I pretty well have to pop the chip out to re-program it to prevent the target circuit connections from interfering with the programmer and vice-versa.
1. What is a "SN743257"? I can't find any reference to it.
2. Which "G6HK2" do you plan to use? I found dozens of variations.
(I think it is running at 8hz). Does it matter ?
So you think the problem is caused by not having external crystal (so the ATTiny85 runs too slow) ?
No, the ATTiny85 uses internal oscillator (I think it is running at 8hz). Does it matter ?
#define txPin [glow]3[/glow] // ic pin [glow]2[/glow]The pin [glow]2[/glow] (txPin) of attiny85