Here are the voltages measured on all IC2 pins:
These voltages are measured when the USB cable is connected but the PC software EDU09 is not running.
1: 1.76V
2: 0V
3: 0V
4: -5.2V
5: 0V
6: 0V
7: -1.65V
8: 5.0V
On IC1 pins the voltages should be:
1: 0V
2: 0V
3: 0V
4: 0V
5: 0V
6: 0V
7: -5.2V
8: 0V
9: 0V
10: 0V
11: 0V
12: 0V
13: 0V
14: 0V
15: 0V
16: 5V
These voltages are measured when the PC software EDU09 is running.
Here are the voltages measured on all IC2 pins:
1: 1.65V
2: 0V
3: 0V
4: -5.2V
5: 0V
6: 0V
7: -1.65V
8: 5.0V
On IC1 pins the voltages should be:
1: 0V
2: 0V
3: 0V
4: 0V
5: 0V
6: 0V
7: -5.2V
8: 0V
9: 3.3V
10: 0V
11: 0V
12: 0V
13: 0V
14: 0V
15: 0V
16: 5V