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Digital Clock For Ashtray


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#1 WillCarter

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Posted 05 September 2017 - 09:51 PM

Hi everyone, I've started making digital clocks small enough for the ashtray, just need to make the casing look tidy now but it seems promising. They will have their own battery as otherwise they'd have to be constantly connected to the main battery which for obviously drain it. I'm currently testing how long the batteries will last and will post the results soon, otherwise I'll keep experimenting with different kinds of batteries. If anyone is interested then please let me know!

#2 Northernpower

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Posted 05 September 2017 - 09:52 PM

I could be interested depending on the design and price.

#3 WillCarter

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Posted 05 September 2017 - 10:00 PM

I'll keep you updated

#4 Northernpower

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Posted 05 September 2017 - 10:29 PM

I'll keep you updated

Please do.

#5 WillCarter

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Posted 06 September 2017 - 07:40 AM

I was using 2xAAA batteries and they lasted around 4 days before the clock died. The problem is that the clock has to stay on constantly or otherwise it will reset every time it is turned back on which is obviously a pain. I'll experiment with different battery packs and also look into using the car battery and a backup power supply for when the ignition is off. I'll also look into the car battery being connected to some kind of power reserve that can be charged and then used overnight or whenever the battery is off, this will probably be the best thing to do if I can get that to work. It may be while before I've tested all these ideas and find which one works best.

Edited by WillCarter, 06 September 2017 - 07:41 AM.


#6 Lt-SilverDragon

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Posted 06 September 2017 - 03:21 PM

Would the drain on the battery really be that bad if it was connected up to the car batt? Could you have it so the display isn't lit up when the ignition is off to reduce the drain?

I'd be interested in one if they look nice and are affordable. Personally if the clock only lasts a week on batt I'd rather have it hooked up to the car.

#7 WillCarter

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Posted 06 September 2017 - 07:08 PM

I'll have to have a look into how I'd keep the clock running turn the display on when the ignition is on. I'll let you know how I get on with that but that would definitely be something to look into, I'll also do a voltage test to see the effect on the car battery.

#8 Purplemini1972

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Posted 08 September 2017 - 02:33 PM

Could you not do a 12v with a battery back up?



#9 WillCarter

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Posted 08 September 2017 - 09:09 PM

Could you not do a 12v with a battery back up?


I'll look into the 12v charging the AAA batteries whilst powering the clock, that'll probably work best.

#10 BaronVonchesto

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Posted 10 September 2017 - 10:37 AM

any pictures?



#11 WillCarter

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Posted 10 September 2017 - 12:22 PM

any pictures?


I've only done a lego one so far, not even for the car, but it will give you an idea of the size of the clock itself.

Attached Files


Edited by WillCarter, 10 September 2017 - 12:23 PM.


#12 WillCarter

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Posted 10 September 2017 - 12:24 PM

Also I'm not really looking to make money off of this so if anyone else wants to have a go then type in c51 clock on ebay

#13 mr cooke

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Posted 16 September 2017 - 05:50 PM

What about a 9v PP3 battery with a resistor



#14 BaronVonchesto

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Posted 17 September 2017 - 05:32 AM

I dont quite see how this can be used as a clock for the ashtray



#15 WillCarter

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Posted 18 September 2017 - 08:41 PM

Afraid I haven't got an update for you, however I was wondering if something like this would fit in the ashtray. You could then use a lighter socket clock.

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