HardLabs

RetroPie Power Board v1a

baldengineer·Raspberry-Pi-Soft-Power-Controller·kicad/RetroPie Power Board/Version 1/RetroPie Power Board v1a.kicad_pcb

RetroPie Power Board v1a layout, top view — open source AVR/Arduino board by baldengineer

About the RetroPie Power Board v1a

RetroPie Power Board v1a is an open source AVR/Arduino PCB design by baldengineer, published on GitHub. It is a 2-layer board measuring 122 × 112 mm, with 59 components from 45 distinct parts.

Its main chip is the ATMEGA32U4-AU, from the AVR/Arduino family. Other key parts include the NCP1117ST50T3G and tps22918. By type, the board carries 16 connectors, 13 resistors, 9 capacitors, 7 diodes, 5 test points and 4 transistors.

It belongs with the dev boards & breakouts and retro computing designs in this gallery, and the repository also holds 1 earlier revision of it.

From the project

Originally intended to be a controller for a RetroPie. A soft power controller that allows for Raspberry Pi proper shutdown. Intention is to turn this into a "hat." This is a work in progress. It works for me, kinda.

For now, you can find more information at: https://hackaday.io/project/21625-raspberry-pi-soft-power-controller

Main components on the RetroPie Power Board v1a

ATMEGA32U4-AUNCP1117ST50T3Gtps22918

RetroPie Power Board v1a bill of materials (BOM)

59 components, 45 distinct parts.

QtyPartRefs
1
ATMEGA32U4-AU
U1
1
NCP1117ST50T3G
U2
1
tps22918
U3
1
FET-Reverse
Q1
1
FET-Pass
Q2
1
Latch-NPN
Q3
1
Reset-NPN
Q4
1
16MHz
Y1
1
DC-In
CON1
1
ISP-32u4
CON2
1
EXT-HDR
J1
1
CURRENT
P1
1
VIN-HDR
P2
1
SER-HDR
P3
1
USB_5PIN_SHELL
P4
1
5V-HDR
P5
1
SNES-HDR
P6
1
ON-HDR
P7
1
HBEAT
P8
1
LED-Front
P9
Show 25 more
QtyPartRefs
1
Load
P10
1
Vbus
P11
1
UVCC
P12
1
FET-HDR
P13
1
RESET
SW1
1
Pass-G
TP1
1
Latch-B
TP2
1
Load
TP3
1
Reset-B
TP4
1
Off-Sig
TP5
1
REV-RED
D1
1
GRN-PWRGD
D2
1
32u4-LED1
D3
1
32u4-LED2
D4
1
RXLED
D5
1
TXLED
D6
1
D_Zener
D7
3
0.1u
C1, C4, C8
2
22p
C2, C3
1
CAP 47uF Polymer 10V
C5
1
CAP 10uF Polymer 16V
C6
1
10uF
C7
1
1nF
C9
4
100k
R1, R9, R10, R11
9
1k
R2, R3, R4, R5, R6, R7, R8, R12 +1

RetroPie Power Board v1a design files

The KiCad project lives in the baldengineer/Raspberry-Pi-Soft-Power-Controller repository on GitHub; these links point at the commit this page was built from.

RetroPie Power Board v1a: common questions

What microcontroller does the RetroPie Power Board v1a use?

The RetroPie Power Board v1a is built around the ATMEGA32U4-AU, from the AVR/Arduino family.

How big is the RetroPie Power Board v1a?

The RetroPie Power Board v1a measures 122 × 112 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RetroPie Power Board v1a?

59 components, from 45 distinct parts. The full bill of materials is listed on this page.

Where can I download the RetroPie Power Board v1a design files?

From the baldengineer/Raspberry-Pi-Soft-Power-Controller repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the RetroPie Power Board v1a design in my own project?

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

Can I test firmware for the RetroPie Power Board v1a 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.

More boards in Raspberry-Pi-Soft-Power-Controller

Earlier revisions in the repo: RetroPie Power Board v1

Similar boards