- 68hc11 board
	- Meteo station with 68hc11
	- Drive steppers, first through parallel port
	  of a computer, later with a 68hc11.

	- FAQ about the 68hc11
	- FAQ about the Microchip PIC chips

http://martybugs.net/electronics/tempsensor/hardware.cgi
http://www.hoppie.nl/tempsens/
http://circuitsradio.com/circuits/Digital--Microcontrollers.html
http://www.educypedia.be/electronics/circuitsmic.htm
http://www.orgler.it/sw-step.htm
http://www.interq.or.jp/japan/se-inoue/e_step.htm
http://www.mastincrosbie.com/mark/electronics/pic/stepper.html

http://www.kpsec.freeuk.com/projects/dummy.htm

http://hackedgadgets.com/2008/10/16/dual-speaker-laser-xy-mirror-display/
http://www.iedllc.com/laser_exhibit.php

http://www.qsl.net/om3cph/counter/counter.html
http://www.elektronicaforum.nl/frequentie-counter-lcd-t6665.html
http://freenet-homepage.de/dl4yhf/freq_counter/freq_counter.html
http://www.best-microcontroller-projects.com/pic-frequency-counter.html

 This week I got hold of two Helium Neon laser tubes, complete with the high-voltage
 power supplies. With the lasers there where also some mirrors, lenses, a few laser-
 diodes and a accumulator which fits on the first laser.

 The first HeNe laser is produced by Melles Griot with the model no. 05-LHP-143 from
 november 1991. The laser is rated at 5.1mW output power, and seem to have come out of
 some sort of Xerox product because there is label with the Xerox p/n: 122E00590 on
 the tube.

      (ToDo: photo of the tube)
 According to the info I could find this tube has the following specifications:

   Laser type     : Helium Neon
   Output power   : 5.1 mW
   Startup voltage:
   Beam diameter  :
   Diversion      :
   Size (l x d)   :  x 45mm

 The laser came with high-voltage power supply from Laser Drive Inc. according to the
 label it's model is 314SLFBRHXL. On the label for the 'input' to number: 105E1100B and 
 for 'output': 105K01303 REV A. I haven't been able to find what the numbers mean, I 
 did find a connection diagram for hooking up the power supply to the laser.

      (ToDO: photo of the PSU)


 The second laser is also a HeNe tube, made by Hughes Aircraft Company in Jan. 1980 with
 the model no. 3222H-Pc

      (ToDo: photo of the tube)

 For this tube I found the following specifications:

   Laser type     : Helium Neon
   Output power   : 2 mW
   Startup voltage:
   Beam diameter  :
   Diversion      :
   Size (l x d)   :  x 44mm

 The power supply that came with the second laser is also a AC supply but for 110VAC.
 This power supply is made by Power Technology Inc.. The model is: L41D-2Z, with 95-135V
 input voltage and a 0.12A of max. input current. Output voltage is 1730V with a max. of
 6.5mA of output current. I couldn't find any other specs for this power supply. There are
 four wires, two grey, one green and a thick black one for the Alden connector.

      (ToDO: photo of the PSU)


 http://www.repairfaq.org/sam/lasersam.htm

	- SSM2024
	- XR2206CP
	- ICS1702N
	- TC232CPE
	- PXO-765
	- TL497ACN
	- UC3906N
	- UC3842AN
	- SAA1027
	- ADC0808N
	- PIC16F84A-04/P
	- TMS27PC010
	- AT27C256R
	- CAT28F010N
	- HY62CT081ED70C
	- CAT28C16AP-02