Project14 | Build Projects Using 7-Segment Displays!

RE: Project14 | Build Projects Using 7-Segment Displays!

embeddedguy — Tue, 24 May 2022 17:24:41 GMT

Want to build a GPS clock with seven segment display. But afraid of the fact that it might need quite a lot f GPIOs

RE: Project14 | Build Projects Using 7-Segment Displays!

javagoza — Wed, 18 May 2022 14:42:28 GMT

Last year I used four 7-segment displays for unusual use. I used them to monitor the detection of 20 graphic markers (ArUco codes) positioned in windows.
The project is coded in python for the Raspberry Pi 4 and both the schematic and the code can be found at

Window Opening Monitor with ArUco - Final device and

Window Opening Monitor with ArUco - Multi-window driver 4x7 segment display

It was my first project with Python and the Raspberry so the project and code may be over-engineered.

I find them very versatile, it seems that time does not pass for them. I will find time to collaborate with a small project.

RE: Project14 | Build Projects Using 7-Segment Displays!

Workshopshed — Mon, 02 May 2022 18:37:38 GMT

Not 7 segment but 14 segment displays were used in my FizzBuzz game - community.element14.com/.../episode-490-diy-raspberry-pi-pico-fizz-buzz-multiplication-game if anyone needs to drive a lot of segments then a similar technique to this can be used.

RE: Project14 | Build Projects Using 7-Segment Displays!

misaz — Thu, 28 Apr 2022 21:01:27 GMT

I have idea which I never realized and I started thinking about it again. I want to make simple DIY digitaly controllable DC/DC Stepdown based power supply. Unluckily I never found enough free time to design and make it but I think about it always when I need to power some component with some non-standard voltages for some reason.

In history I was researching how to implement digital control of DC/DC output and I found very interesting Maxim Application Note (https://www.maximintegrated.com/en/design/technical-documents/tutorials/8/818.html). They show how to control (not only limited to) DC/DC output voltage by DAC manupulating with converter feedback. So I want to make hobby PSU with MCU which will controll DAC and it will manipulate with buck converter feedback resulting to modify output voltage. My idea is that I will allow user to configure output(s) off-line using potentiometer and on-line via app running on computer and comunicating via USB with the board. 7-segment display I will use for oboard visualization of configured/real voltage and with integration of CSA possibly currents.

I was thinking and researching for multicolor 7-segment displays. I found some fully RGB, but they are expensive and large for my use. But I found some dual led (usualy red and green) which looks suitable to me. Note that using two colors (red and green) I can generate more than two colors (for exmaple I can create yellow by enabling both red and green leds at the same time). This would be interesting for highlighting some errors and warnings like overcurrent.

RE: Project14 | Build Projects Using 7-Segment Displays!

me_Cris — Wed, 27 Apr 2022 17:39:34 GMT

The LEDs are beautiful, they attract attention, we just need to find an optimal circuit for use.

community.element14.com/.../multiplexed-4-digits-7-segments-display-module

RE: Project14 | Build Projects Using 7-Segment Displays!

rsc — Thu, 21 Apr 2022 17:55:34 GMT

I have an interesting sample box from the early 1990's, I'll have to check out which ones still work.

RE: Project14 | Build Projects Using 7-Segment Displays!

taylankol — Thu, 21 Apr 2022 08:04:10 GMT

I am the representer of IEEE in my university. Now I am trying to write IEEE RAS in our society room with my members. After finish our work I will upload the project[emoticon:44a8a53ad3364ea78a16c5a3229f75bb]