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Simple sdr

pd0wm·simple-sdr·pcb/sdr.kicad_pcb

Simple sdr PCB layout, top view — open source STM32 board by pd0wm
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About the Simple sdr PCB

Simple sdr is an open source STM32 PCB design by pd0wm, published on GitHub under the MIT license. It is a 2-layer board measuring 79.8 × 23.9 mm, with 49 components from 28 distinct parts.

Its main chip is the STM32F042G4Ux, from the STM32 family. Other key parts include the LT6231, SN74CBT3253 and NCP1117-3.3_SOT223. By type, the board carries 21 capacitors, 14 resistors, 4 ICs, 4 connectors, 2 switches and 2 diodes.

It belongs with the rf & radio designs in this gallery.

From the project

Software Defined Radio for MF bands using STM32F042

WARNING: So far I haven't been able to receive anything yet with this hardware. Please use at your own risk.

Simple sdr, from the project README
From the project README

Main components on the Simple sdr

LT6231SN74CBT3253NCP1117-3.3_SOT223STM32F042G4Ux

Simple sdr bill of materials (BOM)

49 components, 28 distinct parts.

QtyPartRefs
1
LT6231
U1
1
SN74CBT3253
U2
1
NCP1117-3.3_SOT223
U3
1
STM32F042G4Ux
U4
1
Conn_01x03_Male
J1
1
Conn_Coaxial
J2
1
Conn_01x02_Male
J3
1
USB_B_Mini
J4
1
RST
SW1
1
DFU
SW2
1
6.8u
T1
1
RED
D1
1
GREEN
D2
1
3.9u
L1
8
100n
C1, C2, C4, C5, C8, C16, C17, C18
4
4.7u
C3, C19, C20, C21
2
390p
C6, C7
2
10n
C9, C13
2
47n
C10, C11
1
5.6n
C12
Show 8 more
QtyPartRefs
2
10u
C14, C15
2
1k
R1, R2
2
100
R3, R6
2
4.99k
R4, R5
2
49.9
R7, R8
2
10
R9, R10
2
10k
R11, R14
2
140
R12, R13

Simple sdr design files

The KiCad project lives in the pd0wm/simple-sdr repository on GitHub; these links point at the commit this page was built from.

Simple sdr: common questions

What microcontroller does the Simple sdr use?

The Simple sdr is built around the STM32F042G4Ux, from the STM32 family.

How big is the Simple sdr PCB?

The Simple sdr measures 79.8 × 23.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Simple sdr?

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

Where can I download the Simple sdr design files?

From the pd0wm/simple-sdr repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Simple sdr design in my own project?

Yes, under the terms of its MIT license, which pd0wm chose for the repository.

Can I test firmware for the Simple sdr 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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