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Category Archives: Arduino

Arduino-based DIY antenna analyzer

Posted on August 7, 2015 by R-B Leave a comment

Antenna analyzers are a common tool used for troubleshooting antennas and fine tuning them for optimal performance. They might cost anywhere from a couple hundreds dollars to thousands based on quality, features, and frequency range of operation. For a low frequency application (< 30MHz), this Arduino-based DIY Antenna Analyzer can be build under $40. The key component of this design is the AD9850 DDS module that can be bought on eBay for less than $5. The following video shows the demo of this project. via [Hackaday]

Walltech Smartwatch with BT 4.0 and many more features

Posted on August 6, 2015 by R-B Leave a comment

Walltech Smartwatch is a bluetooth 4.0 enabled fitness-tracking smart watch designed by John Wall for Android+iOS with a 1.5″ color OLED display, SD card, NFC, wireless charging, and precision IMU. You may have seen any of the smart watches on the market today and thought, “that’s way too expensive,” or “I wish this feature was customizable,” or “darn, I need an android phone for that.” If so, look no further! Sporting a beautiful 1.5″ full color OLED display with micro SD card slot, QI charging, NFC, altimeter, thermometer, compass, gyroscope, accelerometer, pedometer, and full Android/iOS bluetooth 4.0 low energy capability

Motion Control Rig for Time-Lapse Photography

Posted on August 5, 2015 by R-B Leave a comment

Tyler Winegarner and Chris Bordeleau have posted great instructions on their build of Arduino-based motion control rig for time-lapse photography on Makezine Weekend Project section. If you dig around in your camera’s settings long enough, you’re almost assured to find that it has a mode to create time-lapse videos — those magical, time compressing movies that can turn any hillside or street corner into a lightning-paced dreamscape. Time-lapse videos by themselves are easy enough to make, but if you do enough of them, you’re likely to get bored with the motionless camera framing. But what can you do here? Having

DIY Arduino Pedometer Wristwatch

Posted on August 5, 2015 by R-B 2 comments

Benhur.Goncalves shared his design of an Arduino-based Wristwatch that features Pedometer along with Temperature, Altitude and Compass sensors. Hi folks! Last few days I’ve been obsessed with the idea to make my own watch from arduino parts, but something cool I could use and say I did it myself. So I found out there was a sensor board (commonly named GY-87) which had three sensors on it: HMC5883L (compass), BMP085 (pressure, altitude, temperature) and MPU6050 (accelerometer and gyroscope). With it, via I2C, I could add an Arduino Pro Mini, and an I2C Oled Display and make a watch capable of

TAHMO to deploy a network of 20,000 weather stations in sub-Saharan Africa

Posted on August 5, 2015 by R-B Leave a comment

Team TAHMO is planning to build a network of 20,000 weather stations throughout sub-Saharan Africa for better weather forecasts, early warnings, and climate observations, which will eventually lead to improved food production in Africa. TAHMO stands for “Trans-African Hydro-Meteorological Observatory”, a program that aims to design, build, deploy, and operate a network 20,000 weather stations in sub-Saharan Africa (www.tahmo.org). Presently, we have pilot stations in Senegal, Chad, Nigeria, Uganda, and South Africa and “pilots at scale” in Ghana and Kenya. TAHMO stations have to be be affordable and robust. For example, unlike standard weather stations, there should not be any moving

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