hi all,
I want to build an external capacitive touch keyer for use with my bitx40. I know that there is built in capability, but i want an external unit.
Im looking at :
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I think that's a good starting point but i was thinking of using a relay (https://m.ebay.com/orderDetails?itemId=162247557098&txnId=1628767184006) and attiny85 dev board ( https://m.ebay.com/orderDetails?itemId=162329675808&txnId=1627917584006&skus=Select:USB%20Development%20Board&varId=461344558549 ).
Ultimately i my goal is to have a keyer that can be used with any radio. I'll strip out all code not needed and dont want the sidetone. Do i still need the transistor circuit? Cant i simply wire the paddles into the attiny85?Thoughts?
Suggestions?
