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sometimes pic microcontroller don't received sms on rda from sim900d module because of different voltage levels used for both. operate pic on 3.3 v or add logical converter on rx of pic to match logic level. add 2 diodes in vcc series of microcontroller it also work. i faced this problem many...
check schematic of ac motor speed controller input on adc pin for zero crossing.... no code because i never worked on 8051. if you code for pic or st microcontroller i can help you.
https://obrazki.elektroda.pl/1681773100_1366401596.html
if you want to use waste product for your research then you should have good knowledge of electronics because risk is always there...... you can use battery instead of mobile but again risk is there........over current charging of battery is very dangerous it may harm you very badly..... in...
if you can't able to get nokia 3310 then switch to other mobile and charger to complete your task.... without mobile you can't measure current as i mentioned reason in my previous post.... :?:
yes you must have a mobile so that you measure current. if there is no load , no path for current to flow so no current if no load. see attached picture for further infomation. I hope you will get your answer
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yes you must have a mobile so that you measure current. if there...
If you study datasheet of pic16F72, they mentioned that only following adc configuration you can use. use cannot make only AN3 for adc use have to use following group configuration.
1- NO_ANALOGS 7 // None
2- ALL_ANALOG 0 // A0 A1...
set your multi-meter in current measuring mode and connect your meter in series between charger and mobile. Remember to connect charger with mains :razz:
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