Power Button Press Automation
About the Power Button Press Automation PCB
Power Button Press Automation is an open source PCB design by RICCIARDI-Adrien, published on GitHub under the MIT license. It is a 2-layer board measuring 20 × 30 mm, with 16 components from 8 distinct parts.
Other key parts include the LM393DT. By type, the board carries 7 resistors, 4 capacitors, 2 transistors, 2 connectors and 1 IC.
From the project
A fully analog circuit to simulate a power button press.
A fully analog circuit that activates an open-drain transistor for 1.5s after having waited 3s for the power supply to stabilize. The timings can be adjusted by changing the RC circuits component values.
It is currently designed for a 12V power supply and can drive any power switch from 1.8V onwards.
The circuit will rearm itself only when the board 12V is removed then reapplied. Thus, it is possible to do a software reboot of the PC or powering it off like with a normal power button.
Main components on the Power Button Press Automation
Power Button Press Automation bill of materials (BOM)
16 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM393DT | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 2 | BSS138 | SOT-23 | Q1, Q2 |
| 2 | TBC05-02-1-G-G Molex | TerminalBlock_Phoenix_MPT-0,5-2-2.54_1x02_P2.54mm_Horizontal | J1, J2 |
| 3 | 10u | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C1, C3, C4 |
| 1 | 100n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2 |
| 2 | 150K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R4 |
| 3 | 10K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R5, R7 |
| 2 | 18K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R6 |
Power Button Press Automation design files
The KiCad project lives in the RICCIARDI-Adrien/Power_Button_Press_Automation repository on GitHub; these links point at the commit this page was built from.
Power Button Press Automation: common questions
How big is the Power Button Press Automation PCB?
The Power Button Press Automation measures 20 × 30 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Power Button Press Automation?
16 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the Power Button Press Automation design files?
From the RICCIARDI-Adrien/Power_Button_Press_Automation repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Power Button Press Automation design in my own project?
Yes, under the terms of its MIT license, which RICCIARDI-Adrien chose for the repository.