- #1
Rob K
- 33
- 0
Hi there,
I have built an InfraRed beacon using a 555 timer using a 10K pot to tune the circuit.
How can I test that it is pulsing at the required 38kHz frequency that I need. I have tried using an oscilloscope, by connecting up the Earth and probing one of the legs of the IR LED, but I am not having any success.
Any help in this matter would be greatly appreciated.
Kind Regards
Rob
I have built an InfraRed beacon using a 555 timer using a 10K pot to tune the circuit.
How can I test that it is pulsing at the required 38kHz frequency that I need. I have tried using an oscilloscope, by connecting up the Earth and probing one of the legs of the IR LED, but I am not having any success.
Any help in this matter would be greatly appreciated.
Kind Regards
Rob