Hello i have question is it possible to read feedback pwm signal from grundfos alpha1 l water pump ?
the signal will be at 75 Hz and duty cycle
Code: Select all
95% Standby (stop)
90% Alarm stop: fault, blocked pump
85% Alarm stop: electrical fault
75% Warning
70 Saturation at 70 Watt
0% -70% Slope: 1 W / %PWM
before i used node red to control the pump running on pi, but it was not reliable if the router,pi,node red, mqttbroker had a fault then the hole system brakes down, and once the burner overheated because the mqtt broker had an error luckily i was at home and quickly cooled the burner and disconnected pwm cable. To not repeat my mistake i used rules on espeasy and if esp easy fails the pwm signal output will be zero so the pump will swich to constant speed. I can give the code and schematic if somebody is interested.
Ok back to topic is it possible to read the incoming signal of pump and display it to a dummy device using only espeasy?