Rutunayak
Newbie level 3
hello sir, when i control L293D chip with 89S52 using switches don't know why my controller does not work. when i check L293D and Micro controller circuit separately on bread board it separately worked, but when i try to control DC motor movement via controller my controller fail, i feel that 12 volt driver supply may b affect controller, so i separate out controller as well driver supply, now my driver circuit works on 12V supply and controller works on 5V. even i did not connect any of enable pin of my motor then also my driver circuit works properly.. i don't know why my controller fail, i already lost my 5 controller, but still did not get the what is the problem