This Laser Range Finder (LRF) is a low-cost distance measuring instrument that uses laser technology to calculate the distance to a targeted object. It can measure up to 8 feet away but for optimal measurement the range is about 6 inches to 4 feet. The project is designed by Joe Grand.
This Automatic Packet Reporting System (APRS) Weather Station project built based on PIC16F877. It comes with humidity sensor (Honeywell HIH-3610), Pressure sensor (Motorola MPXA4115), thermo meter (DS1621), RTC (For time Stamp) with battery back-up. The project uses 4×20 LCD to display all weather parameters, but you can still operate it without LCD for power saving.
The aim of this ATmega644-based project is to build a portable device implementing wireless technology and taking full advantage of the wide-spreading Internet to provide a convenient solution to monitor human health.
This ATmega168-based project monitors household power usage and logs it to an SD card. Signals from voltage and current detectors amplified LMC6484AIN quad op-amp and then AVR microcontroller computes the power consumption using the formula P=VxI.
This guide helps you to learn and understanding everything you need to know about the Raspberry Pi computer, its background, purpose, system specs, the software it runs and the amazing things it is capable of. FREE DOWNLOAD Unofficial Raspberry Pi Manual (limited)
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