Re: CW Key/Keyer/paddle idea
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They're not too expensive and work quite well. See ebay #201042782490
Jack, W8TEE
From: ron van doremalen (PA3FAT) <ronvandoremalen@...>
To: [email protected]
Sent: Thursday, December 21, 2017 11:55 AM
Subject: Re: [BITX20] CW Key/Keyer/paddle idea
Probably the LCD isn¡¯t i2c capable. There are with i2c, or use a cheap available converter.
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Ron ¨C PA3FAT
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All:
The way Ashhar is using a single ?C I/O line to key the ?BITX is pretty clever, but some people are having issues with different keys/keyers/paddles. I think the main reason he used a voltage divider for key sensing is because he was running out of I/O pins
on the Nano. Looking at the code, the LCD display uses the standard LiquidCrystal library, which eats up 6 I/O pins. I know Allard has Rel. 2.0 of the software going, but I'm wondering if A4 and A5 could be moved and the I2C interface used for the LCD display.
That would free up enough lines for the keyer to dedicate a dit and dah pin for each. Quite honestly, I have not looked at Allard's code yet (too many alligators), so I'm just tossing this out there for discussion.
Jack, W8TEE
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