Use two HAT/pHAT on a Raspberry PiDesigned by 8086 Consultancy in United Kingdom
Allows two HAT or pHAT (or a mix) to be attached to a single Raspberry Pi 40 way connector. All pins are connected except ID_SD and ID_SC (HAT EEPROM) which have solder jumpers - this allows HAT wh...Read More…
Allows two HAT or pHAT (or a mix) to be attached to a single Raspberry Pi 40 way connector.
All pins are connected except ID_SD and ID_SC (HAT EEPROM) which have solder jumpers - this allows HAT which follow the specification correctly to operate without a conflict on the EEPROM. The EEPROM on the primary HAT (over the Pi) is always connected to the Pi and if the solder jumpers are bridged the ID_SD and ID_SC signals are connected to both primary and secondary HAT (for use when only the HAT/pHAT in the secondary connector has an EEPROM). When not using the EEPROM you may need to manually configure the Pi for your HAT.
Before ordering/using multiple HATs you MUST check for conflicts - for example enable/select pins when using SPI, I2C addresses and GPIO pin conflicts and modes, I would advise checking on pinout and/or with the HAT seller for used pins/modes in use.
The Butterfly board would normally be used with the "Male + Long Female" headers ("Long Female" for the Pi + primary HAT and "Male" for the secondary HAT).
The PCB for sale are green.
Allows you to combine your Butterfly order with a range of self solder connectors.
The hardware kit includes everything (other than the connectors above) you need to mount the Butterfly on your Raspberry Pi and then mount up to two HATs.
Raspberry Pi / Touch pHAT / Unicorn HAT HD / Standoffs are not included - you are buying a Butterfly adapter PCB [and self solder connectors / hardware kit if selected from the options above].
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