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 small size GPS logger module allows you to record a route. You can mount it on an airplane model, car, bike or put it in your pocket to track your walking path. The project uses lipo battery as power source and PIC16F648 to read the serial protocol of the GPS or the computer and [...]
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