rascupanamuha
Member
I have connected 8x8 dot matrix to the breadbord with 2x 2803, and with 2x hc74595. That didnt work
And i have fiigured out why. When input on ULN2803APG is 5V, output is only 0.65V, and for matrix it should be 3V i think.
When i tried to connect only single ULN2803APG this way: PIN 1 and 10 to +5V, and PIN 9 to ground, output is also 0.65. Isnt it too low?
And i have fiigured out why. When input on ULN2803APG is 5V, output is only 0.65V, and for matrix it should be 3V i think.
When i tried to connect only single ULN2803APG this way: PIN 1 and 10 to +5V, and PIN 9 to ground, output is also 0.65. Isnt it too low?