Welcome to Synthiam!

The easiest way to program the most powerful robots. Use technologies by leading industry experts. ARC is a free-to-use robot programming software that makes servo automation, computer vision, autonomous navigation, and artificial intelligence easy.

Get Started
Asked — Edited

Rover And H-Bridge.

I'm trying to get a Rover 5 chassis going with EZ and an H-298 H-Bridge. I've watched DJ's video but I have a couple of questions. I'm using an external source to power the motors, connected to vcc and gnd. I have all the signal wires connected to digital pins on the EZ.

1. Do I need to connect the +5V line, or will the board draw power from the external (motor) power?

2. Do I need to clip the 2 inner enable pins and bridge the remaining 2 pins and connect them to a PWM port? Or should I connect each of the outer pins to separate digital pins, and then add separate PWM panels for each motor?



Upgrade to ARC Pro

Become a Synthiam ARC Pro subscriber to unleash the power of easy and powerful robot programming

AI Support Bot
Related Content
If you go into the Store and click on the "?" for the h-bridge DJ has a connection schematic for helping. He does have the 5V and GND ran to the H-bridge along with the 2 pwm lines and 2 digital lines. The two pwm lines drive each motor's speed while the digitals are used for foward or reverse.
Thanks, orwnic. I see the jumpers on the enable pins as shipped as well. Will try again. I thought it needed 2 PWM pins, 1 for each motor. Again, thanks.
@strathcona In case you are still wondering... you could use 2 PWM signals if you wished to have separate speed controls for left and right motors, or jumper both to save a digital port.

I am finding I needed to use both to regulate the speed of one side of a robot otherwise it tended to veer off to the right all the time. By using separate PWM for each motor I can correct for other mechanical or motor inequalities.
That's exactly what I did, @Gunner!