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Control board

Sergio5714·experimental-teg-testbed-firmware·hardware/control board/Control board.kicad_pcb

Control board layout, top view — open source STM32 board by Sergio5714

About the Control board

Control board is an open source STM32 PCB design by Sergio5714, published on GitHub. It is a 2-layer board measuring 155 × 140 mm, with 85 components from 28 distinct parts.

Its main chip is the STM32F4_Discovery_Header, from the STM32 family. Other key parts include the PCA9548, LMC7101, AD7705 and ADR441. By type, the board carries 31 resistors, 24 connectors, 13 capacitors, 6 transistors, 5 ICs and 1 crystal.

It belongs with the sensors designs in this gallery.

From the project

Firmware for STM32 MCU of testbed data acquisition and control system

This repository contains embedded software and the PCBs for the experimental testbed.

The main function of the testbed: * Imitate heat exchange, thermoelectric and electric proceses in the wearable thermoelectric generator.

Testbed's subsystems enable: Low speed (>= 5 Hz) temperature measurements with an accuracy better than 0.15°K; Temperature difference stabilization (temperature swing = 1 mv) in a range of approximately 0 - 100 mV; * Real time data visialization.

Control board, from the project README
From the project README

Main components on the Control board

PCA9548LMC7101AD7705ADR441

Control board bill of materials (BOM)

85 components, 28 distinct parts.

QtyPartRefs
1
PCA9548
U1
2
LMC7101
U2, U3
1
AD7705
U4
1
ADR441
U5
2
IRFML8244
Q1, Q2
4
IRF530N
Q3, Q4, Q5, Q6
1
Crystal
Y1
1
STM32F4_Discovery_Header
J1
4
TEST_1P
J2, J3, J4, J5
8
CWF-4
P1, P2, P3, P4, P5, P6, P7, P8
9
CWF-2
P9, P10, P11, P12, P14, P15, P16, P18 +1
1
Power_terminal
P13
1
CWF-4
P17
2
10
RV4, RV5
3
LM317A
VR1, VR2, VR3
3
0.1 µF
C1, C3, C5
3
1 µF
C2, C4, C6
3
0.15 µF
C7, C8, C9
2
30pF
C10, C11
2
0.1μF
C12, C13
Show 8 more
QtyPartRefs
8
10k
R1, R3, R5, R6, R7, R8, R13, R14
11
1k
R2, R4, R9, R10, R22, R23, R24, R25 +3
4
100k
R11, R12, R15, R16
2
1
R17, R18
3
240
R19, R20, R21
1
720
R29
1
390
R30
1
1.5k
R31

Control board design files

The KiCad project lives in the Sergio5714/experimental-teg-testbed-firmware repository on GitHub; these links point at the commit this page was built from.

Control board: common questions

What microcontroller does the Control board use?

The Control board is built around the STM32F4_Discovery_Header, from the STM32 family.

How big is the Control board?

The Control board measures 155 × 140 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Control board?

85 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the Control board design files?

From the Sergio5714/experimental-teg-testbed-firmware repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Control board design in my own project?

The repository has no license, so all rights stay with Sergio5714. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Control 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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