Belgium
Asked — Edited

Dropping 3.3V To 3.0V

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:)


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Netherlands
#17  

It won't. The voltage is probably a bit higher because there's no load on it.

#18  

THANKS NEIK that is correct ,mostly when you check a battery it needs a load to get the correct voltage out.

Belgium
#19  

Thanks guys, learning a lot.

#20  

Couple of things DALEX ,wednesday can check my robosapien to see how i wired it.

Second can sell you the main board for robosapien robot,i only have one ,since i just used a few other parts to restore one i boughtand dont need the board was going to sell on ebay

Belgium
#21  

Using your advice, I have my other Robosapien running with 6v rechargeable batteries in each foot!

#22  

OK great glad it works,i have 9 robosapiens and looking to get femisapien at about $400

CHECK OUT MY ROBORAD V2 showcase ,also bought a special EEG mind control headset plus free software to control robosapien models and other wowwee line of robots and my rovio robot

Belgium
#23  

Is it an emotiv headset? That's what I do for my day-job, analysis of brain signals. Last month I've been working on analyzing data from the emotiv headset in real-time, using some new methods, and I thought "hmm, I wonder if down the track these methods could be used to control a robot?" That's how I started looking around for the latest robot platforms.

p.s. Robosapiens can be picked up from across the channel for 5 to 10 pounds. Already have a replacement coming.

#24  

yes its emotiv headset and i have a MINDWAVE headset too. will look for the free software to control the wowwee line.

ALSO in college since i am electronic engineer i made a EEG design using a scope