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DSMU A1

DumberThanUsual·DSMU·PCB/A1 - Analogue Board/old.A1 - Analogue Board.kicad_pcb

DSMU A1 PCB layout, top view — open source STM32 board by DumberThanUsual

About the DSMU A1 PCB

DSMU A1 is an open source STM32 PCB design by DumberThanUsual, published on GitHub. It is a 2-layer board measuring 172.8 × 214.7 mm, with 272 components from 65 distinct parts.

Its main chip is the STM32F303C6Tx, from the STM32 family. Other key parts include the LP2950-3.3_TO252, ISO7341C, DG444xY, AD7190BRUZ and LM4040DBZ-2.0. By type, the board carries 105 capacitors, 75 resistors, 35 ICs, 23 test points, 11 diodes and 10 connectors.

From the project

Dumb Source Measure Unit - In Progress

Main components on the DSMU A1

LP2950-3.3_TO252ISO7341CSTM32F303C6TxDG444xYAD7190BRUZLM4040DBZ-2.0ADR4520OPA2182OPA140DACx0504LM393TLP170DLM7171xINTLP175ATL07174HC138

DSMU A1 bill of materials (BOM)

272 components, 65 distinct parts.

QtyPartRefs
1
LP2950-3.3_TO252
U1
1
ISO7341C
U2
1
STM32F303C6Tx
U3
6
DG444xY
U4, U11, U16, U22, U23, U29
1
AD7190BRUZ
U5
1
LM4040DBZ-2.0
U6
1
ADR4520
U7
9
OPA2182
U8, U10, U13, U14, U15, U18, U24, U30 +1
4
OPA140
U9, U25, U31, U32
1
DACx0504
U12
2
LM393
U17, U28
2
TLP170D
U19, U34
1
LM7171xIN
U20
1
TLP175A
U21
1
TL071
U26
2
74HC138
U27, U35
2
BC847
Q1, Q2
4
DMN6075S
Q3, Q4, Q5, Q6
1
8MHz
Y1
1
Conn_01x06_Socket
J1
Show 45 more
QtyPartRefs
6
Conn_01x01_Socket
J2, J3, J4, J5, J6, J7
1
Conn_01x06_Pin
J8
1
Conn_01x04_Pin
J9
1
Conn_01x03_Pin
J10
2
EC2-5NU
K1, K2
1
SW_Push
SW1
23
TestPoint
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +15
4
BAV99
D1, D2, D3, D4
5
BAV199
D5, D8, D9, D10, D11
2
BZX84C10
D6, D7
3
FerriteBead_Small
FB1, FB2, FB3
7
270p
C1, C2, C69, C73, C74, C75, C76
8
100u
C3, C5, C10, C12, C16, C17, C18, C19
1
1u
C4
64
100n
C6, C7, C8, C9, C11, C15, C21, C22 +56
2
18p
C13, C14
7
10u
C20, C24, C31, C33, C36, C41, C43
8
1n
C25, C26, C29, C30, C46, C50, C51, C68
6
15p
C61, C62, C63, C94, C102, C103
2
22p
C70, C90
17
2.2k
R1, R2, R3, R5, R11, R12, R13, R15 +9
2
33
R4, R6
2
100k
R7, R8
14
10k
R9, R10, R24, R25, R28, R48, R50, R51 +6
1
500M
R14
3
20k
R18, R19, R20
2
4.7k
R21, R57
2
470
R22, R23
1
1.5k
R29
1
10k
R31
1
150k
R32
1
1k
R33
4
374m
R35, R36, R44, R45
4
37.4
R37, R38, R46, R47
1
374
R39
1
3.74k
R40
1
37.4k
R41
1
422k
R42
1
3.74M
R43
1
32.4k
R60
1
390k
R61
1
22k
R63
10
10k
RN1, RN2, RN3, RN4, RN5, RN6, RN7, RN8 +2
1
10k
RN10
1
100k
RN11

DSMU A1 design files

The KiCad project lives in the DumberThanUsual/DSMU repository on GitHub; these links point at the commit this page was built from.

DSMU A1: common questions

What microcontroller does the DSMU A1 use?

The DSMU A1 is built around the STM32F303C6Tx, from the STM32 family.

How big is the DSMU A1 PCB?

The DSMU A1 measures 172.8 × 214.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the DSMU A1?

272 components, from 65 distinct parts. The full bill of materials is listed on this page.

Where can I download the DSMU A1 design files?

From the DumberThanUsual/DSMU repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the DSMU A1 design in my own project?

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

Can I test firmware for the DSMU A1 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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