Sensus 620 TCRT-5000 Sensor Holder

by peeter123 Nov 5, 2017
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Hi Izack,

I modified the comparator on the TCRT to include a bit of hysteresis. As you can see on the attached picture the high level is approximately 200 mV and the low level is 100 mV. This corresponds with 60/30 ADC counts on Arduino.

I don't know exactly why it is so low, probably because the reflectiveness of the disk is not that great.

Hi Peeter,

thanks for your answer, can you give me the details, which comperator you have used?

Regards Izack


thanks for the idea and the files. I have a smal questions, my IR with a Arduino is detecting 20 at a low level and 31 at high level. Why it is so close when I put my fingers on it I have a level like 700 or more. What is your high and low level?

Thanks in advance

Regards Izack