RE: NexGen: CDU Pinlite Displays: Final Word !! REDACTED!!!!

DAB — Sun, 21 Feb 2021 19:06:46 GMT

The data update rate can usually be slower depending upon how fast you need to see it change.

As long as you can tolerate some lag, updating once a second is usually good enough.

When I was updating a heads down helicopter display, the pilot only glanced at it about once a second while flying.

DAB

RE: NexGen: CDU Pinlite Displays: Final Word !! REDACTED!!!!

michaelkellett — Sun, 21 Feb 2021 09:24:38 GMT

The MAX7221 chips (and the similar 7219) are nice but pricey.

A while ago I noticed that you could buy a Chinese 8 digit display with LEDs and MAX7219 for less than the price of the offical MAX chip.

I bought some complete displays and 50 chips. The displays work OK but in my application they seem to lose the data every now and again (fixed by having a regular chip reset every 120 seconds).

The chips were dead cheap and came loose in a poly bag - at about £0.25 each I wasn't that suprised.

If funds are short they are worth considering (not for anything critical of course !).