12VDC to 3.3VDC Stepdown DIY

[FlashGordon]

I am attempting to build a garage door remote for use on my motorcycle using a small remote and a handlebar mounted momentary push button switch. What I would like to do is remove the CR2032 battery and use a stepdown converter to wire directly into the motorcycle’s 12VDC system as I’ll be putting the remote circuit board inside the headlight housing. Is this possible and, if so, is there anything I should be concerned with such as heat or anything, and what protection can or should I add?

Appreciate the help and suggestions

 

[Moley]

You can pick up buck converters on ebay or amazon for a couple of pound/dollars that will do the job. An example would be On Ebay You will need a multimeter to set up the output voltage

 

[FlashGordon]

You can pick up buck converters on ebay or amazon for a couple of pound/dollars that will do the job. An example would be On Ebay You will need a multimeter to set up the output voltage

Yes, already have my eye on some through Amazon that will do 1.8A @ 3.3V. The description mentions heat, so I am assuming it would need some sort of sink to dissipate that. I currently have a Schottky Diode mounted in the bucket for a set of projector lamps that will go on when I have either the fog or driving lamps lit, and this is then mounted to the metal bucket using thermal adhesive after all electrical connections were heat shrink covered. Should I do the same for the converter?

 

[James]

remote controls like that only draw power when the button is pressed.
power draw is so small that i would not expect you to need a heat sink.