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Homebrew circuit printing

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Robotic Monty Robotic Explorer Driller Machine Expender Arm robot

By cable paralllet By cable serial By laser serial By radio serial

RF 4 channels RF 8 channels(PIC16F84) By IR

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Receiver FM Receiver AM Receiver FM(PLL) Receiver UHF

MICROCAMARE WIRELESS 1.2 Ghz

WATER ALARM

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SEMICONDUCTOR - HOMEBREW INTEGRATED CIRCUIT PRINTING

DEVICES

• Wires conducting

You can make it, with plate nitrate and reductor solution. Usually make with graphite or silver with a co.emultion like benceze or toluene.

• Resistors

You can make it, using pencil 2H. More graphite, less resistance. More wax(or pencil harder), more resistance.

• Condensators
• Diodes

You can make it, using graphite (printing with a pencil) and ferric hidroxide.

Other Diodes .-

• Copper oxide/copper - This consisted of copper filings; 1/2 of the filings I heated on the stove so that they got coated with copper oxide (tumed reddish), other 1/2 left shiny. Filled a small glass tube with oxide coated filings on one side and shiny filings an the other. Plugged the ends and inserted a couple pins in each end. The junction needed some manipulation periodically but it did work.
• galena/carbon rod
• graphite/copper oxide
• graphite/iron oxide. This my diode but, ink in a piece of paper.(graphite is from a pencil, and iron oxide is from a oxide metal Fe2O3).

• Transistors
• LEDs.
  • SiC, IrGaN, ZnSe -> Blue light
  • GaP, GaN, -> Green light
  • GaAsP -> Red, orange and yellow light
  • AlGaAs -> Infrarred light