Easy 7-Segment Displays

RE: Easy 7-Segment Displays

DAB — Sat, 07 Jan 2023 19:26:18 GMT

Nice project.

I remember when the first 7 segment displays arrived.

They were so useful for sending status messages without a full I/O terminal connected.

FYI, you can also used smoked plexiglass to filter the LED's if they are too bright.

RE: Easy 7-Segment Displays

scottiebabe — Sat, 07 Jan 2023 15:28:31 GMT

Excellent work! I will have to look into these ND4 filters, thanks for sharing! Perhaps you could add a small note saying this is for a common-cathode versus common anode. Or perhaps have the common rail jumper selectable from gnd and 3v3 if you replace the npn with a pnp.

RE: Easy 7-Segment Displays

javagoza — Sat, 07 Jan 2023 12:31:02 GMT

Very good PCB layout. I'm trying to learn how to do PCB layouts. Just now I was starting my first design to have a PMOD module with two 4x7 segment displays for use with the Digilent Arty S50 board.

I'm using EasyEDA.

RE: Easy 7-Segment Displays

genebren — Sat, 07 Jan 2023 01:20:17 GMT

Very nice PCB design. I can see that this could be very helpful to people wanting to try this out.

In college I build a digital timer based on 7-segment displays and BCD counters. Back at that time I used a lot of surplus/reclaimed parts and built PCBs using resist pens and acid bath. This design looks so much cleaner!

RE: Easy 7-Segment Displays

dougw — Fri, 06 Jan 2023 22:47:22 GMT

The filter makes a huge difference. Where do you get ND4 filters?