It is extremely painful to program the Blinky Grid. Regardless the delay I am using (500ms or more) I get the leds 2 and 3 flashing before completing the program. I am only able to make it work with my iPhone or iPad (no PC or laptop display seem to be working). It works only 1 out fo 20 attempts.
Is there any other way to program the Blinky Grid? Should I modify my circuit or replace components?
I really like this project as it was my daughter’s (10 year) first soldering project and she did a great job.