Re: CEC firmware with RadI2Cino board? #ubitx #radiuno #firmware

Jim Sheldon

Wish edit was enabled.  The pins 2 and 3 I'm referring to are on the "Digital" plug.  Pin 2 is the A6 analog input for CW keying and pin 3 is 5 volts.  This resistor pulls the A6 pin up to 5 volts which is the key "UP" condition.  If the pull up resistor is NOT installed, that input "floats" and if it gets near zero volts, the software thinks a CW key is installed and is pressed (Key DOWN).


On Jul 15, 2018, at 11:12 AM, Jim Sheldon <w0eb@...> wrote:

You MUST put the 4.7K resistor between pins 2 and 3 of the Raduino regardless if you are using factory or CEC software to keep it from going into transmit without pressing a CW key.  That's spelled out specifically in the instructions and if you don't have that resistor in place and wired correctly that may well be your problem.


On Jul 15, 2018, at 10:53 AM, km4vhx@... wrote:


That is a great offer to provide Ian with a free Radi2Cino, it's a shame he hasn't taken you up on it.  Perhaps he doesn't want to have to maintain the code changes either, which is understandable.

I was able to modify Ian's CEC code so it didn't go into transmit immediately.  However, it would still go into transmit if I turned the rotary encoder quickly (???).   Turning it slowly worked properly.  

My current plans are to go with the TFT/Arduino Mega display for my uBITX, I already had all of the hardware laying around, I just haven't gotten it wired together yet.   I've since bought an Icom 7300 and have been spending my radio time playing with it, and putting up antennas, so the UBITX has taken a back burner. 

Jeff, KM4VHX

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