Tracker?

[NicolasH]

Its overkill but yes, that will be fine

Would this be better:

3A Mini DC-DC step down converter volt regulator 5V-23V to 3.3V 6V 9V 12V R.dr | eBay

1Pcs step down converter volt regulator. Output ripple: 30mV (when no load). Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item.

www.ebay.co.uk