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I m using Airtel SIM and this worked fine at my LAB and Office in Gujarat.. But when transferred the SIM and the device to Bihar it is giving this Error.
I tested for following commands..
AT+CPIN? : Response was +CPIN READY
AT+CREG? : Response was +CREG:0,5 ( this means Registered Roaming)...
hi
Can't give Opto Isolation to my application for separate grounds.. as the application demands to run on Battery as well...
suggest other possible alternatives...
Hello
I am driving a Spark Ignition Circuit from my micro controller using a 12V DC supply thr a Relay.
However when the spark ignition system is powered using this 12V the micro controller sometimes shows erratic behaviour. Tried suppressing this noise using a 0.01 Cap + 100 Ohms Res Snubber...
DS1302 Problem
I have successfully interfaced DS1302 with 8051.
The application demands that at some of time I need to STOP the Clock, wait for 2 to 5 Seconds and then RESTART the CLOCK.
I am trying to do this using CH bit of DS1302. However am unsuccessful. Even though I am appropriately...
8051 and DS1302
I have successfully interface 89C51 + DS1302 + Display + Keypad and a Relay which is driving a solenoid.
Well, the system works fine but sometimes the RTC Time stops intermittently and the clock stops on its own. This peculiar phenomenon occurs especially when I try to actuate...
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