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Learn how a potentiometer works: How a Potentiometer Works?
Aliexpress - 2pcs WTH118 DIY Kit Parts 2W 1A Potentiometer WTH118-1A 2W 470R 1K 2.2K 4.7K 10K 22K 47K 100K 470K 500K 560K 1M
$3.13
Aliexpress
eBay - Potentiometer Assortment Kit with Knobs 1K 2K 5K 10K 50K 100K 250K 500K 1M Nuts
$17.90
eBay
Banggood - 75pcs Rotary B-Type 1K-220K Ohm Linear Potentiometer
$18.25
Banggood.com
Amazon.com - 18pcs B1K B2K B5K B10K B20K B50K B100K B500K B1M Ohm Shaft Linear Potentiometer with Cap Kit
Amazon.com
Amazon.co.uk - Potentiometer - 5pcs 10K OHM 3 Terminal Linear Taper
Amazon.co.uk
Amazon.de - Potentiometer 100 KOhm
Amazon.de
Amazon.es - Potentiometer 100 KOhm
Amazon.es