I have the parts to build a quadcopter, but firts I want to build a rover to test Mission Planner and so. I have the navio+ connected to the MP but now I’m stuck. I don’t know how to connect the throttle H-bridge, and how to control via joystick (Joystick is calibrated and all).
I have readed all navio+ docs, and searched in internet, I can’t find any tutorial step by step for rovers with navio+ and mission planner.
I would appreciate any tutorial step by step for a rover or similar (for the quad I have de uavmatrix tutorial). I came to test navio+ but I found that there are nothing about rovers, and Mission Planner is very complicated for me.
I have a rover controlled with RPi/Navio. The motors are controlled with a Sabertooth 12A.
You say you plan to use a H-bridge to control the motors of your rover. The problem with H-brigdes is, they do not work on simple PWM input. PWM controls the motor speed, but to change motor direction/brake/freewheel, you have to switch 2 other inputs on and off and that is not possible with Navio alone. Navio is meant to control RC compatible ESCs.
The easiest/cheapest way would be to buy two RC brushed ESCs to control the motors.
Have a look at rover.ardupilot.com, there you find examples for building a APM based rover.
I am trying to use a sabertooth 2x12 and I was wondering if you knew what configuration is needed to get it to work with the navio 2. Currently we have switch 1 set to low and it only allows me to control one set of wheels on our rover with a skid steering setup. any help would be appreciated.
Let ardurover control the skid steer. Set the sabertooth to non skid steer operation and ardurover to “skid steer out 1”
This way ardurover knows it is controlling a skid steer vehicle and you can use pivot turns. etc.
Problem is, the ardurover skid steer implementation still sucks. It only uses maximum 50% throttle for steering/direction control. If you have a heavy rover with a lot of wheels, it will not be able to turn on the spot.
Enable skid steering in the sabertooth controller. Much better control, but Ardurover (skid steer out = 0) will not know about the skid steering ability of your rover, so no pivot turns in automated driving. You can pivot in manual mode of course.