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Fun Halloween Decorations video from Crazy Couple DIY!See the full write-up here on Hackster.ioWhen the full moon is shining and the wolves are howling, it’s time for Halloween’s spooky spectacle. The snickering grins of jack-o’-lanterns glow from lit porches. Kids skip down the block in spooky costumes, carrying bags full of candy and shouting “Trick

Which is better, less bits or more? MORE of course! The Adafruit AD5693R Breakout Board is a 16-Bit DAC with I2C Interface and temperature compensated 2.5V internal reference for a compact high-precision output. We break out the ADDR/A0 pin so you can connect two of these DACs on one I2C bus. Works with both 3.3V

Mike Rankin posts about making an ESP32 stock tracker using a 2.4” LCD display and the free Finnhub API for getting the data. This project was created to monitor multiple stock and crypto prices throughout the day without having check on my phone. I’ve seen a few versions on Kickstarter that monitor just one at

This project provides a substitute for a Vacuum Fluorescent Display (VFD) on a kitchen range that had become difficult to read with age (these displays typically begin to dim after 10 years or so). Dan Ellis’ solution is to mirror the intended VFD display on a separate 128 x 64 pixel backlit LCD display.The project uses

“The Imagination Machine, Version 2”, is a motion-sensing light sculpture made from a reclaimed airplane wing. The wing is divided into 2 parts, each with their own artist-programmed circuit boards.Two Adafruit M4 Express microcontrollers run around 35 pages of Arduino codes each, which sample 4 PIR motion sensors, and run multiple light programs on the

Revisiting one of our favorite Halloween projects, published by Scott N Miller back in 2018 on Hackster.ioMiller uses a bunch of Adafruit products, woodwork, and more to create the ultimate Halloween candy dispenser! Check out more details here.Be the coolest house on the block for Halloween with the Candy Machine. Trick or treaters can pick

Evan Allen was looking to build a robust circuit board to connect Sega Genesis controllers to arcade game PCBs.The board is based on the ATmega328, common in older Arduino boards. It uses an MCP23018 as an open drain I/O expander to simulate mechanical buttons on those lines connecting to ground.You can read the details in

AarduinoGameConsole is a minimal solution to create audio and video with an Arduino Nano. GitHub user c0pperdragon writes: I wanted to build a game console into the case of a small USB game pad (a NES controler look-alike). To make the work a challenge, I wanted to only use an Arduino Nano clocked at 16

The HUSB238 USB PD sink chip is neat in that you can either use jumpers (really, resistor selection) to set the desired PD voltage and current or you can use I2C for dynamic querying and setting. We’ve built a nice Adafruit USB Type C Power Delivery Dummy Breakout board around the HUSB238 to make it

Justin Miller writes on Mastodon about making an Arduino-based project to switch the polarity on an electromagnet for the Oregon Museum of Science and Industry. Switching inductive loads like this cannot be done by a microcontroller directly, so Justin is using a TI SN754410 quad half-H bridge chip to alternate the magnet’s polarity.Oscillating the electromagnet

The International Space Station (ISS) Mimic project is developing a 3D printed model of the International Space Station that uses the actual ISS live telemetry to mimic the actual positioning of the ISS solar arrays and radiators! The team is also developing tools to visualize all of the ISS public telemetry in informative ways!The telemetry

I2Cwrapper enables you to connect peripherals without dedicated I2C interface like stepper motor drivers, TFT-displays, sensors, etc. to an I2C-bus. It uses an Arduino-compatible device which acts as an I2C target device and “translates” between the I2C-bus and the non-I2C peripheral.To do so, the IC2wrapper framework “wraps” library function calls and return values and transmits them

Earth Moon Model (EMM) is a tabletop digital art project by Elliot Barlas that combines a Raspberry Pi computer with sensors and actuators to create a realistic model of the Earth and the Moon in their orbits. EMM can orient the Earth in its orbit and rotation and the Moon in its orbit at any

What’s Metro-shaped and has an ESP32-S3 WiFi module? What has a STEMMA QT connector for I2C devices and a Lipoly charger circuit? What has your favorite Espressif WiFi microcontroller and lots of memory for your next IoT project?That’s right – it’s the new Adafruit Metro ESP32-S3! With native USB and a load of PSRAM, this board is

