The Adafruit blog just posted a neat papercraft resistor calculator. If you haven’t yet learned the horribly offensive mnemonic for resistor color codes, now’s your chance to have a che… ...

Not Alexa. If you install the first resistor color code skill we mentioned, you can ask questions like “Alexa, ask resistor color codes what is the code for 220 ohms?” ...

This is part of Electronic Design's 70th Anniversary series. Color coding is a common way to provide easy identification of characteristics like the resistance value of a resistor.