<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">The servos that you are using - the FS 100 are very low on torque. They have only 24 N cm or 34 oz in in US units. You would need to either make the frame MUCH lighter in weight or use more powerful servos or both.<br><br>I don't know what is available in your area, but there are servos that are not super expensive that have a much higher torque.<br><br><span>See <a target="_blank" href="http://www.servocity.com/html/hs-635hb_high_torque.html">http://www.servocity.com/html/hs-635hb_high_torque.html</a> which has 83 oz in at 6 volts (or about 2.5 times more torque)</span><br><span>or <a target="_blank" href="http://www.servocity.com/html/hs-985mg_super_torque.html">http://www.servocity.com/html/hs-985mg_super_torque.html</a> which has
144 oz in at 6 volts (or about 4.2 times more torque)</span><br><br>Thanks,<br><br>Glenn<br><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">----- Original Message ----<br>From: Francesco.Decomite <Francesco.Decomite@lifl.fr><br>To: dprglist@dprg.org<br>Sent: Monday, June 25, 2007 3:06:24 AM<br>Subject: [DPRG] help with 6-legged walking robot<br><br><div>Hi,<br>I am trying to build a siw-legged walking robot. No problem with the <br>programming part : using Microchip pic4620, I can control effectively 12 <br>servos, and tested the program with those 12 servos (see picture : <br><a target="_blank" href="http://www.flickr.com/photos/fdecomite/526512679/">http://www.flickr.com/photos/fdecomite/526512679/</a>)<br>Then I build on leg (picture : <br><a target="_blank" href="http://www.flickr.com/photos/fdecomite/526513399/">http://www.flickr.com/photos/fdecomite/526513399/</a>), everything still ok<br>The problem arises when I put
everything together :<br><a target="_blank" href="http://www.flickr.com/photos/fdecomite/539468397/">http://www.flickr.com/photos/fdecomite/539468397/</a><br><a target="_blank" href="http://www.flickr.com/photos/fdecomite/539369120/">http://www.flickr.com/photos/fdecomite/539369120/</a><br><a target="_blank" href="http://www.flickr.com/photos/fdecomite/539483411/">http://www.flickr.com/photos/fdecomite/539483411/</a><br><br>The machine seems to be too heavy, and the servos seem to ask for much <br>more power I can give them.<br>Any hint on how to control this power demand ? SOme mechanical or <br>electronical solution, or at list some pointers ?<br>Thanks !<br><br>-- <br>Francesco De Comite<br>tel (33) 03 28 77 85 72<br>fax (33) 03 28 77 85 37<br><a target="_blank" href="http://www.lifl.fr/%7Edecomite">www.lifl.fr/~decomite</a><br><br>_______________________________________________<br>DPRGlist mailing list<br>DPRGlist@dprg.org<br><a target="_blank"
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