4 layers59.7 × 30.5 mm
2 layers44.6 × 85.1 mm
Eink
dopmore/einkA custom e-ink Ebook reader with SD card storage
- Size
- 44.6 × 85.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 66
- Nets
- 81
- Pads
- 273
- Tracks, vias
- 538, 290
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 2 Apr 2026
- Updated
- 11 May 2026
Overview
Eink is an open-source printed circuit board by dopmore, from the dopmore/eink repository on GitHub. It is a 2-layer board of 44.6 × 85.1 mm with 66 parts on 81 nets, routed with 538 tracks and 290 vias.
It is built around the RP2040, MBR0530 and AO3401A, with the SI1308EDL among its other parts. Its parts include 30 capacitors, 15 resistors, 5 ICs, 5 diodes and 3 switches. It belongs with the lEDs and displays boards and the RP2040 boards of this library.
Main components
4
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
MBR0530
SOD-1231 Independent 30V 5.5A 500mA 550mV@500mA 80uA@30V SOD-123 Schottky Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Schottky Diodes
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
SI1308EDL
SC-70-3-55℃~+150℃ 1 N-channel 1.4nC@10V 1.5A 1.5V 105pF 11pF 132mΩ@10V 23pF 30V 400mW N-Channel SOT-323 MOSFETs ROHSVishay IntertechnologyMOSFETs
README
README.mdTiny-e-ink-Ebook-reader
This project aims to create a small portable e-reader, using an E-ink Display and a SD-card for storage. It includes a Multi Directional Switch and a Select Button for inputs. While the MDS is for navigation (Next Page / Last Page), the select button is used to make a book mark and the middle button of the MDS then can be used to go back to the saved bookmark.
I wanted to make this to be able to read books anywhere at any time without needing to carry around a big e-reader or get distracted by my phone :)!
CAD / Assembly
The Assembly is easy as the case consists of only two parts that slide into each other and trap the PCB + Battery in between.
PCB
The PCB will be soldered using a hotplate.
Schematics
PCB-order:
Parts (LCSC):
BOM
| Component | Link / Company | Price | Shipping |
|---|---|---|---|
| PCB + Stencil | jlcpcb.com | $12.44 | free (coupon) |
| PCB-Parts | lcsc.com | $15.42 | $8.95 |
| 103450 3,7 V 1500 mAh Polymer-Lithium-Akku jst PH 2,0 mm | https://www.aliexpress.com/item/1005009590723370.html | $7.60 | free |
| E-paper Screen 296x128 (GDEY029T94) | https://buy-lcd.com/products/29-inch-e-paper-screen-296x128-raspberry-pi-spi-display-gdey029t94?VariantsId=10173 | $7.91 | $10 |
Total: 62.32 (Incl. Shipping)
Parts-Bom
| Index | LCSC# | MPN | Manufacturer | Package | Customer # | Description | RoHS | Quantity | MOQ | Multiple | Unit Price ($) | Extended Price ($) | Product Link |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | C325532 | RMC04022.21%N | TyoHM | 0402 | 2.2Ω ±1% 62.5mW 0402 Thick Film Resistor | yes | 100 | 100 | 100 | 0.0034 | 0.34 | https://www.lcsc.com/product-detail/C325532.html | |
| 2 | C71911 | 16-213SDRC/S530-A3/TR8 | EVERLIGHT | 0402 | Red 650nm LED Indication - Discrete 2V 0402 | yes | 20 | 20 | 20 | 0.0330 | 0.66 | https://www.lcsc.com/product-detail/C71911.html | |
| 3 | C77336 | MBR0530 | JSCJ | SOD-123 | Diode 30V 500mA Surface Mount SOD-123 | yes | 20 | 20 | 20 | 0.0332 | 0.66 | https://www.lcsc.com/product-detail/C77336.html | |
| 4 | C7603347 | SI1308EDL | TECH PUBLIC | SOT-323 | 30V 1.4A 360mW Surface Mount SOT-323 | yes | 5 | 5 | 5 | 0.0840 | 0.42 | https://www.lcsc.com/product-detail/C7603347.html | |
