#STEMMAQT

[adafruit]

The Raspberry Pi 500 Desktop and Monitor debut, alongside a 512GB Raspberry Pi NVMe SSD for ample storage. A snap-on enclosure for the USB/DC/Solar Lithium Charger, LED filaments in fun shapes, and the A4988 Stepper Motor Driver for motor control https://adafruit.com/new

[how2to18]

via Adafruit Industries – Makers, hackers, artists, designers and engineers! https://ift.tt/358HUVu

[adafruit]

Trying to design a great WLED board 🌈🦄🦃

While waiting for the turkey to finish brining, we're designing a board for using WLED - and we want to make like the bestest board in the whole world.

Our resident mermaid, firepixie

, makes a lot of projects with WLED, and she loves it! So, how can we make something that will be powerful but not too bulky? Here are some things we're thinking about as the design starts to congeal like cranberry sauce:

Power via USB Type C PD with a slide switch that selects between 5, 12, and 20V (24V pixels can usually run fine at 20V) OR via a 2.1mm DC jack. With ideal diodes, it's good for up to 5A from either.

ESP32-Mini module with built-in or optional wFL antenna port. The classic '32 has broad support, even if we'd prefer the 'S2 or 'S3.

There are three output signal terminal block sets, with power and ground for each. They'll be level-shifted to 5V.

Built in I2S microphone (we're still pondering this one).

Stemma QT I2C port to connect external sensors/OLEDs/etc.; separate analog/digital input JST port.

1.3"x1.75" / 33mm x 45mm size with mounting holes.

Anything we're missing, anything that's extraneous?

[adafruit]

We designed and prototyped an RP2350 Metro a few months ago, and it worked OK, but we were really short on pins, which meant a lot of annoying compromises - so we ended up only fabbing the RP2350 Feather to start. With that design flying off the shelves, It's time to revisit the Metro. We wanted to jam-pack this design, and with the extra GPIO on the B we have plenty of peripherals: the 22-pin HSTX for DVI output, Stemma QT port, NeoPixel, JST 3-SH SWD debug port, 16MB flash, an extra spot for PSRAM, MicroSD card with SPI or SDIO connections, and 5V buck converter that can give us 2 Amp easily, which we'll need since we also have a USB Host port pinout for connecting USB peripherals. We even managed to get a couple of niceties like switchable power for the USB host power, a USB boot button as user input, and an SD card detect GPIO.

[adafruit]

Got lots and lots of solenoids?

We were chatting with a customer and realized we need a better solution for customers with many solenoids or other high-current on/off loads. This breakout will make it easy to control and power many inductive or high-current loads. An mcp23017

https://www.digikey.com/short/nf4pn2rc

expander over I2C provides 8 output pins, each connected to an AO3406 N-Channel FET

https://www.digikey.com/short/rh398zbh

with a 1N4007 flyback diode.

https://www.digikey.com/short/343h9890

Terminal blocks allow for quick wiring to power and each high current output, including one chunky block for the power input. The other 8 expander I/Os are exposed if you want buttons or simple LEDs. The breakouts have stemma QT for fast chaining/control over I2C.

[adafruit]

New this week! 🌡️ Adafruit LPS28 (LPS28DFW) Pressure Sensor - STEMMA QT / Qwiic, and the 🔴🟢🔵 Adafruit Pixel Shifter - For Addressable LEDs.

[adafruit]

🚨 New This Week at Adafruit! 🚨

🌟 Adafruit INA3221 - Triple 0-26VDC, ±3.2A Power Monitor - STEMMA QT / Qwiic 💼 Engineer Professional Silicone-Tip Solder Sucker ⚡️ USB Type C PD to 5.5mm/2.1mm Barrel Jack Adapter - 20V 🔌 USB C to USB C Cable w/ 100W Watt Display - 2m Black Woven

Shop now! 🛒 https://adafruit.com

[adafruit]

BU9796 prototype finally comes to light ✨🔧🖥️

We covered the BU9796 a loooooooooong time ago on the Great Search while looking for an I2C LCD segment driver ...

but sadly, we never got around to making that breakout board. Til' now! This one features the FS series of the chip, which has some more segments: in this board, we expose 4 common and 18 segments to keep the board from getting too big. This chip runs at 3V or 5V, so it should be easy to use with any device. We still need to figure out what VLCD connects to - some parts of the datasheet say VDD, and some say VSS, so we left a jumper on the back. That way, we can connect it correctly when we are more awake. Stemma QT makes this a plug-and-play driver for just about any micro! Coming soon…

[adafruit]

