2 layers30 × 52 mm
Raspi ir
custom-ds/Universal-Remote-LIRC
Build a universal remote control using a Raspberry Pi with the LIRC library
32 partsGPL-3.0
2 layers62 × 83 mm
Vehicle Power Switch
custom-ds/Vehicle-Auto-OnWith the Arduion programmer board loaded with the jtag2updi software, and the Pin 6 from the Arduino connected to the Reset line on the ATTiny404, you can Build and Program directly inside of the Visual Studio Code.
- Size
- 62 × 83 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 49
- Nets
- 31
- Pads
- 140
- Tracks, vias
- 261, 128
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 24 Jun 2024
- Updated
- 29 Oct 2026
Overview
Vehicle Power Switch is an open-source printed circuit board by custom-ds, from the custom-ds/Vehicle-Auto-On repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 62 × 83 mm with 49 parts on 31 nets, routed with 261 tracks and 128 vias.
It is built around the ATTINY404-SSN, LIS2HH12 and 1N4007FL, with the MMBT2222A, BSS84 and STX-3790-5N among its other parts. Its parts include 10 capacitors, 10 resistors, 8 connectors, 5 diodes and 5 fuses. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
6
ATTINY404-SSN
SOIC-14-40℃~+105℃ 1.8V~5.5V 10bit 12 128Byte 20MHz 256Byte 4KB 8 Bit AVR Built-in FLASH SOIC-14 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
LIS2HH12
LGA-12(2x2)-40℃~+85℃ 1.71V~3.6V 16bit 5uA Accelerometer SPI、I2C X,Y,Z ±8g LGA-12(2x2) Accelerometers ROHSSTMicroelectronicsAccelerometers
1N4007FL
SOD-123FL-65℃~+150℃ 1.1V@1A 1A 1kV 30A 5uA@1kV Independent SOD-123FL Diodes - General Purpose ROHSSMCDiodes - General Purpose
MMBT2222A
SOT-23-55℃~+150℃ 1 NPN 100 100nA 1V 300MHz 300mW 40V 600mA 6V NPN Standalone SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)BSS84
SOT-23-55℃~+150℃ 1 P-Channel 130mA 2.8pF 24.6pF 2V 3.2Ω@5V 300mW 4.7pF 50V 590pC@10V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETsSTX-3790-5N
THroughholeTHroughhole Wire To Board Connector ROHSKyconWire To Board Connector
README
README.mdVehicle Auto-On
Source
Configuring the Dev Environment
Install Platform IO in Visual Studio Code
Use the jtag2updi
https://www.electronics-lab.com/project/programming-attiny10-platform-io-ide/
Programming
With the Arduion programmer board loaded with the jtag2updi software, and the Pin 6 from the Arduino connected to the Reset line on the ATTiny404, you can Build and Program directly inside of the Visual Studio Code.
To build, go to the bottom-left part of the screen to the Status Bar area of VSCode, and there should be some little icons that Platform IO installed. The Checkmark icon is the Build option, and will compile/build the code that is written.
Once it compiles successfully, there is a second icon that is a right-arrow to click, which will utilize the Arduino programmer to program the ATTiny via UPDI.
Parts
49| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 10nF | Capacitor_SMD:C_0805_2012Metric | C2, C4, C5, C6, C7, C8, C9, C10 |
| 5 | ~ | Custom DS:Anderson Powerpole Vertical | J1, J2, J3, J4, J5 |
| 4 | 1N4007FL | Diode_SMD:D_SOD-123 | D1, D2, D3, D5 |
| 4 | 3522-2 | Custom DS:Fuse Clip Blade - 3522-2 | F2, F3, F4, F5 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_ISO14580_Pad | H1, H2, H3, H4 |
| 3 | 4.7k | Resistor_SMD:R_0805_2012Metric | R2, R3, R6 |
| 2 | 100k | Resistor_SMD:R_0805_2012Metric | R8, R10 |
| 2 | 22uF | Capacitor_SMD:C_0805_2012Metric | C1, C3 |
| 2 | MMBT2222A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric | R9 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 22k | Resistor_SMD:R_0805_2012Metric | R11 |
| 1 | 470 | Resistor_SMD:R_0805_2012Metric | R5 |
| 1 | 47k | Potentiometer_THT:Potentiometer_Bourns_3386P_Vertical | R7 |
| 1 | ATtiny404-SS | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U3 |
| 1 | AVR-UPDI-6 | Connector_IDC:IDC-Header_2x03_P2.54mm_Vertical | J8 |
| 1 | BSS84 | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | Debug Hdr | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J7 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D4 |
| 1 | LIS2HH12 | Package_LGA:LGA-12_2x2mm_P0.5mm | U2 |
| 1 | MCP1703Ax-250xxTT | Package_TO_SOT_SMD:TSOT-23 | U1 |
| 1 | Polyfuse | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | STX-3790-5N | Custom DS:Stereo Jack Vertical - STX-3790-5N | J6 |
| 1 | ~ | Custom DS:12V Relay - ACNH | K1 |
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Questions
How big is the Vehicle Power Switch PCB?
It measures 62 × 83 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Vehicle Power Switch use?
49 parts, built around the ATTINY404-SSN, LIS2HH12, 1N4007FL and MMBT2222A. 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 Vehicle Power Switch KiCad files?
From the custom-ds/Vehicle-Auto-On repository on GitHub, at the commit this page was made from: the board is PCB/Vehicle Power Switch.kicad_pcb and its schematic PCB/Vehicle Power Switch.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Vehicle Power Switch design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).