I have a Configurable 5V I/O card for the Raspberry Pi on Kickstarter.
Features
- All Raspberry Pi I/O lines
- 8-bit bidirectional 3.3V to 5V level translator
- Fuses on 3.3V and 5V power lines
All of the Raspberry Pi I/O connections are brought to GVS connectors. This is:
- (8) GPIO lines on GVS connectors
- (2) SPI interfaces (can be configured as 5 GPIO lines)
- (1) UART interface (can be configured as 2 GPIO lines)
- (1) I2C interface(can be configured as 2 GPIO lines)
Level translators
The board uses an 8-bit wide Texas Instrument TXS0108 voltage translator to convert up to 8 of the 3.3V I/O lines to 5V I/O levels.
Fuses
- The board has Resettable fuses on the 3.3V and 5V from the Raspberry Pi.
- These fuses protect your Raspberry Pi from overloads.
- These fuses are 1/2 Amp PTC fuses.
- PTC fuses have certain advantages (they are self healing) and disadvantages (they are not like a wire fuse which acts like a switch).
- If you trust your wiring you may choose to solder a wire over the fuse.
- Care should be taken when doing so.
