I built a biped robot but I found out that the servos that came with the EZ-Robot kit are not strong enough. The hip servos can't lift the legs up. Any suggestions for stronger servos?
By jeffmorris
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I found out that my homemade biped robot weighs about 2-1/2 pounds.
I started building a new version of my homemade biped robot out of 1/4" ABS (I think) plastic only. I cut out the parts on my CNC router.
New version of my homemade biped robot. The servos that came with the EZ-Robot kit aren't powerful enough. I had to order 240 in-oz servos from Pololu website.
http://www.pololu.com/catalog/product/1057
Whoa that is a nice biped frame. Great work, i'm impressed. Did you CAD the items yourself?
The heavy duty servos may need an alternate power source. The Voltage Regulator on the EZ-B may not be enough. If your battery source is no greater than 6volts, then you can power those servos with direct battery power. To do this, simply take 3 wire peripherals cables and keep the White and Black wire (signal and gnd), but cut the RED at the female plug. Connect the RED wire to the 6v battery source directly
For batteries, i would recommend a light weight LIPO with high amps.
Doesn't the ground need to be spliced and also go to the ground on the battery? This way all that current is not grounding to the ezb?
Ultra light high power 7.4v lipo http://www.ebay.com/itm/Turnigy-Nano-Tech-Lipo-2S-2200mAh-7-4v-25-50C-/320986381698?pt=Radio_Control_Parts_Accessories&hash=item4abc477d82
Just under 4 ounces I believe pack wire and connector
You need a common GND, so might as well use the GND from the EZ-B. You can splice in the GND also, like my example with the +5, but it's just more work.
I used AutoCAD to draw the parts, used Cut2D to create code for my CNC router, and used Mach3Mill to cut out the parts on my CNC router. The EZ-Board V3 should have a jumper that lets me use separate power source for servos.
DJ Sures, I don't like the way the forum is set up. The messages are not in date/time order.