dalex
Belgium
Asked
— Edited
I managed to destroy one Robosapien board by putting 6v where it shouldn't go
I'm going to use the 3.3v supply on the ez-b to power my other Robosapien, but now I'm a bit nervous about blowing it.
What resistor should I use to drop the voltage from 3.3v to 3.0v? I read up on Ohm's law, but it seems to depend on how many amps are being pulled. Is that right?
I need to run two cables from the 3.3v supply on the ez-b to the two 3.0v inputs on the Robosapien board.
Any thoughts?
p.s. electronics novice, don't underestimate how little I know
The board will power the EZB ok,only you dont need since the EZB has its own regulator to drop 6 volts to 3.3 volts for EZB
@dalex Honestly, I have no idea. Battery life is still acceptable on my 5000mAh LiPo however I've never checked for length of life with and without the monitor attached. Even if it did shorten the life it's a small price to pay for protection against under voltage LiPo cells
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DALEX i agree with RICH (YES) it doesnt shorten the life of LIPO only thing that shorten the life is charging and discharging (using it in a robot or any other design) cycles
@robotmaker I smoked it after only attaching one 6v battery, thinking exactly along the lines you suggest: just put one 6v battery in each foot and put them in parallel rather than series.
Maybe I got the polarity wrong? Though the circuit should have some kind of protection, since people put batteries in the wrong way all the time. So I don't understand what I did to break it
On my robots there is a brown plug with a purple and a red wire (plus two white ?sensor? wires). There is also a white plug with a black and a purple wire (plus two green ?sensor? wires). From what you say, I should be able to plug the two 6v battery packs, in parallel, into one of these plugs. Is that right?
p.s. I see now that the two purple ones are joined on the board, leaving only the red and black wires with 6v across them!
That what i said it would give you 12 volts reason you smoke the board. Should look at getting a simple dc meter ,its easy to use even if non engineer or tech
I need to look at my robosapien model i have it depends mostly on the color wires you are using ,you always check the positive on 3 volt battery and trace where is goes and same with the ground.
You need for parallel batteries together for it to work ,reds together and blacks together some designs use different colors.
I think i made a mod to the board or cut the wires and add them together
The battery is rated at 6v, but it says 6.4 on my voltmeter. That wouldn't be enough to smoke it would it?
Sorry to labor the point, but I want to be sure I'm not going to smoke my other Robosapien.