Hi all.
I'm sure this project has been done to death already, so i know i'm not particularly breaking new ground or anything, but i have an interest in building a small project digital clock to replace an existing unit on a car.
I'd like to make it small enough to fit into the existing footprint area which the current clock fits in. I also have a desire to make it have the same sort of functionality as the existing one, but with one exception. Currently, the existing can only display in 12hr format. I'd like to make this switchable to be either 12 OR 24 hr format, or at the least, as a 24hr format only.
Other design criteria are:
A push button to advance HRS.
A push Button to advance MINS.
A voltage sense input to auto-dim the display with sidelights switched on within the vehicle.
With the ignition off, i'd like to switch off the display altogether, but without losing the clock setting. (This is most important, as one of the biggest design criteria i wish for my project, is to be as efficient as possible with regards to power drain from the battery whilst the car is parked up and not being used.)
Does anyone know of an existing circuit for this project, or can I use this thread as a "go-to" for help/assistance/advice for progressing this circuit?
Thank you!
I'm sure this project has been done to death already, so i know i'm not particularly breaking new ground or anything, but i have an interest in building a small project digital clock to replace an existing unit on a car.
I'd like to make it small enough to fit into the existing footprint area which the current clock fits in. I also have a desire to make it have the same sort of functionality as the existing one, but with one exception. Currently, the existing can only display in 12hr format. I'd like to make this switchable to be either 12 OR 24 hr format, or at the least, as a 24hr format only.
Other design criteria are:
A push button to advance HRS.
A push Button to advance MINS.
A voltage sense input to auto-dim the display with sidelights switched on within the vehicle.
With the ignition off, i'd like to switch off the display altogether, but without losing the clock setting. (This is most important, as one of the biggest design criteria i wish for my project, is to be as efficient as possible with regards to power drain from the battery whilst the car is parked up and not being used.)
Does anyone know of an existing circuit for this project, or can I use this thread as a "go-to" for help/assistance/advice for progressing this circuit?
Thank you!