Arduino 20w LED strobe with MOSFET - How to
** UPDATE **
You don't need the additional voltage regulator because the Digispark can handle 7-35v on the VIN pin. I originally built it for an Arduino Pro Mini which isn't so tolerant to voltage input.
Here it is!
Please bear in mind that I'm crap at instructional videos and this is only a guide on how to build them.
If anyone has any problems following the instructions, I'll do a schematic.
Digispark sketch can be downloaded from the following link.
https://drive.google.com/file/d/1MqRZ...
MOSFETs are IPP80N06S4L N-Channel from eBay
https://ebay.us/xchBw9
Also available from Sparkfun
https://www.sparkfun.com/products/10213
Digispark is from eBay
https://ebay.us/y6uvJM
LEDs are from BangGood
https://www.banggood.com/custlink/DDv...
Any LED will be ok as long as it's tolerant to the voltage you're supplying.