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Unsoldering the battery board from the holder ez430 RF2500

Mina Ibrahim
Prodigy 60 points

Good morning all,

I purchased the TI ez430 RF2500 wireless development board. 
I was under the impression that I can only use the removable target boards as follows:
The first to be attached to the USB debugger and so to the PC as normal.
The second is to be completely detached and placed inside a very small robot with minimal dimension limitations.
However, when the board came, it had the other target board, attached to a battery board and this battery board is soldered to a relatively (in terms of application) huge AAA battery holder.

So my question is, had any of you used only the other target board without the need of the battery holder or saw a project that done so?
or if not, is it possible to do so? if yes please tell me how and how can i power up the board after detaching from the battery holder?

Thank you so much in advance and again have a great morning.
Mina

  • 0
    Guru 227245 points

    Mina Ibrahim said:
    please tell me how and how can i power up the board after detaching from the battery holder?

    What about putting the same supply voltage into the same wires that were originally going to the battery holder? Without any power supply, the target board surely won't work.
    E.g. if it was a two-battery holder, put 3V DC to the point where the batteries were attached.
    I don't think that a certain voltage tastes differently depending on whether it comes from a battery holder or any other power supply. At least not much. Of course there are subtle differences: on power-on, voltage on a battery almost instantly appears on VCC, while form a switching supply, it may have a longer rise time. Also, there might be a different level of noise or ripple on VCC and GND.
    For many if not most applications it makes no difference. On some, additional filtering of the supply voltage might be necessary, or maybe an R/C combo on the reset pin (or a larger C).

  • 0 in reply to Jens-Michael Gross
    Prodigy 60 points

    Thank you so much for your reply, It was useful and I have to also compliment on the way it was written .. very simple but intresting :)

    Anyway, sorry if my question was a bit naive, I am actually a newbie in microcontrollers, as i a originally a mechanical engineer. Thank you so much again.

  • 0 in reply to Mina Ibrahim
    Guru 227245 points

    Mina Ibrahim said:
    i a originally a mechanical engineer

    Everyone has started from a different place than the guru chair :)
    Hmmm, translating the voltage to mechanical terms: a pound is a pound, no matter what's pressing you down.

  • 0 in reply to Jens-Michael Gross
    Prodigy 60 points

    Jens-Michael Gross said:

    Everyone has started from a different place than the guru chair :)

    This is exactly where I am right now, as far as it can be away from any place that I can call home ... well technically speaking of course.

    Right now I am in the part of the project where I have to initialize the controller, right codes, do electric wiring and wires routing and all these are new for me .. 

    however, If i managed to complete all this while still in one piece, I will fit the whole thing to my design and start being a mechanical Engineer again .. 

    wish me luck 

  • 0 in reply to Mina Ibrahim
    Guru 227245 points

    Mina Ibrahim said:
    If i managed to complete all this while still in one piece, I will fit the whole thing to my design and start being a mechanical Engineer again

    Well only if you have hand-crafted every piece of your work, you can really be proud of it. Even if it should prove to be a failure at the end :)

    Mina Ibrahim said:
    wish me luck

    May the juice be with you. (Spaceballs)

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