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Asked — Edited

Continuous Rotation Micro Servos?

I want to build the BB-R2 from Mr. Baddley.   I want to use the IO-Tiny and a 7.4V lithium battery.   I need three continuous rotation micro servos like the FS90R. 

FS90R

However, I need it to run with the voltage up to 7.4V.   Will the 7.4V lipo "fry" the FS90R?  Is there a 7.4V continuous rotation micro servo?


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PRO
Belgium
#1  
hi

these are 6 volts servo's . i dont think they will last long .
PRO
Synthiam
#3  
Those little servos don't last long when using regular voltage haha - they're super terrible. The only ones I know of that are similar in size are the ez-robot micros and they use 7.4v and have metal gears - and stall protection and overheat protection and such.
#4  
In the end I found that I had bought some of your 5v regulator cables in the past. I also found some additional ones on eBay that are designed for mixed RC when someone has a set up 7.2 and 5 V servos on the same radio control system. I was able to test it with the regulator cable last night and it ran great I did not get hot. But that was before I had run it on the D0 output of one of my io tinys. The servo got hot and channel D0 appears to be blown but channel D1 still works fine.
PRO
Canada
#5   — Edited
Hi @mstephens_42

The EZ-Robot micro servos may be able to be modified to use in continuous rotation applications. I will have to check if the stall protection activates and disables the servo after a few seconds. 

Otherwise, I would suggest continuing to use third-party continuous servos with the 5V inline regulator as you suggested.

*Edit: Actually come to think of it Feetech does have 7.4V rated continuous servos. They are called FS90R. I bought them at Robotshop I believe. I've successfully used them on my Magnedrive robot.