search

jwilleke / ArduinoHA-examples

Various attempts to Connect to home assistant using MQTT
0 stars 0 forks source link

Controlling fan speeds #3

Closed jwilleke closed 5 months ago

jwilleke commented 5 months ago

It appears the direct 12V is too fast to spin Fans for Stirrers. The PTFE Magnetic Stirrer Mixer Stir Bars get spun to the side of the containers.

Been difficult to find any solution to use PWM from Arduino (UNO R4 wifi) to control fans.

Put item in forum.arduino.cc.

jwilleke commented 5 months ago

Can get the Stirrers to work properly with about 5V only if the Stirrers start slowly and then ramp up speed.

jwilleke commented 5 months ago

Guess we need to do more testing.

Verify that this does this work with 12V with GRD from both 12V source and Arduino tied.

jwilleke commented 5 months ago

Verified and added 5V power supply until the PWM issues is decided.