Ciro Santilli's hardware / ELEGOO Upgraded Electronics Fun Kit

2022-10 ELEGOO Upgraded Electronics Fun Kit www.elegoo.com/products/elegoo-electronics-fun-kits-4-versions Manuals:

Breadboard power supply module MB‐V2:

TODO center positive or center negative?

Does not come with AC adapter, getting this one: www.amazon.co.uk/dp/B08ZN476FW output: DC 9V 1A Power Supply Adapter, Plug 5.5mm x 2.1mm, Center Positive,B rand: Security-01, input: AC 100-240V 50/60 Hz, Cable length: 1.8m

LEDs:

20 mA appears to be the typical operation. So with the 2.0 V drop on 5 V power we want a resistor such that:

for the max 50 mA we would instead have 60 Ohms