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I will try to check if the overheating is problem. I'll put one circuit in enclosure and one not and try them to see what will happen.
If the problem occurs with one in the enclosure I'll change their places and try again to see what we happen.
Anyway thanks for help.
Yes 470ohm were to hot(I'we calculated them wrong) but then I replace them with 910ohm 0.6W
and I still have problem with heating of the resistors, less than with 470 but still to much.
And the circuit is in enclosure so you think that overheating can cause that kind of problems?
No,no transistors base are connected to output of IC5 and it's uln2803 (sorry for bad labeling of circuits on the schematic).
ULN2803 sink the current from base of transistors so I think that is OK, unless...
sub function Button(dim byref port as byte, dim pin, time,
active_state as byte) as byte
Returns 0 or 255.
Function eliminates the influence of contact flickering upon pressing a button
(debouncing).
Parameter port specifies the location of the button; parameter pin is the pin
number on...
I have problem with my project. The schematic is presented in attachment.
This electronic circuit is for 5-digit seven segment displays (made from LED).
Selecting the digit that should be changed is made by pressing SET push button
and the digit that is selected start blinking. Then using...
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