HardLabs

RJX-Embedded-Training-Kit

MUDAL·RJX-Embedded-Training-Kit·rjx_training_kit/Hardware/rjx_training_kit.kicad_pcb

RJX-Embedded-Training-Kit PCB layout, top view — open source STM32 board by MUDAL

About the RJX-Embedded-Training-Kit PCB

RJX-Embedded-Training-Kit is an open source STM32 PCB design by MUDAL, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 69.7 × 70.9 mm, with 103 components from 42 distinct parts.

Its main chip is the STM32L431RCTx, from the STM32 family. Other key parts include the TLV76133DCY, LD39200DPUR, BQ24072RGT, LIS3DH and BQ27441-G1. By type, the board carries 41 resistors, 25 capacitors, 9 ICs, 8 connectors, 5 transistors and 5 diodes.

It belongs with the power & battery, displays & leds and sensors designs in this gallery.

From the project

Custom 4-layer PCB project by Olaoluwa Raji built around an STM32L4 MCU, Li-ion battery charger, power management, TI battery fuel gauge IC, sensors, CAN bus, and displays.

Hardware training platform built around STM32L431 with: - 5 V input and dual 3.3 V rails (digital +3V3 and analog +3V3A) - Li-ion charger/power-path + fuel gauge - Sensors (I2C/SMBus + SPI), UI peripherals (LCD/7-seg/buzzer), and CAN

This repository contains the complete KiCad 9 hardware design, PDFs/datasheets, and the STM32CubeMX pinout file. I have ensured that it is properly version-controlled by removing unnecessary KiCad artefacts/tool-specific outputs which can easily be re-generated by any user, and ensuring transition from the schematic design to PCB design and vice-versa without…

RJX-Embedded-Training-Kit, from the project README
From the project README

Main components on the RJX-Embedded-Training-Kit

TLV76133DCYLD39200DPURBQ24072RGTLIS3DHBQ27441-G1KCSA02-136TMP1075DGKMCP2562-E-SNSTM32L431RCTx

RJX-Embedded-Training-Kit bill of materials (BOM)

103 components, 42 distinct parts.

QtyPartRefs
1
TLV76133DCY
U1
1
LD39200DPUR
U2
1
BQ24072RGT
U3
1
LIS3DH
U4
1
BQ27441-G1
U5
1
KCSA02-136
U6
1
TMP1075DGK
U7
1
MCP2562-E-SN
U8
1
STM32L431RCTx
U9
4
BC817
Q1, Q2, Q3, Q5
1
BC808
Q4
1
8MHz
Y1
1
Barrel_Jack_Switch
J1
2
Conn_01x32_Pin
J2, J3
2
LiPo_4.2V
J4, J5
1
CHG_OUT
J6
2
CAN_Bus
J7, J8
1
5V_Buzzer
BZ1
1
WC1602A
DS1
4
Jumper_2_Open
JP1, JP2, JP3, JP4
Show 22 more
QtyPartRefs
1
10k
RV1
2
SW_Push
SW1, SW2
1
Red
D1
2
Green
D2, D5
1
Yellow
D3
1
Orange
D4
4
1uF
C1, C5, C6, C25
1
2.2uF
C2
3
10uF
C3, C4, C10
3
4.7uF
C7, C8, C18
11
100nF
C9, C12, C13, C14, C15, C19, C20, C21 +3
1
0.47uF
C11
2
10pF
C16, C17
8
10k
R1, R5, R11, R12, R29, R31, R34, R41
11
1.5k
R2, R3, R7, R8, R9, R15, R16, R30 +3
2
56k
R4, R6
1
1.8M
R10
1
10m
R13
12
300
R14, R17, R19, R21, R22, R23, R24, R25 +4
1
33
R18
4
4.7k
R20, R38, R39, R40
1
120
R36

RJX-Embedded-Training-Kit design files

The KiCad project lives in the MUDAL/RJX-Embedded-Training-Kit repository on GitHub; these links point at the commit this page was built from.

RJX-Embedded-Training-Kit: common questions

What microcontroller does the RJX-Embedded-Training-Kit use?

The RJX-Embedded-Training-Kit is built around the STM32L431RCTx, from the STM32 family.

How big is the RJX-Embedded-Training-Kit PCB?

The RJX-Embedded-Training-Kit measures 69.7 × 70.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RJX-Embedded-Training-Kit?

103 components, from 42 distinct parts. The full bill of materials is listed on this page.

Where can I download the RJX-Embedded-Training-Kit design files?

From the MUDAL/RJX-Embedded-Training-Kit repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the RJX-Embedded-Training-Kit design in my own project?

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

Can I test firmware for the RJX-Embedded-Training-Kit 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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