Desk of Ladyada - time for some newNEWnEw designs!
119Desk of Ladyada - time for some newNEWnEw designs!
We designed a bunch of boards this week, let's take a look at what got spun up: With Si5351's back in stock and available, we have QTified the breakout board for this popular clock generator.
We're also QTifying the ADT7410 and EYESPIifying the 1.8" and 1.54" TFTs. The TPS61040 is a fair replacement for the FAN5333, so there's a mini breakout for that The PiCowbell proto has been patiently awaiting me to look up the default I2C pins for the Pico in Arduino so we could make a rev B with stemma QT port in addition to an SMT right-angle switch Finally, a customer with an IR LED question prompted us to design a breakout board that makes it easy to add high-powered IR LEDs without soldering.
The Great Search - Boost converter OLED bias / FAN5331 replacement
https://www.digikey.com/short/1zdcf8mf
A few months ago we were forced to find a replacement for the FAN5333 constant-current LED driver (https://blog.adafruit.com/2022/08/02/the-great-search-white-led-strand-backlight-constant-current-driver-fan5333-replacement-thegreatsearch-digikey-adafruit/) - well, now we have to find a replacement for it's sister - the fixed voltage boost converter FAN5331 (https://www.digikey.com/short/bzrmmh08) which has gone "end of life" on us. A real tragedy: we absolutely loved this simple SOT-23-5 chip which could take 3-5VDC in and give up to 20V out with a built in 1A switch, only a small inductor and diode needed! We use this for many of our OLED displays and other devices that need a bias voltage of 12-18VDC. Let's see if we can locate a pin-compatible, functionally-similar equivalent that's in stock.
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