/diy/ - Do It Yourself

>>1506406
if you're running an ESP8266 you'll need 200mA or more output capability, i.e. 1W+ plus whatever you're trying to power with it
I see 25x25x12mm converters but they don't get much smaller than that
you might also have a look at
https://www.microchip.com/ParamChartSearch/chart.aspx?branchID=90251
and be prepared to roll your own. Pic potentially related

>>1506432
so you want an 8-wide 1-bit adder which is not an encoder
pretty sure there's no one-chip solution for that unless you build your own in a PAL or CPLD