Servo motor control using PCA9685

[caiomac]

I'm new to nodered, I would like to know how to drive a servo motor.
I'm using a pc9685.

[dynamicdave]

Probably not quite what you are after - but it may give you some ideas as a starting point.
This was a project to drive a model racing car using Pulse Width Modulation (PWM) using a Wemos D1 Mini (flashed with ESPeasy) driven from a Node-RED flow. Note: ESPeasy also supports servo motors.

Slot car racing - - - just pure fun

I make no excuse at all - this is just pure fun. My students will love it !!!! I've just bought a slot car racing set from a local charity shop and have connected it to a WeMos D1 Mini on a breadboard driven from Node-RED via MQTT. On the breadboard is a PCA9685 (16-channel, 12-bit PWM module). It took some time sorting out the best PWM frequency and range settings, but eventually settled on 1500Hz with a range also of 1500. The car goes from a slow "creep" to just below "max speed", as at …