OpenSprinkler › Forums › Hardware Questions › DIY Kit Assembly Questions › SOLVED! Firmware flash OK, but LCD displays rectangle box & stations not working › Reply To: SOLVED! Firmware flash OK, but LCD displays rectangle box & stations not working
August 9, 2015 at 2:19 am #39776
For the above analysis, it seems all the ports are working correctly (at least partially).
I also checked each pin to GND, I found Pin 25 (PC6), Pin 41 (PB1) and Pin 43 (PB3) are grounded.
PB3 and PB1 are connected to 74HC595D, PC6 is connected to LCD, could these be the problem?