I’m looking at using a Hall effect sensor to detect water meter pulses. Then use homebridge to trigger HomeKit sensor states. This video is very useful. Thank you. I also watched your flow sensor video. Both very helpful.
Hey, I’ve 2 questions I hope you can help me. 1. Is it also be possible to measure the rotation speed in km/h based on the measured RPM? 2. Is there a site where we can get this code?
Can you get away with a python code for real time rpm sensing? I'm obviously not talking about controlling any critical mission motor, but for instance, imagine I'm building a rotating base for showing objects in order to record a video about it and due to lighting and camera shutter speed I need to set a precise rotating speed (even if it's a low speed like 10 rpm), can we get away with python running in Linux to make the set up speed steady over time? Thanks , great video
I did a video on it, but it's a simple experiment to connect an output to an input and switch them on and off an known number of times and see if the inputs = outputs. You can try it with both polling and interrupts. BUT, the RPi and Arduinos are both seriously impacted by the other code that is running, so the test has to be done when the rest of your code is active. A simple output (print) can slow things down a LOT. Some examples of where slowness has caused me problems: this tachometer (speed limited), ultrasonic sensor, water meter, rotary switch. If occasional (and even frequent) loss of a data point will cause a big problem, then these may not be the best devices. There are a wide array of programmable controllers that might work better. I have not experimented with them yet, but I've seen what others have done.
tsbrownie , do you have this in vb code, I use a raspberry pi in homeseer and it is VB driven for the scrips, I just need the script to give the answer to the system, thank you, Tj
