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its simple use unit 6210 then you have to build first the DLR3 circuit so that you can activate the internal modem of the 6210 the dlr3 has already rs232 so you can connect directly to your pc...
the baut rate is not a problem, i thnk rs232 is 25 feet while the rs485 much longer distance the only thing is the rs485 is can drive long distance so there is no problem about baut rate...
adc0804 speed
perhaps try to increase the oscilation by experimenting the R/C circuit of the ADC0804, or look 4 an High speed ADC.... for ur design i thnk much better you need to storge it 1st b4 feeding it to the pc then after temporarilly storge then you can transfer it to the pc serially by...
well as for my experience i build one but i use a nokia 6210, well as u mention you get the reply (+CMGR: 0,,0)yes i think there is no message on that address try to other address just simply change the address no. because in nokia if that specific address no message you'll recieve an error...
Re: protocol x10
x10 protocol is a code that x10 module accept in every protocol its has a specific task or command that is already programmed, x10 module is a module that capable to transmitte & Recieve data thru ac power line at 120khz carrier, it is commonly known as home & office automation...
optrex display
i search the spec. of the DMF5003 i suggest you can simply disconect the power supply of the display module and connect to the switch, and if your intention just to hide just not to view the value on the display you can also adjust the trimpot/trimer of the display located at the...
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