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STM32 RFM95 proto board

tomtor·STM32-RFM95-PCB

STM32 RFM95 proto board layout, top view — open source STM32 board by tomtor
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About the STM32 RFM95 proto board

STM32 RFM95 proto board is an open source STM32 PCB design by tomtor, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 59.4 × 54.6 mm, with 23 components from 16 distinct parts.

Its main chip is the stm32f103c8t6-module-china, from the STM32 family. Other key parts include the RFM95HW. By type, the board carries 16 connectors, 2 ICs, 2 capacitors, 2 resistors and 1 diode.

It belongs with the rf & radio, iot & wireless and power & battery designs in this gallery.

From the project

STM32 and AVR128 Printed Circuit Board for creating IOT nodes with the RFM95 LORA chip

See: - https://www.thethingsnetwork.org/forum/t/avr128db28-pcb-with-rfm95/50864 - https://www.thethingsnetwork.org/labs/story/a-cheap-stm32-arduino-node

for background and old software samples.

This repository now has tested LMIC (https://github.com/tomtor/STM32-RFM95-PCB/tree/master/AVR128DBLora) and RadioLib (https://github.com/tomtor/STM32-RFM95-PCB/tree/master/AVR128_RadioLib) Arduino code for the AVR128DB board with the RFM95W.

STM32 RFM95 proto board, from the project README
From the project README

Main components on the STM32 RFM95 proto board

stm32f103c8t6-module-chinaRFM95HW

STM32 RFM95 proto board bill of materials (BOM)

23 components, 16 distinct parts.

QtyPartRefs
1
stm32f103c8t6-module-china
U1
1
RFM95HW
U2
1
Batt
J1
1
Solar
J2
1
CONN_01X17
J3
3
CONN_01X03
J4, J5, J15
2
CONN_01X01
J6, J16
1
CONN_01X14
J7
2
CONN_01X05
J8, J9
1
CONN_02X07
J10
1
CONN_02X09
J11
3
CONN_01X02
J12, J13, J14
1
BAT85
D1
1
100µ
C1
1
100n
C2
2
100k
R1, R2

STM32 RFM95 proto board design files

The KiCad project lives in the tomtor/STM32-RFM95-PCB repository on GitHub; these links point at the commit this page was built from.

STM32 RFM95 proto board: common questions

What microcontroller does the STM32 RFM95 proto board use?

The STM32 RFM95 proto board is built around the stm32f103c8t6-module-china, from the STM32 family.

How big is the STM32 RFM95 proto board?

The STM32 RFM95 proto board measures 59.4 × 54.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the STM32 RFM95 proto board?

23 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the STM32 RFM95 proto board design files?

From the tomtor/STM32-RFM95-PCB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the STM32 RFM95 proto board design in my own project?

Yes, under the terms of its GPL-3.0 license, which tomtor chose for the repository.

Can I test firmware for the STM32 RFM95 proto board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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