
dalex
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
There is high current motors on the feet plus other motors used in the arms and hands ,plus cpu on the main board and sensors.
PLUS second part you will see is that the main pcb on the robosapien needs 6 volts
Can find the link on the teardown of the robosapien models is shows it needs 6 volts on main board for it to work.
PLUS not very stable,i am electronic engineer
Voltage divider is great for analog circuits,becuase it only uses very low current.
http://www.ebay.co.uk/itm/LM2596-DC-DC-Step-Down-CC-CV-Adjustable-Power-Supply-Module-Output-DC-1-5V-35V-/300882588078?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item460dfff1ae
They're rated to 2A each, without an additional heatsink.
What you will get is 12 volts to robosapien board and robot and it will smoke it,now there is a easy fix that will work
i did it on mine tie the 2 red wire together and the 2 black wires together to get 6 volts at double the current.
IF its hard i can try to explain it better.
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?
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.
some designs use different colors.
I think i made a mod to the board or cut the wires and add them together
Sorry to labor the point, but I want to be sure I'm not going to smoke my other Robosapien.
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
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
p.s. Robosapiens can be picked up from across the channel for 5 to 10 pounds. Already have a replacement coming.
ALSO in college since i am electronic engineer i made a EEG design using a scope
BUT can post it as a zip file.