I bought another small motor driver, this time a module with 2 L91110 H-bridge chips. These dual L9110 H-bridge modules can be found for 3-4$ on Ebay or from Chinese webshops. The module has 2 L9110 IC’s, so it can control 2 DC motors or 1 stepper motor. You can download the datasheet of the […]
While playing with a couple of H-bridges one motor had more torque then the other. Although the voltage going to both motors was the same. The reason was that I was using 2 pins with different pwm frequencies. I had read that not all the pwm pins had the same frequency but couldn’t find a […]
I’ve added the top chassis plate to my hexapod. I glued 16 blue leds to it and then soldered wires to the leds. The wires are connected to 2 74HC595 shift registers. My hexapod needed some sensors so I mounted 3 small servos to it. One in the bottom plate that sweeps a SRF06 ultrasonic […]