lupe

Hello all, I have some general questions if someone can help me out. I have a supply of receivers and transmitters that I would like to use in my project using an Atmel AVR micro. The receiver uses a KESRX01 IC and a PIC micro. I would like to disconnect the Data out line from the receiver and connect it to my AVR micro. I can currently read the data from the transmitter by connecting the receiver to my computers RS232 port. I cannot make sense of the data but am not to concerned right now as my main problem is the transmitter. The transmitter uses a PIC micro also with a SAW resonator operating at 295.05 MHZ. My problem is how can I use this transmitter without redesigning the whole thing and/or would it be easier to find a trasmitter that works with my frequency and use it instead. I am sure I cannot just take the PIC micro out of the transmitter circuit and expect to feed it with my own data from my micro. Thanks Lupe.

Thanks MP, I will try that, the board has a 100uf electrolytic across the 5 volt supply. I will try to smooth out the 12 volt regulator as well. Does anyone have a source for meter pcb's based on the 7107 IC. I have several 7101's from way back that I would like to use. My meter has been hooked up in my van for a few days now and is working well, I covered up the 4th Led only because looking at a Led that is moving frequently is not cool. So I now have a good reading of 14.1 volts on my display and looks to be within .1 volt from a digital multimeter.

I hooked up my meter to my cigarret lighter and it seemed to be working fine, It was fluctuating a little bit at first but the engine was cold. After a while it worked pretty well and didn't move by more than say .07 volts. I also verified my ref. voltage and it was at .097, I guess that's pretty close to .1 . I drove around all day working while the meter was connected. I even put my digital meter on it to compare values. Towards the afternoon it seemed my meter kit was off by more than .1 volts but still not more than .7 volts and that was while driving, opening and closing doors etc., . Not to mention my work van has 260,000 miles on it. Overall I am please although I would like to in the least understand a bit more about how the meter actually works. This might help explaing some things. Does anyone know how I can improve the display readings not to fluctuate as much, my digital meter does not fluctate as much as the one in the kit does.

I really don't see that as a problem, what I did is

Hello all, Yes Skipper I have built