HardLabs

Tpms silencer

gcormier·tpms_silencer·PCB/tpms_silencer.kicad_pcb

Tpms silencer PCB layout, top view — open source AVR/Arduino board by gcormier

About the Tpms silencer PCB

Tpms silencer is an open source AVR/Arduino PCB design by gcormier, published on GitHub. It is a 2-layer board measuring 33 × 51.6 mm, with 27 components from 24 distinct parts.

Its main chip is the ATtiny841-SS, from the AVR/Arduino family. Other key parts include the MICRF112YMM. By type, the board carries 13 capacitors, 3 resistors, 2 ICs, 2 crystals, 2 connectors and 2 inductors.

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

From the project

Spoof TPMS sensors to prevent blinking lights/etc

Big thanks to rtl_433 project, wouldn't exist without their hard work for decoding the TPMS in the first place.

Tpms silencer, from the project README
From the project README

Main components on the Tpms silencer

ATtiny841-SSMICRF112YMM

Tpms silencer bill of materials (BOM)

27 components, 24 distinct parts.

QtyPartRefs
1
ATtiny841-SS
U1
1
MICRF112YMM
U2
1
9.84375MHz
Y1
1
8MHz
Y2
1
AVR-ISP-6
J1
1
TEST
J2
1
ANTENNA
AE1
1
CR2032
BT1
1
SW_SPST
SW1
1
470nH
L1
1
150nH
L2
1
10uF 6.3V
C1
1
100pF 50V
C2
1
0.1uF
C3
2
22pF
C4, C6
1
8.2pF 50V
C5
1
4.7pF
C7
2
8pF
C8, C9
1
0.1uF 50V
C10
1
2.2pF
C11
Show 4 more
QtyPartRefs
1
4.7uF 50V
C12
1
10pF
C13
2
100k
R1, R2
1
0
R7

Tpms silencer design files

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

Tpms silencer: common questions

What microcontroller does the Tpms silencer use?

The Tpms silencer is built around the ATtiny841-SS, from the AVR/Arduino family.

How big is the Tpms silencer PCB?

The Tpms silencer measures 33 × 51.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Tpms silencer?

27 components, from 24 distinct parts. The full bill of materials is listed on this page.

Where can I download the Tpms silencer design files?

From the gcormier/tpms_silencer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Tpms silencer design in my own project?

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

Can I test firmware for the Tpms silencer without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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