Hi All
I was hoping someone could hepl clarify the usage and operating characteristics of the above devices - have downloaded data sheets from Holtek not the most helpfull in thw world!!!!
I am designing a small project which requires 4-bit decodable data to be transmitted via one of the ubiqitous UK License Exempt AM/FM RF beasties - obvously for the encoding half the HT12A jumps out, (and for the decoding half the HT12D)
OK Question 1, CAN the HT12A be used with RF (instead of IR in the datasheet) if so what is the configuration for the carrier OSC inputs (or lack of!!)
2nd Question, in a typical pairing of the above devices can a steady logic output be obtained at one of the data outputs of the HT12D (obviously with a bit of logic) if one of the Tx buttons is HELD down. I am presuming the ouput will pulse for a brief key press.
Thank in advance
Dotnet
I was hoping someone could hepl clarify the usage and operating characteristics of the above devices - have downloaded data sheets from Holtek not the most helpfull in thw world!!!!
I am designing a small project which requires 4-bit decodable data to be transmitted via one of the ubiqitous UK License Exempt AM/FM RF beasties - obvously for the encoding half the HT12A jumps out, (and for the decoding half the HT12D)
OK Question 1, CAN the HT12A be used with RF (instead of IR in the datasheet) if so what is the configuration for the carrier OSC inputs (or lack of!!)
2nd Question, in a typical pairing of the above devices can a steady logic output be obtained at one of the data outputs of the HT12D (obviously with a bit of logic) if one of the Tx buttons is HELD down. I am presuming the ouput will pulse for a brief key press.
Thank in advance
Dotnet