| 5 | C52923 | CL05A105KA5NQNC | Samsung Electro-Mechanics | 0402 | 1uF ±10% 25V Ceramic Capacitor X5R 0402 | yes | 100 | 100 | 100 | 0.0040 | 0.40 | https://www.lcsc.com/product-detail/C52923.html | |
| 6 | C511277 | MCP1700-3302E/TO | MICROCHIP | TO-92-3 | 3.3V Positive Fixed TO-92-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators RoHS | yes | 1 | 1 | 1 | 0.8030 | 0.80 | https://www.lcsc.com/product-detail/C511277.html | |
| 7 | C481407 | NX3225GA-12MHZ-STD-CRG-2 | NDK | SMD3225-4P | Crystal 12MHz ±20ppm 8pF 100Ω SMD3225-4P | yes | 5 | 5 | 5 | 0.2377 | 1.19 | https://www.lcsc.com/product-detail/C481407.html | |
| 8 | C47647 | PH-2P | BOOMELE(Boom Precision Elec) | SMD,P=2mm,Surface Mount,Right Angle | Connector Header 2 position 2mm Pitch Surface Mount, Right Angle | yes | 12 | 12 | 12 | 0.0614 | 0.74 | https://www.lcsc.com/product-detail/C47647.html | |
| 9 | C424093 | MCP73831T-2ACI/OT | MICROCHIP | SOT-23-5 | 3.75V~6V Lithium Battery 1 550mA SOT-23-5 Battery Chargers ICs RoHS | yes | 1 | 1 | 1 | 0.7611 | 0.76 | https://www.lcsc.com/product-detail/C424093.html | |
| 10 | C4109 | 0402WGF2001TCE | UNI-ROYAL | 0402 | 2kΩ ±1% 62.5mW 0402 Thick Film Resistor | yes | 100 | 100 | 100 | 0.0008 | 0.08 | https://www.lcsc.com/product-detail/C4109.html | |
| 11 | C410351 | TF-015 | Hanbo Electronic | SMD | Micro SD card (TF card) Connector and Ejector Push-Push Surface Mount | yes | 5 | 5 | 5 | 0.1383 | 0.69 | https://www.lcsc.com/product-detail/C410351.html | |
| 12 | C388885 | EVQPUD02K | PANASONIC | SMD,4.7x4.5mm | Tactile Switch SPST 2.2N 1.65mm J-Lead 4.7mm x 4.5mm Surface Mount, Right Angle | yes | 5 | 5 | 5 | 0.2299 | 1.15 | https://www.lcsc.com/product-detail/C388885.html | |
| 13 | C354600 | CKCS5020-47uH/M | CENKER | SMD,5x5mm | 750mA 47uH ±20% 770mA 580mΩ Magnetic Shielded Inductor SMD,5x5mm Fixed Inductors RoHS | yes | 10 | 10 | 10 | 0.0504 | 0.50 | https://www.lcsc.com/product-detail/C354600.html | |
| 14 | C347476 | AO3401A | UMW | SOT-23 | P-Channel 30V 4.2A 1.4W Surface Mount SOT-23 | yes | 20 | 20 | 20 | 0.0321 | 0.64 | https://www.lcsc.com/product-detail/C347476.html | |
| 15 | C11702 | 0402WGF1001TCE | UNI-ROYAL | 0402 | 1kΩ ±1% 62.5mW 0402 Thick Film Resistor | yes | 100 | 100 | 100 | 0.0011 | 0.11 | https://www.lcsc.com/product-detail/C11702.html | |
| 16 | C318954 | TM-2011 | XKB Connection | SMD-5P,19.7x14.8mm | SMD-5P,19.7x14.8mm Navigation Switches, Joystick RoHS | yes | 5 | 5 | 5 | 0.2672 | 1.34 | https://www.lcsc.com/product-detail/C318954.html | |
| 17 | C25905 | 0402WGF5101TCE | UNI-ROYAL | 0402 | 5.1kΩ ±1% 62.5mW 0402 Thick Film Resistor | yes | 100 | 100 | 100 | 0.0009 | 0.09 | https://www.lcsc.com/product-detail/C25905.html | |
| 18 | C25744 | 0402WGF1002TCE | UNI-ROYAL | 0402 | 10kΩ ±1% 62.5mW 0402 Thick Film Resistor | yes | 100 | 100 | 100 | 0.0013 | 0.13 | https://www.lcsc.com/product-detail/C25744.html | |
| 19 | C25100 | 0402WGF270JTCE | UNI-ROYAL | 0402 | 27Ω ±1% 62.5mW 0402 Thick Film Resistor | yes | 100 | 100 | 100 | 0.0008 | 0.08 | https://www.lcsc.com/product-detail/C25100.html | |
| 20 | C2456208 | W25Q16JVZPIQ TR | Winbond | WSON-8-EP(5x6) | 2.7V~3.6V 16Mbit 133MHz SPI WSON-8-EP(5x6) Memory (ICs) RoHS | yes | 1 | 1 | 1 | 1.2904 | 1.29 | https://www.lcsc.com/product-detail/C2456208.html | |
| 21 | C23733 | CL05A475MP5NRNC | Samsung Electro-Mechanics | 0402 | 4.7uF ±20% 10V Ceramic Capacitor X5R 0402 | yes | 50 | 50 | 50 | 0.0059 | 0.30 | https://www.lcsc.com/product-detail/C23733.html | |
