16×32 RGB Matrix Panel Driver Shield Revision 1

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Our RGB matrix panel driver shield for Arduino Uno has been slightly revised. The shield now also carries the DS1307 RTC chip on board along with a CR1220 coin cell battery holder on the back. It is applicable for driving popular 16×32 RGB matrix panels with HUB75 (8×2 IDC) connectors. Row and column driver circuits are already built on the back side of these matrix panel. The data and control signal pins for driving rows and columns are accessible through the HUB75 connector. It requires 12 digital I/O pins of Arduino Uno for full color control. The revised version also has a slide

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Another weather station using modular design approach

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Nevyn’s entry to the 2016 Hackaday Prize contest is a modular weather station built using a number of sensors mounted on a general purpose circuit board. The sensor readings are captured by ESP8266 and sent out to the internet. The initial project supports the following measurements: – Air temperature – Air pressure – Humidity – Ground temperature – Light intensity (luminosity) – Ultraviolet light intensity – Wind speed – Wind direction – Rain fall The weather station will be designed to work off-grid with limited capacity to store data for upload at a later date should an Internet connection fail temporarily.

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Chronio: Another Arduino based wrist watch

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Chronio is an Arduino-based 3D-printed wrist watch designed by Max.K. The watch fits in a 22mm watch strap and runs on a 160mAh button cell for several months. A 96×96 pixel Sharp Memory LCD is used for display. Besides telling time, you can play a simplified version of Flappy Bird on it. Features The ATmega is in Sleep mode for most of the time and only runs once a minute to update the time or if a button is pressed. This reduces the current consumption to 2uA. Sady the display needs a certain pulse every second, which requires a complicated

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Vibrating Mesh Nebulizer using PIC MCU

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A nebulizer is a medical device that is used to transform a liquid medicine into aerosol droplets so that patients with pulmonary diseases can easily inhale the medication into lungs. Medical nebulizers are commonly used for the treatment of COPD, asthma, cystic fibrosis and other respiratory diseases. This application note from Microchip demonstrates an implementation of driving a piezo mesh disk in a vibrating mesh nebulizer demo. The demo system features a Microchip 8-bitPIC16F1713 microcontroller-based piezo mesh disk driver board and a nebulizer plastic housing. A significant innovation made in the nebulizer market is vibrating mesh technology. Basically, a vibrating mesh nebulizer is composed of a liquid reservoir with a

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Arduino ultrasonic radar

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Dejan Nedelkovski from How To Mechatronics has a very nice tutorial about making an ultrasonic radar using Arduino and Processing platforms. The project requires an HC-SR04 ranging sensor module mounted on a servo motor to scan the surrounding. The Arduino board control the scan position, as well as receives the ranging sensor output. The received echo data is post-processed on a computer using a Processing-based application and the radar signature is displayed on the computer screen. See this radar in action in the following video.

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