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Expansion Board Compatibility on the Raspberry Pi

Expansion Board Compatibility on the Raspberry Pi
Created: 02/10/2015 | Last Updated: 22/05/2021

The list below shows the compatibility between our Raspberry Pi expansion boards and the various Raspberry Pi models which have been released.

Product Model A Model A+ Model B Model B+ Model 2 B Model 3 B Model Zero Model 4
1 Wire Pi Plus No Yes No Yes Yes Yes Yes* Yes
1 Wire Pi Zero No Yes No Yes Yes Yes Yes Yes
ADC Pi No Yes No Yes Yes Yes Yes Yes
ADC Differential Pi No Yes No Yes Yes Yes Yes Yes
ADC DAC Pi Zero No Yes No Yes Yes Yes Yes* Yes
Breakout Pi Plus No Yes No Yes Yes Yes Yes* Yes
Breakout Pi Zero No Yes No Yes Yes Yes Yes Yes
Expander Pi No Yes No Yes Yes Yes Yes* Yes
I2C Switch No Yes No Yes Yes Yes Yes Yes
IO Pi Plus No Yes No Yes Yes Yes Yes* Yes
IO Pi Zero No Yes No Yes Yes Yes Yes Yes
RS485 Pi No Yes No Yes Yes Yes Yes Yes
RTC Pi No Yes No Yes Yes Yes Yes Yes
Serial Pi Plus No Yes No Yes Yes Yes Yes* Yes
Serial Pi Zero No Yes No Yes Yes Yes Yes Yes
Servo PWM Pi No Yes No Yes Yes Yes Yes Yes

Products marked with a * will work with the Raspberry Pi Zero but they are larger than the Raspberry Pi Zero and will overhang the edge of the board.

I2C Address Compatibility

Product Default Address(s) Optional Addresses via config headers or solder pads
1 Wire Pi Plus 0x18 0x18, 0x19, 0x1A, 0x1B
1 Wire Pi Zero 0x18 0x18, 0x19, 0x1A, 0x1B
ADC Pi 0x68, 0x69 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F
ADC Differential Pi 0x68, 0x69 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F
Expander Pi 0x20 IO, 0x68 RTC  
I2C Switch 0x70 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77
IO Pi Plus 0x20, 0x21 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27
IO Pi Zero 0x20 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27
RTC Pi 0x68  
Servo PWM Pi 0x40 0x40 to 0x7F, see PDF datasheet for full list

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