EPISODE · Jul 25, 2021 · 31 MIN
Desk of Ladyada - Hot Summer Sunday Stemmas!
from Adafruit Industries · host Adafruit Industries
Woo it is sweltering, which means we got to stay in and do a bunch of engineering. This week we spent a little time finishing up some languishing boards - Stemma QT version of the SCD40/SCD41 and IS31FL3741 chips - we wrote libraries for both as well! We also are dealing with a massive SAMD51 shortage by redesigning some recent boards like the Matrix Portal to be S2 only (so at least there's only one chip to source!) The Great Search - BSS138 Dual N-Channel FET Alternative Replacement https://www.digikey.com/short/5hh9bz4w We use hundreds of thousands of the famed dual BSS138 n-channel FET in every one of our breakouts - we use them for I2C level shifting on our breakouts and QT boards. But, this ultra-jellybean part is suddenly...out of stock everywhere! No worries, lets show how to find a drop-in replacement so we aren't held up on manufacture. "Hot girl summer is a meme, originating with rapper Megan Thee Stallion, about feeling confident in who you are—and having fun and looking good while doing it. It often involves women posting selfies with summery swag and style using the caption (I heard it's) hot girl summer." - https://megantheestallion.com/ #adafruit #deskofladyada #thegreatsearch Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Adafruit on Instagram: https://www.instagram.com/adafruit Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------
What this episode covers
Woo it is sweltering, which means we got to stay in and do a bunch of engineering. This week we spent a little time finishing up some languishing boards - Stemma QT version of the SCD40/SCD41 and IS31FL3741 chips - we wrote libraries for both as well! We also are dealing with a massive SAMD51 shortage by redesigning some recent boards like the Matrix Portal to be S2 only (so at least there's only one chip to source!) The Great Search - BSS138 Dual N-Channel FET Alternative Replacement https://www.digikey.com/short/5hh9bz4w We use hundreds of thousands of the famed dual BSS138 n-channel FET in every one of our breakouts - we use them for I2C level shifting on our breakouts and QT boards. But, this ultra-jellybean part is suddenly...out of stock everywhere! No worries, lets show how to find a drop-in replacement so we aren't held up on manufacture. "Hot girl summer is a meme, originating with rapper Megan Thee Stallion, about feeling confident in who you are—and having fun and looking good while doing it. It often involves women posting selfies with summery swag and style using the caption (I heard it's) hot girl summer." - https://megantheestallion.com/ #adafruit #deskofladyada #thegreatsearch Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Adafruit on Instagram: https://www.instagram.com/adafruit Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------
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Desk of Ladyada - Hot Summer Sunday Stemmas!
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