Raspberry Pi Zero Room Board

Features

IR transmitter and receiver

Pinout:

• 11 - BMC17 - IR TX
• 12 - BCM18 - IR RX

These should be the default pins for the lirc_rpi module. Reference: https://github.com/Irdroid/Irdroid-Rpi

One-wire

Pinout:

• 7 - BCM4 - one-wire signal

This should be the default pin for the w1-gpio module. Reference: https://pinout.xyz/pinout/1_wire#

RFM69 module

Pinout:

• 19 - SPI0 MOSI - MOSI
• 21 - SPI0 MISO - MISO
• 23 - SPI0 SCLK - SCLK
• 24 - SPI0 CE0 - chip select
• 22 - BCM25 - DIO 0
• 18 - BCM24 - DIO 1
• 16 - BCM23 - DIO 2
• 15 - BCM22 - RST

References:

https://github.com/hallard/LoRasPI/blob/master/README.md

• GPIO22 - RST
• GPIO25 - DIO0 or DIO1 or DIO2
• GPIO23 - LED
• GPIO24 - LED

http://wiki.dragino.com/index.php?title=Lora/GPS_HAT

• GPIO7 - DIO0
• GPIO0 - RST

https://github.com/PiInTheSky/pits-hardware/blob/master/PiLoraGatewayV2.5.pdf

• GPIO5 - data LED
• GPIO24 - DIO5
• GPIO25 - DIO0

https://github.com/kobuki/RFM69OOK/blob/master/RFM69OOK.cpp https://github.com/SevenW/embapps/tree/master/ArduinoRFM69

LEDs

• 3 - BCM2 - LED1
• 5 - BCM3 - LED2
• 13 - BCM27 - LED3
• 29 - BCM5 - LED red
• 31 - BCM6 - LED green
• 32 - BCM12 - LED blue

Things to fix in next revision

• Add protection resistor on DIO 2 -- it can be bidirectional.

• Preferably resistors on all DIOs

• Add current limiting resistor on one-wire supply pin -- the devices don't draw much current at all and it makes sense to protect the RPi's supply from whatever environment the one-wire sensors are in.

• SMA connector footprint is too wide for my connector from Electrokit

• RFM69 footprint is too wide

• SMA sits in a bad position for a RPi3