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Original thread:
Post 5 made on Saturday December 12, 2020 at 16:07
Lyndel McGee
RC Moderator
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August 2001
12,777
It could be a voltage level issue as RS232 specification was originally 12V and the Philips RFX is only 5 V.

The fact that the Arduino is having issues as well points me in this direction.

You might try a voltage level shifter. (search amazon) between the 2 ports and use +12V as a reference. You could also try using a MAX232 (again search amazon) and use +12V as input to that board.

I found this. Maybe it will help?

[Link: forum.allaboutcircuits.com]

Last edited by Lyndel McGee on December 12, 2020 17:37.
Lyndel McGee
Philips Pronto Addict/Beta Tester


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