3 ms·
One very nice thing, dependent on use case of course, is that 7 segment displays are very simple to wire up and use. They can be easily used for analog circuits
by 486sx33 2y ago
One very nice thing, dependent on use case of course, is that 7 segment displays are very simple to wire up and use. They can be easily used for analog circuits, without any digital micros at all if needed.
You can just grab all the pins to say 8 and wire them to vcc and it works. They are just led lights, arranged a particular way
You can even drive them with something like a 555 timer or other 74 series ICs if needed to make basic and very robust monitoring systems. They are very tough, can’t easily break or be destroyed by heat or cold
They have a place.
- 486sx33 2y agoThis is an example with a 555 and a cmos IC, but 74 series TTL IC could be used too. Personally more comfortable breadboarding TTL circuits myself but that’s just because I’m old https://circuitdigest.com/electronic-circuits/555-timer-seven-segment-counter-circuit https://circuitdigest.com/electronic-circuits/555-timer-seve...
- whartung 2y agoJust reminds me of stumbling across a Hex -> Segment LED decoder chip. The chip was $17. A RPi 0 is (was) $5. Just one of those "Not in Kansas anymore" moments.
- Rinzler89 2y agoHow much do the software development, and sw bugs in production of doing it on the RPi cost you vs the battle tested hardware hex decoder? Just because you can do something on a RPi doesn't always mean you should.