New at Adafruit this week! 🔧✨ Check out the iFixit FixHub - Power Series Smart Soldering Iron, the Adafruit CP2105 Friend - USB to Dual UART, and the star of the week: Adafruit VCNL4200 Long Distance IR Proximity & Light Sensor - STEMMA QT/Qwiic! 🌟

[adafruit]

USB2422 configurable USB Hub chip

The Microchip USB2422 is kinda neat, its a low cost USB hub with EEPROM you can connect to I2C to configure. We thought it would make a nice little breakout for whenever you have a USB port but you sorta wish you had two! Maybe even embed in some hardware! We just made a couple USB hub breakouts with the CH334F ...

but this board might be nice if you want more configurability & control: the stemma QT connector on the end is what you can plug into to program it. we designed rev A of this board in 2021 and then it got slammed by part shortages, now its back in stock so we can revisit this design!

[adafruit]

PCB of the day! Adafruit I2C Stemma QT Rotary Encoder Breakout with NeoPixel - STEMMA QT / Qwiic 🔧🔄🎛️

Rotary encoders are soooo much fun! Twist them this way, then twist them that way. Unlike potentiometers, they go all the way around and often have little detents for tactile feedback. But, if you've ever tried to add encoders to your project, you know they're a real challenge to use: timers, interrupts, debouncing…

This Stemma QT breakout makes all that frustration disappear - solder in any 'standard' PEC11-pinout rotary encoder with or without a push switch. The onboard microcontroller is programmed with our seesaw firmware and will track all pulses and pins for you and then save the incremental value for querying over I2C. Plug it in with a Stemma QT cable for instant rotary goodness with any microcontroller from an Arduino UNO up to a Raspberry Pi.

You can use our Arduino library to control and read data with any compatible microcontroller. We also have CircuitPython/Python code for use with computers or single-board Linux boards.

[adafruit]

Check out what's new at Adafruit! Adafruit HDC3022 Precision Temperature & Humidity Sensor with STEMMA QT / Qwiic compatibility. iFixit FixHub - Power Series Smart Soldering Iron. LANA TNY - CH32V203 mini microcontroller board by PHVX BV. Adafruit Sunken USB Type C Breakout Board for reliable downstream connections & illuminate your projects with the Adafruit Double-Sided Emitter NeoPixel LED Strip with 120 LEDs per meter and the Adafruit NeoPixel Silicone Bead LED Strip with 180 LEDs per meter. Dive in at https://adafruit.com/new

[adafruit]

PCB of the Day! Adafruit AMG8833 IR Thermal Camera Breakout - STEMMA QT 🔥📸🔌

Add heat-vision to your project with an Adafruit AMG8833 Grid-EYE Breakout! This sensor from Panasonic is an 8x8 array of IR thermal sensors. When connected to your microcontroller (or raspberry Pi) it will return an array of 64 individual infrared temperature readings over I2C. It's like those fancy thermal cameras, but compact and simple enough for easy integration.

[adafruit]

PCB of the Day! The VCNL4200 has long-ranging vision 🔍🤖🛠️

The VCNL4200 proximity sensor https://www.digikey.com/en/products/detail/vishay-semiconductor-opto-division/VCNL4200/7394601 , which we found on last weeks The Great Search ---

can detect motion up to 1.5 meters away, and has an I2C interface that makes it an excellent match for a Stemma QT board prototype. Which is what we've got here! Note the IR LED requires an external P FET to drive it!

[adafruit]

PCB of the day! SGP40 Air Quality Sensor Breakout - VOC Index - STEMMA QT / Qwiic 👃🥛🌬️

sniff sniff … do you smell that? You no longer need to stick your nose into a carton of milk; you can build a digital nose with the SGP40 Multi-Pixel Gas Sensor, a fully integrated MOX gas sensor. This is an excellent air quality sensor from the sensor experts at Sensirion, with I2C interfacing, so you don't have to manage the heater and analog reading of a MOX sensor. It combines multiple metal-oxide sensing and heating elements on one chip to provide more detailed air quality signals.

[adafruit]

Final shield test for a Metro-shaped RP2040 🔬🚇🛠️🔌📲💾🚀📈✅🏭

We're testing out prototypes of a new Metro https://www.adafruit.com/search?q=metro RP2040 , while the 'classic Arduino shape' is not as popular these days with dev boards as it used to be, we like the roomy layout, with lots of socket headers, and plenty of space for accessories like a MicroSD card socket with both SPI and SDIO pinout, SWD debug port, Stemma QT, and 12V DC power port. our last test is always to plug in our 2.8" captouch TFT shield https://www.adafruit.com/product/1947 because it tests both SPI and I2C. this passes and since all the GPIO are accounted for, we just have to wrap up the silk and it's off to fabrication!