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DIY Adjustable Electronic D...View Instructable »
That's an output with the signal coming from the bluetooth module.
Led was connected to the pads of the already existing LED. Any 3mm red/green led should work, the current limiting resistor is already in place.
Building A Precision Curren...View Instructable »
I wouldn't recommend doing that. We are talking about 2.4GHz here. A simple wire soldered to the antenna trace will likely affect the tuned circuit and cause worse reception.
thank you for the suggestion!
Building a 2x25W Bluetooth ...View Instructable »
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