- #1
Tom McCurdy
- 1,020
- 1
Hello all, you may remeber from past about the circuit I was working on to get a simple 7 segment display to work... we had to tangent from that for awhile but we are finally back...
I got frustrated with problems in the 5 bread board circuit with around 100 led's so I streamlined the circuit with my partner and it now contains the integrated circuits on one board. I am trying to figure out how to get this stupid seven segment LED to light up
Here is a diagram of what I currently have built- The 555 works and blinks the two leds, also the 8 other leds work and count... however the seven segment display does not work.
www.quantumninja.com/hw/Circuit.pdf
I am not sure what to do with the final leads for the seven segment display
the parts used are
555-integrated circuit
7490-integrated circuit *2
7447-integrated circuit
LN514rk seven segment display
http://www.alldatasheet.com/datasheet-pdf/view/PANASONIC/LN514RK.html
specs for seven segment display
if link doesn't work just search www.alldatasheet.com for specific parts to get spec sheets
I don't know what to do to make it work please help!
I got frustrated with problems in the 5 bread board circuit with around 100 led's so I streamlined the circuit with my partner and it now contains the integrated circuits on one board. I am trying to figure out how to get this stupid seven segment LED to light up
Here is a diagram of what I currently have built- The 555 works and blinks the two leds, also the 8 other leds work and count... however the seven segment display does not work.
www.quantumninja.com/hw/Circuit.pdf
I am not sure what to do with the final leads for the seven segment display
the parts used are
555-integrated circuit
7490-integrated circuit *2
7447-integrated circuit
LN514rk seven segment display
http://www.alldatasheet.com/datasheet-pdf/view/PANASONIC/LN514RK.html
specs for seven segment display
if link doesn't work just search www.alldatasheet.com for specific parts to get spec sheets
I don't know what to do to make it work please help!
Last edited by a moderator: