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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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