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C3-27-epaper touch

martinberlin·H-spi-adapters·C3-27-epaper-touch/C3-27-epaper-touch.kicad_pcb

C3-27-epaper touch PCB layout, top view — open source ESP32 board by martinberlin

About the C3-27-epaper touch PCB

C3-27-epaper touch is an open source ESP32 PCB design by martinberlin, published on GitHub under the CERN-OHL-W-2.0 license. It is a 2-layer board measuring 65.4 × 71 mm, with 46 components from 28 distinct parts.

Its main chip is the C2934560, from the ESP32 family. Other key parts include the C969151, C39051 and C107410. By type, the board carries 18 capacitors, 12 resistors, 4 ICs, 4 diodes, 3 transistors and 3 connectors.

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

From the project

PCB design for SPI adapters (HATs)

In this repository we will keep PCB designs done in KiCAD for SPI adapters we use. This PCB hardware work uses the CERN Open Hardware Licence Version 2 in the weakly reciprocal version. Be aware that this is experimental work mostly done for research and mass-producing this PCB's is not permitted without our written consent. Fabricating and selling hardware also implies that you need to provide support / fixes and maintain your code examples up to date.

C3-27-epaper touch, from the project README
From the project README

Main components on the C3-27-epaper touch

C2934560C969151C39051C107410

C3-27-epaper touch bill of materials (BOM)

46 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C2934560
ESP32-C3-WROOM-02-N4
U1
1
C969151
CP2102N-Axx-xQFN24
U2
1
C39051
MCP1700-3302E_SOT23
U3
1
C107410
DS3231MZ
U4
1
C469327
Si1308
Q1
2
C146798
BC817
Q2, Q3
1
C262292
AFC24-S24FIC-00
J1
1
C165948
USB_C_Programming
J2
1
C224194
Conn_01x06_Female
J4
1
C2911519
RESE
JP1
3
C77336
MBR0530
D1, D2, D3
1
C191023
1N5819WS
D4
1
C38117
10uH
L1
6
C1779
4.7uF
C1, C2, C3, C7, C9, C10
4
C28323
1uF
C4, C5, C6, C8
1
C1779
4.7uF 50V
C11
1
C19666
4.7uF
C12
1
C28233
100 nF
C13
2
C15850
10uF
C14, C15
1
C129289
C_Polarized 100uF
C16
Show 8 more
QtyPartRefs
2
C122252
220uF
C17, C18
1
C25804
10K
R1
4
C25804
10 K
R2, R4, R5, R12
1
C25237
3R
R3
2
C23186
5.1K
R6, R7
2
C23162
4.7K
R8, R9
1
C22980
3.6K
R10
1
C103895
0.47R
R11

C3-27-epaper touch design files

The KiCad project lives in the martinberlin/H-spi-adapters repository on GitHub; these links point at the commit this page was built from.

C3-27-epaper touch: common questions

What microcontroller does the C3-27-epaper touch use?

The C3-27-epaper touch is built around the C2934560, from the ESP32 family.

How big is the C3-27-epaper touch PCB?

The C3-27-epaper touch measures 65.4 × 71 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the C3-27-epaper touch?

46 components, from 28 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 C3-27-epaper touch design files?

From the martinberlin/H-spi-adapters 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 C3-27-epaper touch design in my own project?

Yes, under the terms of its CERN-OHL-W-2.0 license, which martinberlin chose for the repository.

Can I test firmware for the C3-27-epaper touch 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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