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Wearable e ink

Just4Stan·wearable-e-ink

Wearable e ink PCB layout, top view — open source ESP8266 board by Just4Stan

About the Wearable e ink PCB

Wearable e ink is an open source ESP8266 PCB design by Just4Stan, published on GitHub. It is a 4-layer board measuring 50.1 × 32.6 mm, with 41 components from 19 distinct parts.

Its main chip is the ESP-12F(ESP8266MOD), from the ESP8266 family. Other key parts include the 4*4*1_7, CH340C_USB, N-MOS, TYPE-C and LDO. By type, the board carries 14 capacitors, 12 resistors, 10 ICs, 3 diodes, 1 LED and 1 inductor.

It belongs with the displays & leds, wearables and iot & wireless designs in this gallery.

From the project

Hand-solderable, simple e-ink carrier board for teaching simple electronics, pcb design and soldering

Initial designed to give workshops at HighTechLab in Leuven

OnShape: https://cad.onshape.com/documents/da012de4a02ab2054a0e627e/w/e4c4a902931b74520d1464dc/e/3234466a68d54d344f0d976d?renderMode=0&uiState=68dfa4af8854ede9226c917d

Wearable e ink, from the project README
From the project README

Main components on the Wearable e ink

4*4*1_7CH340C_USBN-MOSESP-12F(ESP8266MOD)TYPE-CLDONPN05A20H24P

Wearable e ink bill of materials (BOM)

41 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
4*4*1_7
U1, U8
1
CH340C_USB
U3
1
N-MOS
U4
1
ESP-12F(ESP8266MOD)
U5
1
TYPE-C
U6
1
LDO
U7
2
NPN
U9, U10
1
05A20H24P
U11
1
RED LED
LED1
3
shottky
D1, D2, D3
1
47UF
47uF
L2
2
10UF
10uF
C4, C7
3
100NF
100nF
C5, C6, C8
7
1UF
1uF
C9, C10, C11, C12, C13, C14, C18
2
4.7UF
4.7uF
C16, C17
1
1MR
R3
7
5.1K
5.1k
R4, R5, R6, R7, R8, R9, R13
3
220OHM
220Ohm
R10, R11, R12
1
2.2R
R14

Wearable e ink design files

The KiCad project lives in the Just4Stan/wearable-e-ink repository on GitHub; these links point at the commit this page was built from.

Wearable e ink: common questions

What microcontroller does the Wearable e ink use?

The Wearable e ink is built around the ESP-12F(ESP8266MOD), from the ESP8266 family.

How big is the Wearable e ink PCB?

The Wearable e ink measures 50.1 × 32.6 mm, has 4 copper layers and is 1.2 mm thick.

How many components are on the Wearable e ink?

41 components, from 19 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 Wearable e ink design files?

From the Just4Stan/wearable-e-ink 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 Wearable e ink design in my own project?

The repository has no license, so all rights stay with Just4Stan. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Wearable e ink without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.

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