 | kibuzzard-69D688C3 |
| 1 | G*** | kibuzzard-69D688B2 | kibuzzard-69D688B2 |
| 1 | G*** | kibuzzard-69D68890 | kibuzzard-69D68890 |
| 1 | G*** | kibuzzard-69D68827 | kibuzzard-69D68827 |
| 1 | G*** | kibuzzard-69D6888B | kibuzzard-69D6888B |
| 1 | G*** | kibuzzard-69D687C8 | kibuzzard-69D687C8 |
| 1 | G*** | kibuzzard-69D687A5 | kibuzzard-69D687A5 |
| 1 | G*** | kibuzzard-69D688A1 | kibuzzard-69D688A1 |
| 1 | G*** | kibuzzard-69D688ED | kibuzzard-69D688ED |
| 1 | G*** | kibuzzard-69D688BD | kibuzzard-69D688BD |
| 1 | G*** | kibuzzard-69D688F3 | kibuzzard-69D688F3 |
| 1 | G*** | kibuzzard-69D688DA | kibuzzard-69D688DA |
| 1 | G*** | kibuzzard-69D6879B | kibuzzard-69D6879B |
| 1 | G*** | kibuzzard-69D68791 | kibuzzard-69D68791 |
| 1 | G*** | kibuzzard-69D68874 | kibuzzard-69D68874 |
| 1 | G*** | kibuzzard-69D687F1 | kibuzzard-69D687F1 |
| 1 | G*** | kibuzzard-69D688AE | kibuzzard-69D688AE |
| 1 | G*** | kibuzzard-69D687F8 | kibuzzard-69D687F8 |
| 1 | G*** | kibuzzard-69D68788 | kibuzzard-69D68788 |
| 1 | G*** | kibuzzard-69D687BA | kibuzzard-69D687BA |
| 1 | G*** | kibuzzard-69D68783 | kibuzzard-69D68783 |
| 1 | G*** | kibuzzard-69FC895D | kibuzzard-69FC895D |
| 1 | G*** | kibuzzard-69D687D8 | kibuzzard-69D687D8 |
| 1 | G*** | kibuzzard-69D6881E | kibuzzard-69D6881E |
| 1 | G*** | kibuzzard-69D6880A | kibuzzard-69D6880A |
| 1 | G*** | kibuzzard-69D687E0 | kibuzzard-69D687E0 |
| 1 | G*** | kibuzzard-69D6887D | kibuzzard-69D6887D |
| 1 | G*** | kibuzzard-69C13134 | kibuzzard-69C13134 |
| 1 | G*** | kibuzzard-69D68802 | kibuzzard-69D68802 |
| 1 | G*** | kibuzzard-69D687CF | kibuzzard-69D687CF |
| 1 | G*** | kibuzzard-69D68770 | kibuzzard-69D68770 |
| 1 | G*** | kibuzzard-69D68895 | kibuzzard-69D68895 |
| 1 | G*** | kibuzzard-69FC88FD | kibuzzard-69FC88FD |
| 1 | G*** | kibuzzard-69D688D4 | kibuzzard-69D688D4 |
| 1 | G*** | kibuzzard-69D68884 | kibuzzard-69D68884 |
| 1 | X05A20L40T | kicad-libs-connectors:X05A20L40T-2 | U1 |
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Questions
How big is the EPD Adapter PCB?
It measures 40 × 25 mm and has 2 copper layers, 1.6 mm thick.
What parts does the EPD Adapter use?
46 parts, built around the X05A20L40T. 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 EPD Adapter KiCad files?
From the ddB0515/epdInky repository on GitHub, at the commit this page was made from: the board is hw/adapters/EPD-Adapter/EPD-Adapter.kicad_pcb and its schematic hw/adapters/AllInOneAdapter-39pin/AllInOneAdapter-39pin.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the EPD Adapter design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).