Use up to four HAT/pHAT on a Raspberry PiDesigned by 8086 Consultancy in United Kingdom
Giant Butterfly Allows four HAT or pHAT (or a mix) to be attached to a single Raspberry Pi 40 way connector. All pins are connected, ID_SD and ID_SC (HAT EEPROM) have cuttable solder jumpers. For H...Read More…
Allows four HAT or pHAT (or a mix) to be attached to a single Raspberry Pi 40 way connector.
All pins are connected, ID_SD and ID_SC (HAT EEPROM) have cuttable solder jumpers.
For HAT/pHAT with an EEPROM (required by the HAT specification) you will need to cut the ID solder jumpers (with a sharp knife) to prevent conflicts. The EEPROM on the primary HAT (over the Pi) is always connected to the Pi. If at a later date you require the ID pins to be reconnected this can be done by bridging the jumper with solder.
The Giant Butterfly uses a 4-layer PCB to achieve it's small footprint. Due to the traces crossing over each other we do not recommend using it where high frequency signals/switching is required.
When 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 Giant Butterfly board is normally used with the "3xMale + 1xLong Female" headers ("Long Female" for the Pi + primary HAT and "Male" for the other HAT positions).
Pin 1 of each HAT position is marked with a white line next to the square pad.
The PCB for sale are black.
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 Giant Butterfly on your Raspberry Pi and then mount up to four HATs.
Raspberry Pi / HATs / Insulation tape are not included - you are buying a single Giant Butterfly adaptor PCB [and self solder connectors / hardware kit if selected from the options above].
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