Arduino-based soundcard interface for packet radio transmissions
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commit bcaebccf8184dbcd1c60284bd864e05644b7bc3d
parent ce33a8819ffe379b9fed12656e8f01870f894aa8
Author: joshiemoore <>
Date:   Fri, 19 Jul 2019 11:05:45 -0400

Documentation tweaks

Diffstat: | 4++++
Mpacket_interface.ino | 2+-
2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/ b/ @@ -41,6 +41,10 @@ PTT on when it detects signals in the aux cable that deviate from strongly from the baseline voltage. This works fairly well for my setup, but your results may vary. +The 100 millisecond delay in the loop acts as a "smoothing" for the signal +detection. Lower delay values may work better for you, but I found 100 +milliseconds to be just about perfect. + If you find that your radio is transmitting when it shouldn't be, you can tweak VOLTAGE_LOW_BOUND and VOLTAGE_HIGH_BOUND at the top of the sketch until you've found the appropriate range for your particular setup. It may be useful to use diff --git a/packet_interface.ino b/packet_interface.ino @@ -29,7 +29,7 @@ void loop() { // HIGH == PTT off digitalWrite(2, HIGH); - // turn on TX indicator light + // turn off TX indicator light digitalWrite(1, LOW); }