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LED matrix pong game
Check out this DIY LED matrix pong game, which is Arduio-controlled and uses a rotary encoder as input device and two 8×8 bi-color LED matrix boards for game display. The LED matrix displays are driven...
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Digital blood pressure meter design using PIC microcontroller
This Application Note from Microchip provides a reference design for building a non-invasive blood pressure meter using the PIC24FJ128GC010 microcontroller and MCP6N11 instrumentation amplifier. A...
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Arduino ukulele
Ukulele is a small guitar-like musical instrument with four strings and has been a symbol of Hawaiian music for over 100 years. Simone Giertz has created a miniature version of it using the Arduino...
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Audio record/play implementation using MSP430
This application report discusses the implementation of a low-cost solution to store and play audio or using an MSP430. The reference design uses an external SPI flash memory, which enables flexibility...
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Remote-controlled biped robot using Attiny85
Max’s remote-controlled biped robot uses four servo motors for its legs and feet to go forward and backward. The Attiny85 microcontroller is used as its brain which receives and follows the motion...
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Design considerations for a wireless LED sign
This application note from Texas Instruments describes the hardware design considerations for making a multi-sport scoreboard that is cost efficient, portable, easy to use, and support wireless...
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Digital Stethoscope example using the TMS320C5515 DSP board
Texas Instrument’s medical development kit (MDK) is based on the C5515 DSP and consists of individual analog front-end boards forvECG, digital stethoscope, and pulse oximeter. This application note...
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Zero Plus: An open-source wifi module for IoT applications
Zero Plus is a new open-source wifi module for Internet of Things applications. This project is currently being crowdfunded on Indiegogo. With RT5350 wifi SoC on board, Zero Plus provides a high...
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Arduino gesture vocalizer
People with impaired hearing and speech often find difficult to interact with other people, mostly because their sign language is not understood by all. This Arduino-based gesture vocalizer is designed...
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3-D printed walking robot
One of the most interesting applications of 3-D printing technology is building customized robot parts. It allows makers to design their own parts on a computer using affordable tools and convert the...
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Arduino standalone MP3 player
This Arduino-based standalone MP3 player was designed by Jose Daniel Herrera using the VS1002d single-chip MP3 audio decoder, which is a complete audio solution with a high-performance, low-power DSP...
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Adding hardware media controller to your PC
Keyboards with extra keys for quick multimedia control are a handy shortcut for geeks who love to listen to music while working on their computers. However, not all keyboards contain those extra keys....
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Arduino solar charge controller and energy monitor
Solar charge controller is a key component in any photovoltaic system that uses batteries to store energy. The main function of solar charge controller it to reduce the overall system maintenance and...
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ChronodeVFD: A wearable wrist watch with vacuum fluorescent display
Vacuum Fluorescent Displays (VFD) are usually considered bulky, and are, therefore, mostly found in non-portable consumer-electronics gadgets such as DVD players, automobile audio system, and electric...
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Underwear alarm
Last week we looked at Randy’s walking robot made of customized 3-D printed parts. This week, he came up with this crazy idea of making underwear wake-up alarm for his lazy girl friend, who does not...
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Access 15 tact switches with one input pin
A while back I posted two articles on reading multiple tact switches using a minimal number of I/O pins of PIC microcontroller. One of them uses a resistor-divider network to create an unique range of...
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Enhancing audio with echo effect
Delay effects are commonly implemented in various audio systems including Karaoke player, guitar amplifier, advanced sound processing equipment, recording studios, television etc. It basically adds an...
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Portable Bluetooth-enabled scrolling LED matrix display- Part 1
LED matrix displays are great fun. They are visually charming, and readable from a far viewing distance with a much wider angle of view as compared to many other types of electronics displays. They can...
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Portable Bluetooth-enabled scrolling LED matrix display- Part 2
In Part 1 of this project, we described the construction of Easy Matrix, which is a cascadable 8×8 LED matrix display with MAX7219 chip on board. We developed an Arduino sketch for scrolling text...
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FlowPaw: A new rapid prototyping tool for electronics and robotics
With so many other development platforms already out there in market, DSP Robotics, in collaboration with MikroElektronika, is going to introduce a new tool, FlowPaw, for rapid prototyping with...
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