What do you do if you want the convenience of MIDI but the warm tones of analog synths? Build a MIDI to CV converter of course! A QT Py RP2040 running CircuitPython with an MCP4725 DAC is used to convert MIDI messages to a gate output and 1V/oct output. 

In the NAU7802 Food Scale Learn Guide, you can build a food scale using CircuitPython, a NAU7802 STEMMA board and a strain gauge. In this guide, you'll take that project and connect it to Microsoft Azure to log the weight measurements over time with text alerts when the food runs low.

Add motion, direction, and orientation sensing to your project with this all-in-one 9 Degree of Freedom (9-DoF) sensor. This little breakout contains two chips: an ST LSM6DS3TR-C 6-DoF IMU accelerometer + gyro and an LIS3MDL 3-axis magnetometer. Together, they provide 9 degrees of full-motion data.

Use a QT Py ESP32-S2 running CircuitPython with a NAU7802 to build a food scale that's the perfect size for holding your pet's dry food. LED alphanumeric displays show the current weight.

Build your own Owl themed TV remote using CircuitPython

Add motion and orientation sensing to your project with this affordable 6 Degree of Freedom (6-DoF) sensor with sensors from ST. The 3-axis accelerometer can tell you which direction is down towards the Earth (by measuring gravity) or how fast the board is accelerating in 3D space. The 3-axis gyroscope can measure spin and twist.

There are a lot of IoT platforms out there, but if you want to build really big projects or run a business using IoT you'll need to use a platform that provides support for projects of that scale, like Microsoft Azure. This guide will walk you through how to get started with Microsoft Azure using a Feather ESP32-S2 TFT, a BME688 sensor and CircuitPython.

Build two different DIY solutions to the age old problem of how to speed control you Walkman with tape loops like an ersatz Mellotron.

Make a mini IoT smart mirror that displays weather information.

The ESP32-S3 has arrived in QT Py format - and what a great way to get started with this powerful new chip from Espressif! With dual 240 MHz cores, WiFi and BLE support, and native USB, this QT Py is great for powering your IoT projects.

This mono amplifier is able to deliver up to 2.5 Watts into 4-8 ohm impedance speakers. Inside the miniature chip is a class D (very efficient) controller, able to run from 2.0V-5.5VDC. The A+ and A- inputs of the amplifier go through 1.0uF capacitors, so they are fully 'differential' - if you don't have differential outputs, simply tie the Audio- pin to ground.

Build a miniature display to showcase animated GIFs

The Adafruit NAU7802 contains a super-high-resolution 24-Bit differential ADC with extra gain and calibration circuitry that makes it perfect for measuring strain gauges / load cells or other sensors that have four wires that are connected in a Wheatstone bridge arrangement.

Let your fellow convention attendees know how much socialization you're up for with this traffic light badge. A button on the side lets you change the color of the traffic light on the fly.

Certain boards, like the ESP32 Feather V2, have a USB to serial converter chip that communicates between the processor and your computer. This guide will show you how to install the driver needed for the WCH USB to serial chips.