Quote:
Originally Posted by jryanp  Same Problem, Already check voltage 2.8v Ok and 1.8v ok got tested but same problem |
Please try to add 20-30 omh resistor to CLK line, or solder CLK pin to another side or resistor on PCB
in the new box schematics the CLK signal has excessive current and becomes sensitive to interference.
therefore, when connecting via ISP, the following rules must be observed:
1) the length of the wire CLK/CMD/Dat0 should not different more than 1-2cm.
2) GND wire should
not be thin