Hi all, I wonder if theres a circuit for a 10 minute countdown timer using a nano. This is for a uV lightbox (for PCB's), prefeably using a LCD flourescent display, guess LED display would be acceptable.
I'm new to nano and their siblings in regards to programming, I did manage a PIC chip though, give me the inside of a telly or radio anyday... hi.
Thanks, Dave
Hello Dave, welcome to the forum.
Your question contains a mix of hardware and software questions.
If you go with an LCD then you would need to choose one of those from the many available. The I2C ones are fairly easy to use and connect to your project.
From a programming standpoint you would be using the millis function to build a countdown timer in your software - the code for which you will find on the forum in various places.
You will need some buttons also, to control your project. This leaves you with a lot of options too. Depending on budget and how fancy you want your display to look will determine your choice of hardware.
@xfpd where's the brain for that? I wonder if there is a three digit timer/controller sub-module that might be nice to know about what has been used in this design.
Similar to the little 3 digit voltmeters you can get, I use those all over the place.
Googling…
and after as much time as I can give it just now, I see lotsa devices that seem to use the same thing, but one product that looks largely identicaml but has a visible microprocessor, which I now think must be if not integrated with the display, hiding underneath in the one you found.
a7
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