The purpose of this project is to make it possible to remotely switch on a Webasto Thermo Top C water heater that is used to pre-heat the heating system of a car without starting the motor.
http://www.xs4all.nl/~dicks/avr/webasto/index.html
The wireless charger will convert the RF or microwave signal at 900 MHz frequency into a DC signal, and then store the power into an AAA battery.
http://www.engr.sjsu.edu/rkwok/projects/EE198B%20-%20Wireless%20Battery%20Charger.pdf
Here is a mod that the author is about to show you is again somewhat different from the mainstream. He combined a Nokia LCD screen and a Logitech mouse and got some interesting stuff.
http://www.metku.net/index.html?path=mods/loginoki/index_eng
PIC16F628 is used for the circuit which displays a day of the week in a large-size 7 segment LED matrix. Also, an order lighting-up control is done to suppress the consumption of electric power of the LED.
http://www.hobby-elec.org/e_pic6_e.htm
This clock works with Japanese radio clock system so the country out of Japan can not use this equipment just as it is. Please arrange in the system in your country by yourself referring to the contents to carry on these pages.
http://www.hobby-elec.org/e_pic6_d.htm
A temperature controller with PIC. It uses two temperature sensors, drives external equipment, and keeps the temperature of the room at preset temperature. The purpose of this equipment is for preventing room temperature going up with the heat of the computers.
http://www.hobby-elec1.org/e_pic6_g.htm
A co-worker of mine wanted a small timer that ranged from 1s to 15s depending on what the user selected. They wanted to use a set of 4 dip switches to select the time. Needed to be as small as possible (weight being very critical) and run off of a 9V battery.
http://www.geocities.com/researchtriangle/lab/6584/r_timer.html
Here is a low cost temperature sensor which can be connected to a PC via its serial port, allowing the PC to monitor and record temperatures. GregM and Martin researched various options for low-cost temperature sensors which could be easily interfaced to a PC, and came across the DS18S20, a 1-wire parasite-power digital thermometer sensor made by Maxim-Dallas.
http://martybugs.net/electronics/tempsensor/
This 3 and half digit SP521PR based digital thermometer, it is possible to measure from -40 to +150 degree celsius. It uses S8100 or 1S1588 as thermal sensor. The power consumption is very small and it is possible to operate about 3 months continuously from a 9-V cell.
http://www.hobby-elec.org/e_ckt26.htm
Perfect as a remote replacement for access control and for switching on/off burglar alarms, it emits an RF code every time you digit the correct combination on its keyboard. Three different combinations for three different actions can be entered at program-time. The keyboard layout is configurable, too: you can use any matrix up to 4 rows by 4 columns, assigning your own ASCII codes to each key.
http://www.riccibitti.com/rf_pad.htm