HardLabs

Transmitter

rjacoby00·devel·hardware/senior_project/Transmitter/Transmitter.kicad_pcb

Transmitter PCB layout, top view — open source STM32 board by rjacoby00

About the Transmitter PCB

Transmitter is an open source STM32 PCB design by rjacoby00, published on GitHub. It is a 4-layer board measuring 44.6 × 31.8 mm, with 37 components from 26 distinct parts.

Its main chip is the STM32L010K4T6, from the STM32 family. Other key parts include the RFM69HCW, C5446 and AHT20. By type, the board carries 12 capacitors, 9 resistors, 7 connectors, 4 ICs, 2 crystals and 1 transistor.

It belongs with the sensors designs in this gallery.

From the project

Repository for code experiments and smaller projects.

This is the circuit and PCB design for my Senior Research Project. My project was to research the future economic impacts of the Internet of Things on manufacturing and to design a simple IoT board. This is a small temperature sensor board that transmits it's data over LoRa. The board is untested as the parts I orignally designed it for were out of stock by the time it was complete due to the global chip shortage in 2021. The firmware is mostly just the template files generated for my hardware configuration by STM32CubeIDE. I've stripped out most of the project files from that with a…

Main components on the Transmitter

RFM69HCWC5446STM32L010K4T6AHT20

Transmitter bill of materials (BOM)

37 components, 26 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RFM69HCW
U1
1
C5446
XC6206P332MR
U2
1
STM32L010K4T6
U3
1
AHT20
U4
1
C15127
AO3401A
Q1
1
C88374
UFL_SMA
X1
1
C32346
32.768k
Y1
1
Conn_01x01_Male
J1
1
Bat
J2
1
UART
J3
1
SWD
J4
1
I2C
J5
1
SPI
J6
1
GPIO
J7
1
C2293
Blue
D1
1
C86063
39n
L1
3
C15525
10u
C1, C10, C12
2
C1547
12p
C2, C3
2
C28323
1u
C4, C7
1
C15849
1u
C5
Show 6 more
QtyPartRefs
1
C57112
10n
C6
3
C1525
100n
C8, C9, C11
2
C25741
100K
R1, R2
3
C25744
10k
R3, R5, R9
1
C22843
1k5
R4
3
C25092
22
R6, R7, R8

Transmitter design files

The KiCad project lives in the rjacoby00/devel repository on GitHub; these links point at the commit this page was built from.

Transmitter: common questions

What microcontroller does the Transmitter use?

The Transmitter is built around the STM32L010K4T6, from the STM32 family.

How big is the Transmitter PCB?

The Transmitter measures 44.6 × 31.8 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Transmitter?

37 components, from 26 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Transmitter design files?

From the rjacoby00/devel repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Transmitter design in my own project?

The repository has no license, so all rights stay with rjacoby00. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Transmitter 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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