https://youtu.be/NPpPVw-4qi8

For the most information, the CODE and more, check out the website article:

https://simpleelectronics.ca/an-i2c-address-scanner-for-your-desk/

The long and the short is that this PCB uses an RP2040 and an OLED and scans continuously for attached i2c devices and displays the address - perfect for scanning dubious devices from Aliexpress!

RP2040-Zero (or compatible):

Aliexpress: https://s.click.aliexpress.com/e/_c3frVqPd

Amazon (Canada): https://amzn.to/4mBsttp

Amazon (USA & Global): https://amzn.to/48v5VXC

0.96" OLED Display (I2C):

Aliexpress: https://s.click.aliexpress.com/e/_c4FMPfBh

Amazon (Canada): https://amzn.to/4pym19f

Amazon (USA & Global): https://amzn.to/4mzMhx8

(optional) 4-Pin & 3-Pin Headers Male:

Aliexpress: https://s.click.aliexpress.com/e/_c3w4opQf

Amazon (Canada): https://amzn.to/4gBvNDv

Amazon (USA & Global): https://amzn.to/3IonK07

(optional) 4-Pin Headers Female:

Aliexpress: https://s.click.aliexpress.com/e/_c44VEN1d

Amazon (Canada): https://amzn.to/3KjBidO

Amazon (USA & Global): https://amzn.to/3Ib8Bze

(optional) Jumper Cap:

Aliexpress: https://s.click.aliexpress.com/e/_c34cqMEF

Amazon (Canada): https://amzn.to/4gBNB17

Amazon (USA & Global): https://amzn.to/4pKms0j

(optional) AMS1117-3.3 3.3v Regulator:

Aliexpress: https://s.click.aliexpress.com/e/_c41q77Kr

Amazon (Canada): https://amzn.to/4nhxXuf

Amazon (USA & Global): https://amzn.to/42b01Hs

(optional) 0805 Capacitors 100nF:

Aliexpress: https://s.click.aliexpress.com/e/_c4bZ3vUT

Amazon (Canada): https://amzn.to/4pDUfIl

Amazon (USA & Global): https://amzn.to/4nE6nay

(optional) 0805 Resistors 4.7k:

Aliexpress: https://s.click.aliexpress.com/e/_c2yDTXFt

Amazon (Canada): https://amzn.to/3ImMF49

Amazon (USA & Global): https://amzn.to/3VwMndW

(optional) JST-SH 1.0mm Female (Stemma-QT / QWIIC):

Aliexpress: https://s.click.aliexpress.com/e/_c4nTBVin

Amazon (Canada): https://amzn.to/42KCf54

Amazon (USA & Global): https://amzn.to/3Waz7f7

(optional) 5mm O.D. x 4mm H x m3 Heat-set Insert (for case):

Aliexpress: https://s.click.aliexpress.com/e/_c3J6lGJN

Amazon (Canada): https://amzn.to/4mwc4GE

Amazon (USA & Global): https://amzn.to/4gDXV8Z

(optional) m3 X 10mm Screw (for case):

Aliexpress: https://s.click.aliexpress.com/e/_c4ntaKeL

Amazon (Canada): https://amzn.to/4nlKblM

Amazon (USA & Global): https://amzn.to/3IwyWrx

(optional) m2 X 6mm Self-Tapping Screw (for case):

Aliexpress: https://s.click.aliexpress.com/e/_c3K1W5v5

Amazon (Canada): https://amzn.to/4nidBkF

Amazon (USA & Global): https://amzn.to/4muZszi