ph2t

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  • February 12, 2003 at 5:32 pm in reply to: Mod idea – variable speed #41310
    ph2t
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    hopefully i’ll have some video of my work soon………:approve:

    February 12, 2003 at 5:29 pm in reply to: Do multi cell bits have better range? #41309
    ph2t
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    uA, I have a daul cell clone that has better range that my non-modded originals. Increased torque as well.

    Cheers,

    ph2t.

    February 12, 2003 at 3:25 am in reply to: Mod idea – variable speed #41328
    ph2t
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    the proof is in the pudding as they say.:D

    February 11, 2003 at 8:46 pm in reply to: Mod idea – variable speed #41352
    ph2t
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    I’m actually working on a proportional controller emulator for both speed and steering. Without going into too much detail you can see the original discussion here.

    Here’s a schematic of what I have developed so far.
    proto1.jpg

    February 11, 2003 at 6:18 am in reply to: Bit-G clubs in Melbourne #41392
    ph2t
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    • Posts: 2088

    Lets see if we can get enough people and see what happens…

    Cheers,

    ph2t.

    What area are you guys generally? I’m near Moorabin.

    February 10, 2003 at 5:49 pm in reply to: BCG massive power range boost!!! #41448
    ph2t
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    Hey uA, great idea. You obviously saw my post at tinyrc about the same theory. I am working on a proportional controller for my Bit and I’m going to have to gut the original controller anyway. So I think that I will go with the 6V scenario using a 4*AA battery pack in a totally new box. I was thinking of using a 3.3V Zener (IN746A) for my design anyway see Proportional Controller .
    If you add a power switch to your controller you may save some battery life.
    Cheers,

    ph2t.

    February 6, 2003 at 6:07 pm in reply to: Controller Frequency #44815
    ph2t
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    Guys, the frequency of the Transmitter CAN be changed by changing over the crystal with another one. BUT you must tweak the coil on the receiver unit in your Bit to match the new frequency of the transmitter.

    The main issue is:

    – you can only choose a frequency “close” to the original. EG: 35MHz -> 30MHz. Why? Because the inductor coil on the reciever board can only “tune” the frequency so much. Choosing a new frequency that is futher from the original would require you to replace the coil on the receiver with a higher inductance one.

    February 6, 2003 at 6:07 pm in reply to: Controller Frequency #41663
    ph2t
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    • Posts: 2088

    Guys, the frequency of the Transmitter CAN be changed by changing over the crystal with another one. BUT you must tweak the coil on the receiver unit in your Bit to match the new frequency of the transmitter.

    The main issue is:

    – you can only choose a frequency “close” to the original. EG: 35MHz -> 30MHz. Why? Because the inductor coil on the reciever board can only “tune” the frequency so much. Choosing a new frequency that is futher from the original would require you to replace the coil on the receiver with a higher inductance one.

    February 6, 2003 at 5:35 pm in reply to: Some battery charging consideration #41670
    ph2t
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    hey efarel, that charger idea using an LM317 is great! I take it you are going to use it in constant current mode. Couple this with a 555 timer circuit and you will have a pretty could charger. You could then mod it for selectable voltages (for all the dual, triple cell mods out there…..).

    keep up the good work!

    ph2t.

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