BornachIn Techmoan's latest video
https://youtu.be/3-UMs5kvNVQ?t=13m56s
At 13:56 he is reluctant to buy a handheld 50/60Hz strobe light for US$75 and finds a similar "homemade flashy box thing" for £20
Question is what components are in the $75 version compared with the £20 DIY version?
A microcontroller, clock crystal, LEDs with driver circuitry?
