HardLabs

InkCard

Irony95·InkCard·einkScreen_PCB/einkScreen.kicad_pcb

InkCard PCB layout, top view — open source ESP32 board by Irony95

About the InkCard PCB

InkCard is an open source ESP32 PCB design by Irony95, published on GitHub under the MIT license. It is a 2-layer board measuring 62.4 × 113.8 mm, with 84 components from 40 distinct parts.

Its main chip is the ESP32-C6-WROOM-1-N8, from the ESP32 family. Other key parts include the BQ51013BRHLR and XC6220B331MR. By type, the board carries 34 capacitors, 23 resistors, 8 diodes, 5 transistors, 4 switches and 3 ICs.

It belongs with the displays & leds designs in this gallery.

From the project

An e-ink display that mirrors your phone/device

The project is made to be as cheap as possible, coming to a total cost of around $35USD for materials. This would be even lower if made/bought in bulk!

As this is a prototype and in heavy development, I would not recommend making this unless you're willing to tinker/is familiar with electronics and or app dev. Nevertheless, If you do want to make the project you are free to do so! I am open to answering any questions should you make the card. I am also open to the idea of making and selling the hardware itself, though this comes down to if there is interest in the project and when I feel the…

InkCard, from the project README
From the project README

Main components on the InkCard

BQ51013BRHLRXC6220B331MRESP32-C6-WROOM-1-N8

InkCard bill of materials (BOM)

84 components, 40 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BQ51013BRHLR
TI(德州仪器)
U1
1
XC6220B331MR
U2
1
ESP32-C6-WROOM-1-N8
ESPRESSIF(乐鑫)
U3
1
A03400
Q1
3
A03401
Q2, Q4, Q5
1
S8050
Q3
1
FH34SRJ-24S-0.5SH_50_
J3
1
UART
J4
1
5VPWR
J5
1
JumperEN
JP2
1
JumperBOOT
JP4
2
SW_Push
SW1, SW2
2
SW_Push
SW3, SW4
1
TYPE-C 16PIN 2MD(073)
TYPE-C 16PIN 2MD
SHOU HAN(首韩)
USB1
3
MBR0530
D1, D2, D3
1
LED
D4
1
1N5819
D5
3
ESD9B5.0ST5G
D6, D7, D8
1
10UH
10uH
L1
7
100NF
100nF
C1, C16, C17, C18, C29, C31, C33
Show 20 more
QtyPartRefs
11
1UF
1uF
C2, C3, C4, C5, C6, C7, C8, C9 +3
3
4.7UF
4.7uF
C12, C13, C27
4
10UF
10uF
C14, C19, C28, C30
1
2.2NF
2.2nF
C15
2
10NF
10nF
C21, C22
2
470NF
470nF
C23, C24
3
22NF
22nF
C25, C26, C34
1
33NF
33nF
C32
1
NC/0.47R
R1
1
C17660
3R
R2
10
10K
R3, R5, R10, R11, R12, R15, R19, R20 +2
1
47K
R4
2
NC
R6, R23
2
5.1K
R7, R9
1
100K
R8
1
200
R16
1
20K
R17
1
560R
R18
1
330R
R21
1
C17477
0R
R22

InkCard design files

The KiCad project lives in the Irony95/InkCard repository on GitHub; these links point at the commit this page was built from.

InkCard: common questions

What microcontroller does the InkCard use?

The InkCard is built around the ESP32-C6-WROOM-1-N8, from the ESP32 family.

How big is the InkCard PCB?

The InkCard measures 62.4 × 113.8 mm, has 2 copper layers and is 1 mm thick.

How many components are on the InkCard?

84 components, from 40 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 InkCard design files?

From the Irony95/InkCard 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 InkCard design in my own project?

Yes, under the terms of its MIT license, which Irony95 chose for the repository.

Can I test firmware for the InkCard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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