PICKIT2

This is the "PICKIT2" usb programmer which can be used for programming most of the pic micro controllers including 12F,16F,18F,24F,30F,33F... . if you are using "PICKIT2" then you can programme any micro controller on board it self.so you not need to remove uc from the cct and place in a programmer.

you can download software for PC and .hex file from microchip website.

The programming voltage of a pic micro controllers is around 11V.so voltage booster (consist of L1,Q1,C7) has used to convert 5V(USB power supply)to 11V. for L1 you can use a coil wound your own and this site will help you to calculate coil induction. you should notice that produced voltage is not depend on induction of the coil.so it's not requred to coil to be exactlyc 680 uH.

You can remove U1 & U2 (two memory IC),if not necessary(you can store a .hex file in those ic
and so a micro controller can be programmed without a PC )

following figure show the connections to the mc.

if you need more information, please read a article about ICSP(In circuit serial programing).

(also information about ICSP is included in any pic microcontroller datasheet)

Ultrasonic Range Meter

if you want know more log in to http://www.hobby-elec.org/e_pic6_6.htm

Ultrasonic

if you want to find out about ultra sonic please go to this website

http://www.discovercircuits.com/U/ultrasonic.htm

Light to Frequency Converter TSL220

A large area photodiode and current to frequency converter combined in a clear plastic 8-pin DIL package. The output is a pulse train whose frequency is directly proportional to the light intensity. The output is CMOS compatible (use a 3k3 pulldown resistor to drive LS TTL) and the frequency can be measured by pulse counting, period timing or integration techniques. The photodiode has a wide dynamic range, high sensitivity and high noise immunity. The output frequency range is determined by a capacitor in the range 10pf to 100pf, which permits the output frequency to fall within some suitable range for any given light intensity.

Intermittent wiper controller by 2N4401

The intermittent wiper circuit shown above causes the auto’s windshield wipers to wipe once every several seconds instead of constantly wiping. The circuit may be added to older cars to provide the intermittent function or it may be used to replace broken wiper circuits in modern cars. The delay is continuously adjustable with the potentiometer but switch selected fixed resistors may also be used, if desired. The circuit should be connected to +12 volts at the same point as the original wiper power switch so that the proper fuse protection is preserved. The 12 volt relay should have contacts rated for a few amps since the wiper motor will draw a considerable start current but most automotive relays are adequate. The circuit should be quite trouble-free and will work on the first try if no wiring errors are made!