I2C / Full H-bridge Interface

Other Hardware Robotics
1

Hello! I have built myself a full H-Bridge and would like to interface it with my I2C chip and unregulated voltage. But I am unsure how.

So from my I2C circuit, I get 16 channels, each with 1 PWM, 1 ground and 1 unregulated voltage pin. (It's a custom breakout board based on this: Adafruit 16-Channel 12-bit PWM/Servo Driver - I2C interface [PCA9685] : ID 815 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Now how to I connect this to my bridge? I'm guessing I'm going to need a driver or build an interface, do anybody have any good suggestions that would link these two halves together? Preferably without pre-built modules or chips with large quiescent current draw.

2

Adafruit uses that I2C chip in their motor shield version 2. Maybe take a look at the schematic and see how they

have it hooked up to the driver chips. Might have to do some research on the driver chips to see which lines are

used so in that way you maybe able to use the adafruit software to drive the H-bridge.

You haven't described your home built H-bridge. Does it work using the arduino pins to do the signaling?

Driver chips(boards) are so cheap these days that building your own is a PITA.