QR Code Generator icon QR Code Generator Create customizable QR codes for ARC, display/scan via Camera Control, trigger scripts on recognition and save decoded text to variables. Try it →
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:)


ARC Pro

Upgrade to ARC Pro

Stay at the forefront of robot programming innovation with ARC Pro, ensuring your robot is always equipped with the latest advancements.

Author Avatar
Netherlands
Twitter YouTube
#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.

Author Avatar
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

Author Avatar
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

Author Avatar
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