UK plant researchers are looking into LED lighting to grow plants with less energy. While outdoors in the summer there is no real need to provide plants with artificial lighting, it is increasingly used to extend the growing day and growing season inside greenhouses. It is not necessarily the efficacy of LEDs that is the […]
Glasshouse LEDs save greenhouse gasses Read More »
People who are visually impaired usually use a staff to guide them as they walk. They tap with their staff to know if an obstacle is present around. Others use the echolocation technique. They produce a clicking sound through their tongue, foot, and fingers and through this they detect objects from their surrounding by sensing
Staff with Click Sound and Obstacle Alarm Read More »
Introduction I assembled my Geiger counter kit from MightyOhm some time ago. It’s a very fun kit and the finished counter looks awesome. Oh, that Geiger-Muller tube sitting on that yellow PCB! I’ve always wanted to modify it somehow and add functionality. Today I realized that an Adafruit Feather sits PERFECTLY where the AAA battery
Wi-Fi and OLED Upgrade for MightyOhm Geiger Counter Read More »
Features Complete Low Power Wireless NiMH Charger Low Minimum Input Voltage: 2.2V Small Total Solution Volume 1.5V, 25mA Linear Single-Cell NiMH Charger Temperature Compensated Charge Voltage Integrated Rectifier with Overvoltage Limit Zinc-Air Battery Detection Reverse Polarity Protection Thermally Enhanced 6-Lead (2mm × 2mm) DFN package Typical Application Description The LTC®4123 is a low power wireless receiver
LTC4123 – Low Power Wireless Charger for Hearing Aids Read More »
The serial port of the PC is a very important resource both in industrial environment and in home-made electronics, due to the wide popularity of the UART interface which is to be found on many microcontrollers or on many test and design instrumentation (programmable power supplies, multi-meters, oscilloscopes etc). Even if modern-day computers tend not
Serial Port Communication in C# Read More »
MIT researchers have developed a new type of radio frequency identification (RFID) chip that is extremely difficult to hack. If such chips were widely adopted, it could mean that an identity thief couldn’t steal your credit card number or key card information by sitting next to you at a café, and high-tech burglars couldn’t swipe
Toward hack-proof RFID chips Read More »
The principle advantages of LED lighting are its long life, which can be as long as 60,000 hours, or 20 years, and inherent energy efficiency. LED streetlights have been shown to use 15% of the energy and give off less heat, while generating more light per watt. LEDs do not contain toxic chemicals such as
Passive device improves reliability of LED streetlights Read More »
Features Extended Safe Operating Area Maximum Output Current: 800mA Stable with or without Input/Output Capacitors Wide Input Voltage Range: 1.2V to 36V Single Resistor Sets Output Voltage Output Current Monitor: IMON = IOUT/5000 Junction Temperature Monitor: 1μA/°C Output Adjustable to 0V 50μA SET Pin Current: 1% Initial Accuracy Output Voltage Noise: 27μVRMS Parallel Multiple Devices
LT3089 – 800mA Single Resistor Rugged Linear Regulator with Monitors Read More »
I wanted to do a follow-up to my last clock build, the MSP430 Analog Gauge Clock, reusing some of the code from that project, and I had an IV-18 vacuum florescent display (VFD) tube that I bought on Ebay. Also, I wanted to finish the project before Christmas break was over. That didn’t happen. But
MSP430 VFD Clock – Manhattan Style Read More »
A WiFi (Wireless Fidelity) is a technology that uses the 2.4GHz UHF and 5GHz SHF ISM radio bands to allow devices such as computers, smartphones, digital cameras, tablet computers, etc. to network. Nowadays the WiFi technology is being used by cities to provide free or low-cost Internet access to residents. The WiFi is inexpensive and
Wearable WiFi Detector Read More »