A new guide in the Adafruit Learning System: Adafruit Metro RP2040 by Kattni RemborChoo! Choo! This is the RP2040 Metro Line, making all station stops at “Dual Cortex M0+ mountain”, “264K RAM round-about” and “16 Megabytes of Flash town”. This train is piled high with hardware that complements the Raspberry Pi RP2040 chip to make

This TFT display is big (2.8″ diagonal) bright (4 white-LED backlight) and colorful (18-bit 262,000 different shades)! 240×320 pixels with individual pixel control. It has way more resolution than a black and white 128×64 display. As a bonus, this display has a resistive or capacitive touchscreen attached to it already, so you can detect finger

Piezos make noise when you put an AC voltage across them: and the bigger the voltage used the louder they are. We found the nifty PAM8904, which is an amplifier specifically designed for driving piezo elements. We whipped up a quick breakout in our 2mm JST-PH STEMMA form-factor to make it easy for anyone who

Arduino recently received $22m in funding (see our previous post), and they went back for more: a gigantic $34m in series B VC funding announced today.Congrats to Arduino and their team! This is now the biggest success story (by some definitions) of an open-source hardware company going “big.” With $54m in funding, the questions later

Neat build from Arnov Sharma that includes our NeoPixel Ring – 16 x 5050 RGB LED with Integrated Drivers.Made a cone-shaped RGB Lamp from scratch, The lamp consists of WS2812 LEDs that are controlled by an XIAO MCU.See more details on Hackster.io

New video! One of the big tasks that Ladyada still has to spend a lot of time on is writing Arduino libraries for all our devices and sensors, particularly all the I2C & SPI chips out there! These ICs use register maps and sub-byte addressing to set dozens of configurable knobs and switches, and a

Scott W Harden looks into storing sounds in a microcontroller, starting with the very diminutive ATmega 328P on the Arduino Uno R3.Reading numbers from a speaker is an interesting and simple alternative to displaying numbers on a display, which often requires complex multiplexing circuitry and/or complex software to drive the display. This page describes the

This board has a 15 pin D-Sub socket port, that you can plug any classic PC joystick into. Onboard is a ATtiny816 helper chip that acts as a I2C peripheral using our ‘seesaw’ library. Two STEMMA QT ports mean you can plug this board in using a 4-pin JST SH cable to any microcontroller or

Resistive touch screens are incredibly popular as overlays to TFT and LCD displays. This breakout board features the TSC2046, which has an easy-to-use SPI interface available to read the incoming data from the touch screen. There is also an interrupt pin that you can use to indicate when a touch has been detected to your

Mark W Kiehl was looking to build a project monitoring six thermocouples on an aircraft. The requirements: Read up to 6x K type thermocouples Display temperature readings and indicate visually if any are lower or higher than normal. Daylight readable display. 12 VDC power input The circuit was designed using an Adafruit M0 Basic Feather

A new guide added to the Adafruit Learning System: Adafruit Feather RP2040 RFM95This is the Adafruit Feather RP2040 RF95 LoRa Radio. We call these RadioFruits, our take on a microcontroller with a “Long Range (LoRa)” packet radio transceiver with built-in USB and battery charging. It’s an Adafruit Feather RP2040 with a 900MHz radio module cooked in! Great for making wireless

The JECCbot mini is an outdoor robotics platform intended for participation in contests like Robotem Rovne, Roboorienteering, Robotour, or for general robotic experiments. It has mounting positions for Arduino Uno and Mega size boards.The chassis is 40 cm long and 20 cm wide.The whole robot with ultrasonic sensors is, depending on the wheels, about 45

This week’s EYE ON NPI (video) is a new spin on an old familiar classic, it’s Arduino’s UNO R4 Minima and R4 WiFi Boards, now in stock at DigiKey for folks who want a 5V microcontroller board with classic UNO-compatibility but a ton more speed, flash and RAM!The UNO R4 comes in two flavors, the

Check out the latest tutorial from Erin St Blaine on the Adafruit Learning System. She built a dress using NeoPixel LEDs and Arduino code by Phil Burgess: the amazing Oozemaster 3000 code. This code does a mind-blowing job of mimicking the way water flows, oozes, and drips, so Erin’s dress creates the illusion that water

John Graham-Cumming discusses revisiting a Pong project developed in 2011. At the time, composite video televisions were quite common. On getting a new television with only HDMI input, the Arduino Pro-based hardware didn’t generate the right signals.The post revisits the methods used to generate composite PAL video using only two resistors and two digital pins.

