Students in Cornell’s ECE4760 produced a variety of microcontroller projects in the last five weeks of the semester. Many use Adafruit products. Projects include real time video spectrograph, circuit plotter, touchpad robot, and a Skittle sorter made of cardboard.
Cornell University Students Design with Microcontrollers - [Link]
Stream your music to your entire home !!!
Zola Lab – Portable FM Transmitter
Sparkfun Circular LED
Adafruit Si4713 FM Radio Transmitter
2 x Arduino Pro mini
Sparkfun Rotary Encoder
Catalex 4-Digits 7seg Display
On the top there is a: P2 audio input, a switch on/off, and a female micro-usb for charging Lipo.
DIY portable FM transmitter - [Link]
Raspberry Pi PiTFT Weather Station:
More tinkering with the wonderful Adafruit 2.8″ Touchscreen TFT module (PiTFT) for the Raspberry Pi. This time a weather station drawing data from weather.com.
Luckily there’s a wonderful python module to extract data from three popular weather services; python-weather-api supports NOAA, Yahoo! Weather and weather.com. This makes life so much easier.
Download the module and install in the usual way; there are instructions in their wiki.
A simple way to display the raw data in a more readable form is to use Pretty Print (pprint) which is installed by default on Respbian. Just change the code in the call to weather.com in the script below to your town which can be found in the URL if you use the weather.com web page….
PiTFT Weather Station - [Link]
Get fit for summer with your own activity monitor from this Adafruit Tutorial!
Keep that New Years resolution of getting fit by staying safe with a neopixel motion activated running band powered by Flora, Adafruit’s wearables electronics platform.
This is the activity monitor you’ll want to wear outside and at the dance club!
Get Fit For Summer With A DIY Neopixel Motion Activated Running Band - [Link]
What is a Stepper Motor? All About Stepper Motors @ The Adafruit Learning System.
Stepper motors are DC motors that move in discrete steps. They have multiple coils that are organized in groups called “phases”. By energizing each phase in sequence, the motor will rotate, one step at a time.
With a computer controlled stepping you can achieve very precise positioning and/or speed control. For this reason, stepper motors are the motor of choice for many precision motion control applications.
Stepper motors come in many different sizes and styles and electrical characteristics. This guide details what you need to know to pick the right motor for the job.
What is a Stepper Motor? All About Stepper Motors - [Link]
This learning project from Adafruit describes how to make your own point-and-shoot digital camera using the Raspberry Pi board. In addition, you will also need the Raspberry Pi Camera Board, a TFT touchscreen, a battery pack and a Wifi adapter to automatically transfer pictures to another PC for editing.
Make your own digital camera using Raspberry Pi - [Link]
adafruit.com launched a new little micro controller board board based on ATtiny85.
Trinket may be small, but do not be fooled by its size! It’s a tiny microcontroller board, built around the Atmel ATtiny85, a little chip with a lot of power. We wanted to design a microcontroller board that was small enough to fit into any project, and low cost enough to use without hesitation. Perfect for when you don’t want to give up your expensive dev-board and you aren’t willing to take apart the project you worked so hard to design. It’s our lowest-cost arduino-IDE programmable board!
Adafruit TRINKET – Mini Microcontroller – 3.3V and 5.5V versions – $7.95 - [Link]
SMT Manufacturing @ The Adafruit Learning System. Here are a bunch of tutorials for manufacturing small to medium scale (10 – 10,000) piece surface mount electronics. From solder paste storage to Microscope Inspection.
SMT Manufacturing @ The Adafruit Learning System - [Link]
Adafruit has launched their Circuit Playground app for iPhone, iPad and iPod Touch. It provides a collection of reference formulas at the touch of a button, simplifying calculations to make your project more fun – [via]
Decipher resistor & capacitor codes with ease. Calculate power, resistance, current, and voltage with the Ohm’s Law & Power Calc modules. Quickly convert between decimal, hexadecimal, binary or even ASCII characters. Calculate values for multiple resistors or capacitors in series & parallel configurations. Store, search, and view PDF datasheets. Access exclusive sneak peaks, deals & discounts at Adafruit Industries. All that, plus updates with additional features & enhancements – MANY NEW CALCULATORS AND TOOLS being added!
Adafruit launches Circuit Playground app - [Link]
Lithium-polymer battery charger chips @ Dangerous Prototypes – [via]
Lithium-polymer batteries are an excellent choice for portable projects. They are relatively cheap, hold a significant charge, and last for a long time. The drawback with these batteries is that they require rather complicated charging protocols. You have to watch out for overcharging, undercharging, overheating, etc…
We are looking for a standard part to use in our projects, so we decided to do a roundup of open source lithium polymer chargers from SparkFun, Seeed Studio, and Adafruit. With the exception of Seeed, all the chargers are based on Microchip’s MCP738xx family of battery management ICs that come in SSOP and DFN packages. They handle all the charging algorithms and usually only require a single external capacitor.
Lithium-polymer battery charger chips - [Link]