| 22 | C2040 | RP2040 | Raspberry Pi | LQFN-56(7x7) | 133MHz 30 LQFN-56(7x7) Microcontrollers RoHS | yes | 1 | 1 | 1 | 0.9482 | 0.95 | https://www.lcsc.com/product-detail/C2040.html | |
| 23 | C19702 | CL10A106KP8NNNC | Samsung Electro-Mechanics | 0603 | 10uF ±10% 10V Ceramic Capacitor X5R 0603 | yes | 50 | 50 | 50 | 0.0080 | 0.40 | https://www.lcsc.com/product-detail/C19702.html | |
| 24 | C19077718 | FPC-0.5FX-24PH20 | Yuandi | SMD,P=0.5mm | FFC/FPC Connector 24 Position 0.5mm Pitch Bottom Contact | yes | 5 | 5 | 5 | 0.0927 | 0.46 | https://www.lcsc.com/product-detail/C19077718.html | |
| 25 | C165948 | TYPE-C-31-M-12 | Korean Hroparts Elec | SMD | USB-C (USB TYPE-C) Receptacle Connector 16 Position Surface Mount | yes | 5 | 5 | 5 | 0.1701 | 0.85 | https://www.lcsc.com/product-detail/C165948.html | |
| 26 | C1562 | 0402CG330J500NT | FH | 0402 | 33pF ±5% 50V Ceramic Capacitor C0G 0402 | yes | 100 | 100 | 100 | 0.0013 | 0.13 | https://www.lcsc.com/product-detail/C1562.html | |
| 27 | C1525 | CL05B104KO5NNNC | Samsung Electro-Mechanics | 0402 | 100nF ±10% 16V Ceramic Capacitor X7R 0402 | yes | 100 | 100 | 100 | 0.0013 | 0.13 | https://www.lcsc.com/product-detail/C1525.html |
Parts
66| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 1uF | Capacitor_SMD:C_0402_1005Metric | C4, C6, C7, C10, C22, C23, C24, C25, C26, C27, C28, C29, C30 |
| 10 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C5, C8, C9, C11, C12, C15, C16, C17, C18, C19 |
| 6 | 10K | Resistor_SMD:R_0402_1005Metric | R3, R4, R5, R8, R11, R13 |
| 4 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C20, C21 |
| 4 | MBR0530 | Diode_SMD:D_0402_1005Metric | D2, D3, D4, D5 |
| 3 | 1K | Resistor_SMD:R_0402_1005Metric | R6, R12, R14 |
| 3 | ~ | Button_Switch_SMD:SW-SMD_EVQPUD02K-1 | SW1, SW2, SW3 |
| 2 | 27 | Resistor_SMD:R_0402_1005Metric | R9, R10 |
| 2 | 33pF | Capacitor_SMD:C_0402_1005Metric | C13, C14 |
| 2 | 5.1K | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 12 MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 2.2 | Resistor_SMD:R_0402_1005Metric | R15 |
| 1 | 2k | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 47uH | Inductor_SMD:L_Cenker_CKCS5020 | L1 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | Battery | Connector_JST:CONN-SMD_2P-P2.00_PH2.0-SPWB | CN1 |
| 1 | LED | Capacitor_SMD:C_0402_1005Metric | D1 |
| 1 | MCP1700x-300xxTT | Package_TO_SOT_SMD:SOT-23 | U2 |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | Multi-Directional Switch | Button_Switch_SMD:SW-SMD_TM-2011 | TM-2011A1 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U3 |
| 1 | Si1308EDL | Package_TO_SOT_SMD:SOT-323_SC-70 | Q2 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | W25Q16JVZPIQ TR | Package_SON:Winbond_USON-8-1EP_3x2mm_P0.5mm_EP0.2x1.6mm | U4 |
| 1 | ~ | Connector_Card:TF-SMD_TF-015 | SD-CARD1 |
| 1 | ~ | Connector_FFC-FPC:FPC-SMD_24P-P0.50_YUANDI_FPC-0.5FX-24PH20 | U5 |
Questions
How big is the Eink PCB?
It measures 44.6 × 85.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Eink use?
66 parts, built around the RP2040, MBR0530, AO3401A and SI1308EDL. 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 Eink KiCad files?
From the dopmore/eink repository on GitHub, at the commit this page was made from: the board is PCB/eink.kicad_pcb and its schematic PCB/eink.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Eink design in my own project?
Its repository states no licence, so its author keeps all rights: ask dopmore before reusing the design.
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