I have 433Mhx Tx and Rx which i have to test while i was noticing the data output pin with multimeter it was showing 3.5V when the transmitter was switched off and while suplly the Tx the output was 4.5V and I am using HT 12E at tx section with open A0 to A7 only using D0 to D3 ....
at ~~22K osc and 750k at HT D which is not used at this time...
So, please tell how to test Rx with any hassle of Oscilloscope..??
I am working on wireless bot, using TX and Rx of 433mhz with HT 12E/D the circuit was working fine but after some time the LED at ht 12d valid trans. stop glowing ( it was low) , then i changed both decoder i.e. HT 12D and rx it work but now again there is problem in that section!
so, i think to test my rx module with tx which was using ht 12e and tx module it was working fine then noticing the voltage level at data pin i notice it was ~~4.9V when tx was on so, when i switch off the tx it goes to ~~3.5V...
Ritesh jee,
can you upload schematic diagrams both the Tx and Rx sides? perhaps you might be doing a silly mistake unknowingly. any discussion without actual diagrams and actual wiring what you sis, wont yield any result but times passes ON. dont feel bad, right.
can you upload schematic diagrams both the Tx and Rx sides? perhaps you might be doing a silly mistake unknowingly. any discussion without actual diagrams and actual wiring what you sis, wont yield any result but times passes ON. don't feel bad, right.
perhaps you might need specialised equipment for testing RX alone or TX alone.]
thwithout a receiver , the tx cant be checked. if you mean testing the Tx and Rx pair syand alone without HT12 e/D or micro, i remember datasheet gives some info