Hello,
I have to make a low cost proximity sensor for an automatic aroma diffuser. It should release the spray when someone passes it.
My Idea: I dont want to use a microcontroller as it complexes the circuit. I want to let the circuit simple so I am thinking of using an Op amp by using its voltage difference option to detect the change in voltage output of the photodiode and activate the trigger. I also want it to stop releasing the spray for 15 min after the first release even if someone passes by. what can i use for this.
Please let me know if my idea is even correct and suggest me some options.
Cheers,
Varun
I have to make a low cost proximity sensor for an automatic aroma diffuser. It should release the spray when someone passes it.
My Idea: I dont want to use a microcontroller as it complexes the circuit. I want to let the circuit simple so I am thinking of using an Op amp by using its voltage difference option to detect the change in voltage output of the photodiode and activate the trigger. I also want it to stop releasing the spray for 15 min after the first release even if someone passes by. what can i use for this.
Please let me know if my idea is even correct and suggest me some options.
Cheers,
Varun