If you just want to measure light using the built-in facility then you just need a micro:bit.
When it comes to the choice of resistor to use, I have used a 2.2kΩ resistor here, but a 1kΩ or 10kΩ resistor will also work, but will change the range of readings.
BBC micro:bit
PRODUCT ID: 3530
The British Invasion is here! No, not music...microcontrollers! New to the USA is the newest and easiest way to learn programming and electronics - the BBC...
$14.95
IN STOCK
Small Alligator Clip to Male Jumper Wire Bundle - 12 Pieces
PRODUCT ID: 3255
For bread-boarding with unusual non-header-friendly surfaces, these cables will be your best friends! No longer will you have long strands of alligator clips that are grabbing little...
$7.95
IN STOCK
Half-size breadboard
PRODUCT ID: 64
This is a cute half size breadboard, good for small projects. It's 2.2" x 3.4" (5.5 cm x 8.5 cm) with a standard double-strip in the middle and two power rails on both...
$5.00
IN STOCK
Photo cell (CdS photoresistor)
PRODUCT ID: 161
CdS cells are little light sensors. As the squiggly face is exposed to more light, the resistance goes down. When its light, the resistance is about ~1KΩ, when dark it goes up to...
$0.95
IN STOCK
Through-Hole Resistors - 2.2K ohm 5% 1/4W - Pack of 25
PRODUCT ID: 2782
ΩMG! You're not going to be able to resist these handy resistor packs! Well, axially, they do all of the resisting for you!This is a 25 Pack of 2.2K...
$0.75
IN STOCK
