Turtle Rover – Compass sensor

As part of the Turtle Rover position system the HMC6343 compass sensor is integrated into the system.

Sparkfun HMC6343 board inside its housing.

Sparkfun HMC6343 board inside its housing.

Compass housing cover.

Compass housing cover.

Shapeways messed with the shape this time.

Shapeways messed with the shape this time.

Compass sensor found its place on the Turtle Rover.

Compass sensor found its place on the Turtle Rover.

In this installation position the HMC6343 needs to be configured for X-axis up mode to sense and compensate tilt correct.


Alternative Turtle Rover hat rev. I

I had to make a new iteration of my alternative electronics hat for the Turtle Rover. On the former revision G I run into trouble with external I2C due to level shifting issues. Took the chance to simplify the circuit and route I2C and RS232 directly to the Raspberry Pi header instead through ARM micro-controller. So the server software can directly access any external peripherals through kernel drivers. Hardware description available on Github.

Turtle Rover hat rev. I top.

Turtle Rover hat rev. I top.

Turtle Rover hat rev. I bottom.

Turtle Rover hat rev. I bottom.

In addition I created a experimental motor driver board with dual ST L6206 DMOS full bridge driver as a direct drop-in replacement for the L298.

Experimental L6206 motor driver board.

Experimental L6206 motor driver board as replacement for L298.