Forgive my ignorance but why does the U3s and VFO/Sig gen kits have a 100k resistor between RESET and 5v and the QCX does not. Could this be the reason why I can't update my QCX but using the same set up I can on my VFO kit.
On 11 Nov 2017 21:08, "Bob Sutton via Groups.Io" <zl1rs=[email protected]> wrote:
John, have you got 100K between the reset line pin 1 of the 328 and +5V?? The U3 has pin 1 directly connected to +5V (and I don't think has a ISP header on the U3 board anyway?), and the U3S has provision for R3 (100K) as an option to allow programming.
