Note: v1.2 requires each board have its i2c address set manually. We chose a different brand for production chips vs what we tested with. We are more than willing to set these for you as the solder jumpers can be difficult to solder. This will be fixed in the next batch.
The goal of the IOByte is to create a better breakout for the PCF8574 GPIO Extender mostly focused on quickly deploying relays and switch panels via i2c.
The initial idea behind the PCB design was based on having it fit directly on a common 8-Channel relay board. Existing breakouts generally would require 10 DuPont leads (or other wire interface) to the relay board. Solder on a 10p female header, connect I2C and you have a super fast and cheap deployment.
The IOByte can also act as a binary input device. The ground row of pins makes it easy to deploy simple switches connected from and of the 8 open-drain pins to ground. Quickly deploy switch panels with your favorite hardware.
