Clone Pi-W with their hands

• Microcontroller  
  • Atmega8-16PU (8A-16) - 1 pc
• chips
  • CD4066 - 1pc  
  • TL074 or TL084 - 1pc
   
• Transistors  
  • IRF740 or IRF630 or IRF840 - 1 piece  
  • 2N5551 or S9014 - 4pcs
  • 2N7000 - 1 pc  
  • Linear voltage
    • 78L05 - 1 pc
     
  • Adjustable zener
    • TL431 - 1 pc
   
• Diodes  
  • 1N4148 - 2 pieces
   
• Capacitors  
  • 470pf - 4 pieces  
  • 47nf - 1pc  
  • 10nf - 2 pieces  
  • 100nf - 2 pieces
  • 1.5nf - 1pc  
  • 2200,0 x 16V - 1pc  
  • 1000,0 x 16V - 1pc  
  • 220,0 x 16V - 1pc  
  • 470,0 x 6,3V - 1pc
   
• Resistors  
  • 20 th - 2 pieces  
  • 47 th - 1pc  
  • 100 ohm - 1pc
  • 390 ohms 0.25W - 2 pieces  
  • 470 th - 1pc  
  • 1K - 3pc  
  • 1K Multi trimmer  
  • 3K - 2 pcs
  • 12K - 2 pcs
  • 10K - 15pcs  
  • 5K1 - 1pc  
  • 47K - 1pc
  • 2M - 1pc  
  • 100K - 1pc  

PCB : PCB format lay, electronic circuit and firmware are archived clone Pi W.zip After we soldered metal detector circuit , we need to " breathe in her soul " - flash microcontroller . To cope with this problem , we need a programmer . The scheme is simple programmer of five wires or more complicated , but working through USB AVR910 usb . If you've never sewed a microcontroller, you need to learn the material in this article .
under ClonePI-W has several firmware versions :

• firmware 1.2.5 - metal less susceptible to the influence of the soil , the search mode - dynamic
• firmware 1.2.4 - search mode dynamic / static , otherwise it the same as in 1.2.5

Fabricate coil :
This is done very simply . Take what - any pan with a diameter of 20cm and more bulk and shakes 25-27 turns enameled wire (diameter 0.6-0.8 mm). Coil resistance should be in the range of 1-2 ohms. The larger the diameter of the coil , the higher the sensitivity of the MD. To find small items best to wind the coil diameter 28cm . In principle, this MD is not fussy to the coils , I've tried many types of coils , and shook a basket , but on instinct much of a difference at the same diameter noticed. To search for large objects would be appropriate to make a deep frame, it is practically not sensitive to small objects , and the depth will increase to 3 meters.

Manufacturing rod
Spar can be made from almost any non-metallic materials , such as polypropylene pipe I liked not shtabirovannaya ( shtabirovannaya or fiberglass ), soldering iron to solder it for polypropylene pipes exploded

Комментарии - (2)

• davood59 говорит:
  
  
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• Сергей говорит:
  А схема точно рабочая? Собрал и после стандартной мелодии постоянный гул в динамике. На cd4066 просто первый раз делаю.
  
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