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2 layers122 × 112 mmRetroPie Power Board v1a, the printed circuit board in 3D

RetroPie Power Board v1a

baldengineer/Raspberry-Pi-Soft-Power-Controller21

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.

Open in PCBKitView on GitHub.kicad_pcb
Size
122 × 112 mm
Copper layers
2
Thickness
1.6 mm
Parts
59
Nets
57
Pads
195
Tracks, vias
333, 23
Pours
2
Routed
Yes
KiCad
KiCad 4
Created
1 May 2017
Updated
10 Jun 2017

Overview

RetroPie Power Board v1a is an open-source printed circuit board by baldengineer, from the baldengineer/Raspberry-Pi-Soft-Power-Controller repository on GitHub. It is a 2-layer board of 122 × 112 mm with 59 parts on 57 nets, routed with 333 tracks and 23 vias.

It is built around the ATMEGA32U4-AU and TPS22918DBV. Its parts include 16 connectors, 13 resistors, 9 capacitors, 7 diodes and 4 transistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

2

README

README.md

Raspberry-Pi-Soft-Power-Controller

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

Requirements

  • Raspberry Pi running Jessie
  • 2 GPIO Pins on Raspberry Pi
  • AVR (Arduino Uno, Leonardo, etc) w/ 2 GPIO
  • Slide Switch (or Pushbutton)

Optional

  • Bald Engineer's RetroPie Controller

Notes

  • Currently the AVR code is designed for a SPST switch and not a push button. I'm working on a push button version, but that isn't what I needed in my project.
  • Please don't fab the PCBs as-is. There are design issues for them. I am open to collaboration on a "hat" version of these boards. I have some ideas. (Key, can we mount a barrel jack upside down??)

Parts

59
QtyValueFootprintReferences
91kResistors_SMD:R_1206R2, R3, R4, R5, R6, R7, R8, R12, R13
4100kResistors_SMD:R_1206R1, R9, R10, R11
30.1uCapacitors_SMD:C_1206C1, C4, C8
222pCapacitors_SMD:C_1206C2, C3
110uFCapacitors_SMD:C_1206C7
116MHzfreetronics_footprints:CRYSTAL_HC49_SMDY1
11nFCapacitors_SMD:C_1206C9
132u4-LED1LEDs:LED-1206D3
132u4-LED2LEDs:LED-1206D4
15V-HDRPin_Headers:Pin_Header_Straight_2x02P5
1ATMEGA32U4-AUATMEGA32U4-AU:QFP80P1200X1200X120-44NU1
1CAP 10uF Polymer 16VCapacitors_SMD:c_elec_5x5.3C6
1CAP 47uF Polymer 10VCapacitors_SMD:c_elec_5x5.3C5
1CURRENTPin_Headers:Pin_Header_Straight_1x02P1
1DC-Infreetronics_footprints:POWER_JACK_PTHCON1
1D_ZenerDiodes_SMD:SOD-323_HandSolderingD7
1EXT-HDRfreetronics_footprints:1X04J1
1FET-HDRPin_Headers:Pin_Header_Straight_1x02P13
1FET-PassTO_SOT_Packages_SMD:SOT-323Q2
1FET-ReverseTO_SOT_Packages_SMD:SOT-323Q1
1GRN-PWRGDLEDs:LED-1206D2
1HBEATPin_Headers:Pin_Header_Straight_1x02P8
1ISP-32u4freetronics_footprints:2X03CON2
1LED-FrontPin_Headers:Pin_Header_Straight_1x02P9
1Latch-BWire_Pads:SolderWirePad_single_1-5mmDrillTP2
1Latch-NPNTO_SOT_Packages_SMD:SOT-23Q3
1LoadWire_Pads:SolderWirePad_single_1-5mmDrillTP3
1LoadPin_Headers:Pin_Header_Straight_1x02P10
1NCP1117ST50T3Gfreetronics_footprints:SOT223U2
1ON-HDRPin_Headers:Pin_Header_Straight_1x02P7
1Off-SigWire_Pads:SolderWirePad_single_1-5mmDrillTP5
1Pass-GWire_Pads:SolderWirePad_single_1-5mmDrillTP1
1RESETfreetronics_footprints:SW_PUSHBUTTON_SMDSW1
1REV-REDLEDs:LED-1206D1
1RXLEDLEDs:LED-1206D5
1Reset-BWire_Pads:SolderWirePad_single_1-5mmDrillTP4
1Reset-NPNTO_SOT_Packages_SMD:SOT-23Q4
1SER-HDRPin_Headers:Pin_Header_Straight_2x02P3
1SNES-HDRPin_Headers:Pin_Header_Straight_2x05P6
1TXLEDLEDs:LED-1206D6
1USB_5PIN_SHELLfreetronics_footprints:USB-MICRO-5pin_PTHMOUNTP4
1UVCCPin_Headers:Pin_Header_Straight_1x02P12
1VIN-HDRPin_Headers:Pin_Header_Straight_1x02P2
1VbusPin_Headers:Pin_Header_Straight_1x02P11
1tps22918freetronics_footprints:SOT23-6U3

Questions

How big is the RetroPie Power Board v1a PCB?

It measures 122 × 112 mm and has 2 copper layers, 1.6 mm thick.

What parts does the RetroPie Power Board v1a use?

59 parts, built around the ATMEGA32U4-AU and TPS22918DBV. 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 RetroPie Power Board v1a KiCad files?

From the baldengineer/Raspberry-Pi-Soft-Power-Controller repository on GitHub, at the commit this page was made from: the board is kicad/RetroPie Power Board/Version 1/RetroPie Power Board v1a.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

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

Its repository states no licence, so its author keeps all rights: ask baldengineer before reusing the design.

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