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Product review: Elecrow’s 7″ HDMI LCD Display for Raspberry Pi

Posted on December 8, 2016 by R-B Leave a comment

A colorful LCD display is always a great add-on to any Raspberry Pi project. This article provides a quick review of a high resolution (1024×600 pixels) 7″ HDMI LCD product from Elecrow and illustrates a simple way to set it up for Raspberry Pi. With HDMI support, built-in capacitive touchscreen control, and 4 mountable corners, this LCD is a perfect Plug-n-Play display for use with single board computers like Raspberry Pi and Banana Pi. It comes with an HDMI cable for the display, an USB cable for touchscreen control, four mounting screws, and a DVD containing the driver softwares. Hardware connections and software setup The setup

Serial seven segment LED display shield

Posted on December 6, 2016 by R-B 2 comments

Seven segment LED displays are brighter, more attractive, and provide a far viewing distance as well as a wider viewing angle compared to LCD displays. This project describes a serial seven segment LED display shield for Arduino Uno or compatible boards. The shield consists of eight 0.56″ seven segment displays that are driven by one MAX7219 chip. The shield also features a light dependent resistor (LDR) to implement adaptive brightness control to the LED displays. The LDR output can be fed to A0 or A1 analog input channel of Arduino to read the surrounding illumination level. Arduino can then use that

Minimalist ATtiny85 wrist watch

Posted on December 6, 2016 by R-B One comment

David Johnson-Davies’ minimalist ATtiny85 wrist watch displays time using 12 LEDs that are arranged in a circle like a watch dial. A push button, installed on the top side of the PCB, needs to be pressed to see time. The watch shows the hour by lighting up an LED and minute by flashing another LED. The minute resolution is 5 min. To show the time you press the button on the watch face, and the time is then displayed for four seconds. It lights one LED to show the hour, and flashes another LED to show the minutes to the nearest

End of Year Sale at Microchip Store

Posted on December 6, 2016 by R-B Leave a comment

It’s time for the end-of-year sale at Microchip store. This year’s discount coupon code is EOY2016DT, which could save you some money on your favorite development board. Using this code can get you $65 off on Digilent Analog Discovery Multi-Function Instrument, $8 off on Curiosity HPC Development Board, and more. Check out the main sale page.

Data logger for Skiers

Posted on December 5, 2016 by R-B Leave a comment

Matthew Magaldi and Aidan Angus are both winter sport enthusiasts who love skiing. They designed a PIC32-based data logger system that captures their skiing experience on a SD card and also wrote a Python script for post-processing and visualization of their skiing behavior. The data logger receives data from multiple sensors, including an accelerometer, a gyroscope, and a temperature/pressure sensors. There were several tradeoffs for the hardware and software used in the project. First, in software, because we were limited to using a single core processor in the PIC32, we were limited in the synchronization of our data. The protothreads that

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