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Microcontroller › 8051 › 89c51 gets really hot
hi all. I was using an 89c51 uc to run dc motors (2) and interfaced them with l293d.
the only problem is that when I power the circuit with 5v the uc gets very hot. iam sure that the software is okay. can anyone give suggestions as to what I should do. I have used a mobile charger to power the circuit since it gives a constant 5v . pls help.
certainly there should be any other problem some where else.
use regulated 5 V supply for micro controller using 7805 chip. do not use any other.
one more thing if micro controller gets hot it might got burnt.
hi, bhatt. my project is about a GSM controlled robotic arm to be mounted on an UNMANNED GROUND VEHICLE. A dtmf decoder is used to produce an interrupt that will trigger the microcontroller to call on a subroutine. i have compiled the program using keil IDE. WHich was successful. the problem is is that when the motors start running the microcontoller gets realy hot. i have used a transistor on pin 15 of dtmf decoder 2n222a. when i interchange the terminals i.e collector goes to ground and emmiter goes to interrupt 1 pin the uc does not get hot. any suggestion anyone?
has anyone attempted such a project , pls your advice will be appreciated.
the micro controller only gets hot when you apply input more than specified or you try to take output current more than specified. dont give input more than Vcc
I have build this project. you can take help form this
http://www.engineersgarage.com/contributionn/ambhatt/cellphone-operated-robotic-arm