4 layers48.9 × 59.7 mm
2 layers33 × 51.6 mm
Tpms silencer
gcormier/tpms_silencer20Spoof TPMS sensors to prevent blinking lights/etc
- Size
- 33 × 51.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 27
- Nets
- 19
- Pads
- 85
- Tracks, vias
- 164, 27
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 12 Nov 2018
- Updated
- 24 Nov 2021
Overview
Tpms silencer is an open-source printed circuit board by gcormier, from the gcormier/tpms_silencer repository on GitHub. It is a 2-layer board of 33 × 51.6 mm with 27 parts on 19 nets, routed with 164 tracks and 27 vias.
It is built around the ATTINY841-SSU, MICRF112YMM and CR2032. Its parts include 13 capacitors, 3 resistors, 2 ICs, 2 connectors and 2 inductors. It belongs with the radio and wireless boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATTINY841-SSU
SOIC-14-40℃~+85℃ 1.7V~5.5V 10bit 12 16MHz 512Byte 512Byte 8 Bit 8KB AVR Built-in FLASH SOIC-14 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MICRF112YMM
MSOP-10-40℃~+125℃ 1.8V~3.6V 10dBm 11mA 300MHz~450MHz 50Kbps RKE Transmitter MSOP-10 RF Transceiver ICs ROHSMicrochip TechnologyRF Transceiver ICs
CR2032
-- Unclassified goods ROHSMaxellUncategorised
README
readme.md
tpms_silencer
Open hardware that supports ASK/FSK transmit on 315/433MHz ISM bands. General point is to spoof TPMS sensors but it could be used for any type of ASK/FSK transmittion on bands supported by the IC.
Big thanks to rtl_433 project, wouldn't exist without their hard work for decoding the TPMS in the first place.
Availability
Boards are for sale https://www.tindie.com/products/gcormier/tpms-silencer/
Parts
27| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100k | Resistor_SMD:R_0805_2012Metric | R1, R2 |
| 2 | 22pF | Capacitor_SMD:C_0805_2012Metric | C4, C6 |
| 2 | 8pF | Capacitor_SMD:C_0805_2012Metric | C8, C9 |
| 1 | 0 | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 0.1uF 50V | Capacitor_SMD:C_0805_2012Metric | C10 |
| 1 | 100pF 50V | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 10pF | Capacitor_SMD:C_0805_2012Metric | C13 |
| 1 | 10uF 6.3V | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 150nH | Inductor_SMD:L_0805_2012Metric | L2 |
| 1 | 2.2pF | Capacitor_SMD:C_0805_2012Metric | C11 |
| 1 | 4.7pF | Capacitor_SMD:C_0805_2012Metric | C7 |
| 1 | 4.7uF 50V | Capacitor_SMD:C_0805_2012Metric | C12 |
| 1 | 470nH | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | 8.2pF 50V | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | 8MHz | Crystal:Crystal_SMD_TXC_7A-2Pin_5x3.2mm | Y2 |
| 1 | 9.84375MHz | Crystal:Crystal_SMD_HC49-SD | Y1 |
| 1 | ANTENNA | !Custom:315MHz Antenna | AE1 |
| 1 | ATtiny841-SS | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1 |
| 1 | AVR-ISP-6 | !Custom:AVR-SMD-Programming-Header | J1 |
| 1 | CR2032 | Battery:BatteryHolder_Keystone_3034_1x20mm | BT1 |
| 1 | MICRF112YMM | Package_SO:MSOP-10_3x3mm_P0.5mm | U2 |
| 1 | SW_SPST | Button_Switch_SMD:SW_SPST_PTS645 | SW1 |
| 1 | TEST | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Horizontal | J2 |
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Questions
How big is the Tpms silencer PCB?
It measures 33 × 51.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Tpms silencer use?
27 parts, built around the ATTINY841-SSU, MICRF112YMM and CR2032. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Tpms silencer KiCad files?
From the gcormier/tpms_silencer repository on GitHub, at the commit this page was made from: the board is PCB/tpms_silencer.kicad_pcb and its schematic PCB/tpms_silencer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tpms silencer design in my own project?
Its repository states no licence, so its author keeps all rights: ask gcormier before reusing the design.