Michael Klements on the DIY Life blog posts about using an Arduino Uno R4 to control a 3D printer hotend in printing plastic recycled from PET plastic bottles.I’m doing this as the first part of a project, working towards building my own version of a PET bottle recycler to produce filament for my 3D printer.

The Audio BFF is designed to fit onto the back of any QT Py or Xiao board. Onboard is a MAX98357 audio amplifier and picoblade-compatible connector for plugging in a 4 or 8 ohm speaker. We use A1 for the audio data, A2 for wordselect clock, and A3 for bitclock. The SD card connects over

Cool project from Darren Shen and Evelyn Shen up on Hackster.io.We love how the students decided to develop a project around an issue that’s important to their daily lives.As high school student athletes, we as siblings decided to create a smart lawn care system that is able to detect the fields’ temperature and conditions, including

The I2C Quad Rotary Encoder breakout allows you to read up to 4 encoders for big builds with lots of twisty interfaces. You can solder in any four ‘standard’ PEC11-pinout rotary encoders with or without a push-switch. The onboard microcontroller is programmed with our seesaw firmware and will track all pulses and pins for you

Neat project from diy-projects-lab up on electricmaker.io.Hi beloved readers in this project I will show you how to make this Small Desk Clock with Weather Station This is a step-by-step article, I will guide you through the process of creating your very own desk clock using a Mini LCD display, Wemos D1 Mini microcontroller, lithium-ion

A really nice ChatGPT terminal project running with arduino. Sent in by Programming Electronics Academy. Watch the vid and checkout the full details here! Can you integrate the power of a chatGPT terminal into your own Arduino projects? I don’t mean using chatGPT to help write your code, I mean incorporating the textual responses from

Amp up your QT Py with this BFF!Our QT Py boards are a great way to make very small microcontroller projects that pack a ton of power. Now we have the Adafruit I2S Amplifier BFF, which provides a way for you to add an I2S 3 Watt amplifier, for high quality audio playback, that can

Do you think this is a game? It is now!Make a game or robotic controller for any I2C microcontroller or microcomputer with this tiny Adafruit Mini I2C STEMMA QT Gamepad with seesaw breakout board. This design has a 2-axis thumb joystick and 6 momentary buttons (4 large and 2 small). It boasts a STEMMA QT connector

On Workshop Nation, Thomas turns an Alexa Echo into a more characterful robotic assistant using an Arduino, a tiny, old B&W CRT monitor as a mouth, and Will Cogley’s animatronic eyes. You haven’t lived until you’ve seen a retro, cyberjunky robotic head recite the “Tears in the Rain” soliloquy from Blade Runner.

Now we have a way for you to add a small, colorful, and bright display to any project using one of our tiny QT Py boards. This BFF has an 18-pin “EYE SPI” standard FPC connector with flip-top connector. This is intended to be a sort-of “STEMMA QT for displays” – a way to quickly

We often get folks asking how to get NeoPixels working on some OrangeBananaOnionRockchipAllWinner Pi type board, given we have our Blinka library that provides support for CircuitPython libraries including the NeoPixel library. A quick solution is this seesaw-based NeoDriver board here: send it the NeoPixel data you want to write over I2C and it will

The Feather P2040 Prop-Maker: an all-in-one combination of the Feather RP2040 with a Prop-Maker FeatherWing with a few tweaks based on feedback from expert prop-builders. This board has an I2S amplifier, terminal block for NeoPixels, digital input/output and speaker output, header pins for a servo motor and an LIS3DH accelerometer. Build your next prop with

Jepler has posted up a new guide that shows how to create an emulator for the 8-bit CP/M operating system. Relive the glory days of computing before MS-DOS by coding up Z80 assembler programs, or just Zork & Chill. Because video generation & USB keyboard support are built in, this project is fully usable without