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Rasp latch button

aresta·Rasp_latch_button

Rasp latch button PCB layout, top view — open source board by aresta
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About the Rasp latch button PCB

Rasp latch button is an open source PCB design by aresta, published on GitHub. It is a 2-layer board measuring 22.1 × 20.3 mm, with 15 components from 10 distinct parts.

By type, the board carries 6 resistors, 2 transistors, 2 connectors, 2 diodes, 2 capacitors and 1 switch.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

Mini HAT with a Push Button to Power the Raspberry Pi On and Off Safely, After the Shutdown Sequence Completes

- When the Raspberry Pi is off, a button press powers it on. - When the Raspberry Pi is on, a button press initiates the shutdown sequence, and when it completes, cuts the power automatically. - An additional switch in the USB cable is not necessary; after the shutdown, the power is completely off.

Only shutdown sometimes is not enough. After the shutdown the Raspberry Pi enters a halted state, the operating system has ceased all activity, but the hardware remains powered. Most models continue to draw power (up to 1.5W for a Pi 4). The red Power LED often remains lit, and some peripherals…

Rasp latch button, from the project README
From the project README

Rasp latch button bill of materials (BOM)

15 components, 10 distinct parts.

QtyPartRefs
1
NDT456P
Q1
1
AO3414
Q2
1
Conn_02x03_Counter_Clockwise
J2
1
USB_C_Receptacle_PowerOnly_6P
J5
1
SW_Push
SW1
2
D_Schottky
D1, D2
2
10n
C1, C2
3
5.1K
R1, R5, R6
2
200
R2, R3
1
100K
R4

Rasp latch button design files

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

Rasp latch button: common questions

How big is the Rasp latch button PCB?

The Rasp latch button measures 22.1 × 20.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Rasp latch button?

15 components, from 10 distinct parts. The full bill of materials is listed on this page.

Where can I download the Rasp latch button design files?

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

Can I use the Rasp latch button design in my own project?

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

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