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  1. A

    eBay Arduino Uno Clones

    build it your ownduino ;), if you want the pcb layout, i can share it in here. The format used with expresspcb.exe, and very easy to used.
  2. A

    How to make high electromagnetic field?

    it is possible to build 15 meter deep into soil of electromagnetic field? to detect metal? i try to understand mini 555 metal detector, but the length is small.. If i try to winding the inductor more, can this help to get large range metal detector? and deeper into soil?
  3. A

    How to make high electromagnetic field?

    Hello all, i just want to know either electromagnetic field strange depend on voltage given to coil or how many coil winding?
  4. A

    How UC3845 Control Pin work?

    Hello, so sorry for late reply, i'm tracing my original dc-cdi circuit, and here it is: I think to use arduino atmega328 to replace P89LPC915, it is possible to generate oscillator signal to BLUE arrow, and pulser to RED arrow. The yellow arrow will be signal RPM to control both...
  5. A

    How UC3845 Control Pin work?

    Thank duke and Rleo6965, ok, here is dc-cdi that fully function with Yamaha LC135 system. But, it is possible if i want to remove PIC controller and run the circuit with only pickup signal and maybe simple transistor circuit to trigger scr and uc3845? Example like this :
  6. A

    How UC3845 Control Pin work?

    Rleo6965 do you know any idea how to make dc-cdi with analog system. Nowadays all used microcontroller to trigger the scr.. Here ac-cdi analog type : i plan to convert ac input with high voltage circuit.. but i not understand how the h.v circuit function..
  7. A

    How UC3845 Control Pin work?

    Hello, i have a dc cdi hv circuit, it using UC3845 as oscillator, but the circuit not complete, i need to understand how hv circuit work in dc-cdi. Should i used same signal that trigger scr?
  8. A

    Home Made Osciloscope

    Have you try this arduino osciloscope? http://www.instructables.com/id/Oscilloscope-THE-EASY-WAY-DIY/step3/Programming-Processing/ some people success make it work, but im fail ;(
  9. A

    Timing coil transistor output to transistor?

    May i know what we call the signal to the pic? On pic side it will be counter function or analog input? I need some correct keyword for this function..
  10. A

    Timing coil transistor output to transistor?

    Thank Rleo6965, i just order the osc ;D,"My CDIS project was now functional and now installed in my Mitsubishi Lancer since last April this year 2012," it is open source or you sell it? Can you upload some video on youtube ? like to see your CDIS..it cool :D
  11. A

    Timing coil transistor output to transistor?

    Hello, sorry for the late, i just done some school assigment ;), i dont have any oscilloscipe, but can i used pocket DSO oscilloscope on ebay, i can order one if it work? I cannot find any datasheet about timing sensor, because it stock from factory. Only part number and motorcycle model...
  12. A

    Help me on this circuit formula pls

    Hello, i got assigment on calculate volt for each resistor. In the circuit given have Current value, resistor value and volt for batery value. I confiuse because there have two batery on the circuit. Here the circuit : V = IR so : A to B = 2.0ohm x 8 = 16 v A to C =...
  13. A

    Timing coil transistor output to transistor?

    Thank Rleo6965 and john monks, here the modification circuit.. http://s13.postimage.org/ceqorcqw7/Supp8.jpg here i putting multimeter to 200ac range and the voltage come out from timing senso is like below : on idle 00.2vac on full throttle gear 2-3 i got 01.8vac on full throttle...
  14. A

    Timing coil transistor output to transistor?

    Here i try this few minute ago, the led blingking ;) please correct me if there something wrong and need to fix back on this circuit..
  15. A

    Timing coil transistor output to transistor?

    Thank duke37 and john monks, sorry for false AC signal that i wrote, here my drawing. John, yes i want to used timing sensor as an input to cdi controller, using PIC16F628. May i know how the Darlington arrangement it is? I used 4N33, and simulated the opto output using LED, but fail to work...
  16. A

    Timing coil transistor output to transistor?

    would this circuit be ON the transistor when voltage on +, and OFF when -?
  17. A

    Timing coil transistor output to transistor?

    Hello, i have a question, how can i on off an transistor using low ac voltage? or maybe there have another method ? I plan to get motorcycle timing signal from stator coil to trigger diy dc-cdi unit..
  18. A

    Android-controlled electricity source

    Bluetooth control is simple one, arduino will help better. I have done android control arduino via bluetooth. The hard part is app that you need to build to run it. Here take a look on this web http://digitalhacksblog.blogspot.com/2012_05_01_archive.html
  19. A

    Programmable CDI

    compare to this original LC135 yamaha cdi, there have transformer to generate high voltage right?
  20. A

    Programmable CDI

    Hello, i try to do an programmable cdi, referring to http://www.electronics.gompy.net/cdiscoot/index.html website, but it this circuit is CDI or TCI? because it dont have any high voltage circuit..
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