TX module heating up ????
Hi, I have a normal cheap chinese type TX module connected to my 877A.
PIC is looped to send an HSEROUT .....every 2 seconds.
Though it works but but my TX module is heating up for some reason, Anyone knows why this could be happening, data is going to the TX module via 10K already, should the resistance be changed?
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maybe
Maybe you have a 3.3V TX module and run it on 5V... if you connect an mA-meter you can see the consumption and check against the datasheet
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It is a 12V module, I am using the same for other 12V running applications as well. It is running smooth there.Originally Posted by Jumper
I just wanted to confirm that using HSEROUT.... is not playing any part is heating up the module, may be data goes differently or something. I am sorry but my knowledge on the subject is limited so I am trying to erase the possibility of this thing.
Have you used such module with the above statements, could there be any connection in between ?
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Serial data is serial data. Does not matter if it is generated by hardware or software.
Maybe it is a bad module? Have you tried swapping in another one?
Dave
Always wear safety glasses while programming.
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Module is heating up because the data pin is high (around 4V) permanently and voltage fluctuates when data is there.
Is it normal when using HSEROUT, is it possible to make the data pin low in standby condition?
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The USART TX pin idles high, so a simple inverter circuit should be all you need to hold the RF transmitters data in pin low during idle periods.
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