Need help for circuit check. This is a line flooower robort. I used two motors,

Question

Need help for circuit check. This is a line flooower robort. I used two motors, one switch, two tcrt5000, two 220O resisters, two 4.7K resisters and two irf510. I used 4 AA battery as power. I checked the circuit there is no short circuit but I do not know why there were something heat up will quick. Also, the wheel does not move. So if there any one can check the circuit for me will be great. Thank you.

Also, Is it any other way to fix the problem? I mean all I have is there and I can use Arduino for it. But I just really want to fix this and see why it is not working.

Explanation / Answer

The circuit which u kept a diode ,irf510 ( a MoSFET) and also reflective optical sensor using aurdino(tcrt5000)

first check the both circuits operating conditions and the mosfet required max 100v so has to give 5 amps u have taken a 4 A battery , I recommend you to check the sensor and mosfet characteristics both forward operating characteristics and for the heat problem as u r saying u need to check reverse characteristics so has to keep snubber circuit and a heat sink base reverse current heat dissipation

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