#gpio

[adafruit]

Solenoids go clicky-clacky 🔩🔊🤖

We're testing out an I2C-to-solenoid driver today. It uses an MCP23017 expander. We like this particular chip for this usage because it has push-pull outputs, making it ideal for driving our N-channel FETs and flyback diodes. The A port connects to the 8 drivers, while the B port remains available for other GPIO purposes. For this demo, whenever we 'touch' a pin on port B to ground, the corresponding solenoid triggers provide an easy way to check speed and power usage.

[pcbway]

QuinLED-Quad

#Shared Projects

The QuinLED-Quad, version 1 revision 6 is a 4 channel ESP32 based based PWM WiFi LED dimmer which integrates natively with Home Assistant. Some of it's unique properties are that it has 4 independent channels with high current handling and PWM frequencies up to 300.000Hz making it suitable for video work.

Works with any analog LED strips or COB LEDs up to 28v and is able to drive 4 individual LED strips or 1xRGBW strip or any other configuration you wish to make. Also provides 2 broken out GPIO pins and an onboard temperature sensor.

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- Learn more: https://bit.ly/3285G1F

- Share your project in PCBWay: https://bit.ly/3600kXy

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[codingheroesonline]

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We love everything LED!! #Repost @e_smartlabs with @make_repost ・・・ #TogglePin #AtmelStudio #AtmelStart #CuriosityNano #Microchip #Atmega4809 #Leds #Avr #ToggleLevel #MCU #Digitalalogic #EmbeddedSystem #Electronic #GPIO #codingheroes #stemeducation https://www.instagram.com/p/Br1oIb2HUQ7/?utm_source=ig_tumblr_share&igshid=9murvd7soyzs

[adafruit]

mini Sparkle Motion prototype - a tiny, fully-featured WLED board ✨🔌📏💡🌈

We're doing a lot of serious testing with our WLED mega-board, code-name Sparkle Motion .

Adafruit Sparkle Motion - All-In-One WLED and xLights Board

Coming soon! We're designing a board for using WLED - and we want to make like the bestest board in the wholeworld. Our resident me

While doing some holiday lighting projects, we also wanted something slim enough to slip into any design. It still uses an ESP32 for the best support, with USB-serial programming, 5A fuse, 5V level shifting + 100 ohm series resistors for pixel drivers, user/reset buttons, a user LED and onboard neopixel, JST SH analog/digital connector, QT I2C connector, 4 GPIO plus power/ground breakouts, and USB type C power/data input.

However, this version is made simpler and less expensive by dropping the DC jack and USB PD support: it's only for 5V strips if you want to power them directly (you could still drive 12V or 24V pixels, but you'll need separate power for them). Instead of a full set of terminal blocks for 3 signals, we only have two outputs, and they have to share the power and ground pins. It could also be used for a single two-pin dotstar LED setup. We kept the built-in I2S mic but dropped the on-board IR sensor - if you want an IR sensor, you'll be able to plug it into the JST SH port with a simple cable or solder it into the breakout pads.

The trade-off is that it's much smaller and slimmer, especially when no terminal blocks are soldered in by default: only 1.2" long x 0.785" wide (~1 sq in) x 0.3" thick vs. the original's 2" x 1.3" (2.6 sq in) x 0.55". To get it that small, we went 4-layer to give us a nice big ground and 5V plane in the middle and double-sided assembly. Coming soon.

[adafruit]

Metro RP2350 is wrappin' up testing ✨🐢

This week we got our Metro RP2350 boards

https://blog.adafruit.com/2024/11/11/metro-rp2350-now-with-bigger-better-rp2350b/

back and after fixing the pin direction and rerouting

adafruit on Instagram: "Metro RP2350 take 5 🔄🌟🤞 Sometimes mistakes are made in prototyping; that's why they're prototypes. The error in rev

241 likes, 0 comments - adafruit on November 26, 2024: "Metro RP2350 take 5 🔄🌟🤞 Sometimes mistakes are made in prototyping; that's why they

the whole thing, it came up and pretty much works perfectly! Just one component needed a swap - we were able to test all GPIO, analog inputs, MicroSD slot, PSRAM, LEDs & NeoPixel, user button, I2C/SPI/UART, aaand power supplies. The 5V supply is great, we got a nice clean 5V out at 2A+ from 12V DC in. The last thing to check is the HSTX port, which gives us DVI access, and it works, thanks to this festive turtle demo!

CircuitPython Turtle Graphics

This guide documents the new adafruit_turtle library to create awesome vector graphic designs on your PyPortal, PyBadge, PyGamer, and simila

We're aiming to get this into the shop before the end of the year, wouldn't that be smashing?

[adafruit]

Driving HUB75 RGB Matrices on Raspi 5 with PIO 💡😎

Since the latest release of 'piolib' we can do things like drive NeoPixels on any pin on the Raspberry Pi 5

CircuitPython Libraries on Linux and Raspberry Pi

CircuitPython is the best new way to code microcontrollers. But what if you want to run that same code on a more POWERFUL computer like a Ra

which rocks, and means we can tackle the next, more complex, project: driving HUB75 RGB Matrix displays

Wintertime can be rough in the city. The sky is gray. The weather is unpredictable. So slough off those seasonal blues with some&n

these require even MORE timing freakiness: using 10 pins, and 'manual' PWM means we have to constantly blit out the color dithering. Historically this was done with mmap'd memory to the GPIO controller bitbanging, which required a full core and could jitter depending on load. But now we can use the PIO peripheral! We can drive massive display arrays at high speeds and color depths using just about any pins. The future is looking bright 😎

[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]

A Compact Pi Compute Module Backpack 🍓🥧📸🎒

We used to stock a PiCam Module

PiCam Module for Raspberry Pi Compute Module 4

The PiCam Module is the mechanical solution to connect a 'standard' Raspberry Pi camera to a Raspberry Pi Compute Module 4 board, wi

that would plug into a Pi CM4 or CM5 - recently we went to restock it, but the vendor hasn't replied to our emails for many months. So, it could be a good time for us to design something that works similarly but with more capabilities. So we tasked Timon

timonsku - Overview

Open source hardware and software. timonsku has 119 repositories available. Follow their code on GitHub.

with designing something for us - we just said, "Make the best thing ya can," and he delivered! Check this board out that plugs onto the compute module and provides many great accessories: USB connection for bootloading/USB gadget, USB 3.0 host type A for CM5, micro HDMI, micro SD card for data storage on 'Lite modules, camera connection, and mount, two DSI connectors, fan connect, Stemma QT / Qwiic connection, and RTC battery. There's one shutdown button for CM5 and two GPIO buttons plus one LED. Timon's gonna try to add an EYESPI connector for our next rendering so we can get some I2C/SPI/PWM outputs easily. What do you think? We wanted to keep it compact and not too pricey (aiming for <$30 cost. We'll see if we can get it there) but were able to craft fairly complex projects in a small space.