Ok so my group has this big project that we're doing and something went wrong with the 7-Segment LED circuit.We tried to display a number 4 to it,be connecting all the required pins directly to our voltage source.(Eg, pins representing b,c,g and f).
As our project involes connected circuits with a PLC,all of our circuits will be using the 24V DC power supply.So we constructed the circuit,obviously using resisters for all pins of the 7-segment display.We connected the circuit and it didn't light up.We went to google for 7-segment display circuits and found that alot of them used counters.Is there a way to make ours work without using a counter?We just want to show a number 4 when the current passes through the circuit.
Another problem we faced was that the power supply had no ground.So what should we use as a ground?
We also want to know what values of resistors we should use.We're currently using 2.7k ohm resisters but we're not sure if its okay.
Thanks for the help!![Big Grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
As our project involes connected circuits with a PLC,all of our circuits will be using the 24V DC power supply.So we constructed the circuit,obviously using resisters for all pins of the 7-segment display.We connected the circuit and it didn't light up.We went to google for 7-segment display circuits and found that alot of them used counters.Is there a way to make ours work without using a counter?We just want to show a number 4 when the current passes through the circuit.
Another problem we faced was that the power supply had no ground.So what should we use as a ground?
We also want to know what values of resistors we should use.We're currently using 2.7k ohm resisters but we're not sure if its okay.
Thanks for the help!