![]() ![]() ![]() This approach is taken because I currently do not have any seven-segment decoder chip but still want to see if it will light up. When I get my hand on some decoder chips I will revisit this setup. This seven-segment display has a common anode and one cathode per segment LED. I hope I am not mixing up the anode and cathode words there but what it means is that I am connecting positive (+) 3V to the anode pins. There are two anode pins and it seems to not matter at all which one I use, so I connect 3V via a 365 Ohm resistor to both of them. The anode pins are located in the middle of the top and bottom row of 5 pins, that is pin 3 and pin 8. ![]() The seven-segment display used here does not seem to require very much current at all to light up. Unfortunately I have no manufacturer information or model number of the display so it is hard to look up a datasheet.Įight pins are unconnected so far. These eight pins, each turn a segment LED if you connect that pin to ground. That feels a bit awkward since I want to be able to turn the segments on using the STM32 MCU. ![]()
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