HardLabs

H-C3-029-eink

martinberlin·H-C3-029-eink·H-C3-2.9/H-C3-ulp29.kicad_pcb

H-C3-029-eink PCB layout, top view — open source Nordic nRF board by martinberlin

About the H-C3-029-eink PCB

H-C3-029-eink is an open source Nordic nRF PCB design by martinberlin, published on GitHub under the MIT license. It is a 4-layer board measuring 83.4 × 42.1 mm, with 51 components from 31 distinct parts.

Its main chip is the E73-2G4M08S1C, from the Nordic nRF family. Other key parts include the MCP1700-3302E_SOT23. By type, the board carries 18 capacitors, 14 resistors, 5 connectors, 5 diodes, 2 ICs and 2 transistors.

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

From the project

This is a joint project between Larry Bank and Fasani Corp with the purpouse to make an easy and unexpensive nRF52 BLE badge with a SPI 2.9", a QWIIC connector, and on board RTC

This PCB design is based on this nRF52 module datasheet

The most important goals that this PCB achieves:

- Very low power consumption. In factors of 2 digits micro-amperes (uA) per minute - Simple user interface with a multi-directional switch (up, down, select) - All open source, including the BLE sending program (MacOS /iOS) - Very simple design and schematics - QWIIC connector so can support external I2C sensors (Consumption limit: 200mA, limited by LDO MCP1700-330)

H-C3-029-eink, from the project README
From the project README

Main components on the H-C3-029-eink

E73-2G4M08S1CMCP1700-3302E_SOT23

H-C3-029-eink bill of materials (BOM)

51 components, 31 distinct parts.

QtyPartRefs
1
E73-2G4M08S1C
U1
1
MCP1700-3302E_SOT23
U2
1
Si1308
Q1
1
Si2301CDS
Q2
1
RTC_Crystal_32MHz
Y2
1
HX JN1.27-2X5 TP H4.9
CN1
1
USB_C_Receptacle_USB2.0
J1
1
AFC24-S24FIC-00
J2
1
Conn_01x07
J3
1
SM04B-SRSS-TB(LF)(SN)
SM04B-SRSS-TB_LF__SN_
J4
1
Battery_Cell
BT1
1
TM-2023
SW1
1
K2-1806SQ-A2DW-04
SW3
3
MBR0530
D1, D2, D3
1
LED
D4
1
1N5817
D5
1
10uH
L3
2
10uF
C1, C2
2
15pF
C3, C4
1
100nF
C5
Show 11 more
QtyPartRefs
6
4.7uF
C6, C7, C11, C13, C14, C15
4
1uF
C8, C9, C10, C12
1
4.7uF 50V
C16
1
4.7uF
C17
1
C_Pol 100uF
C18
4
5.1k
R1, R14, R15, R20
2
1k
R2, R4
4
10k
R3, R7, R10, R21
1
3.3k
R5
2
470k
R6, R9
1
0.47R
R8

H-C3-029-eink design files

The KiCad project lives in the martinberlin/H-C3-029-eink repository on GitHub; these links point at the commit this page was built from.

H-C3-029-eink: common questions

What microcontroller does the H-C3-029-eink use?

The H-C3-029-eink is built around the E73-2G4M08S1C, from the Nordic nRF family.

How big is the H-C3-029-eink PCB?

The H-C3-029-eink measures 83.4 × 42.1 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the H-C3-029-eink?

51 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the H-C3-029-eink design files?

From the martinberlin/H-C3-029-eink repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the H-C3-029-eink design in my own project?

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

Can I test firmware for the H-C3-029-eink without the hardware?

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

Similar boards