Large servos for biceps

jeffrey morris

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Jul 17, 2022, 4:13:15 PM7/17/22

to InMoov

Which large servos for biceps should I buy at Amazon? I don't trust EBay and AliExpress.

gael langevin

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Jul 17, 2022, 6:10:09 PM7/17/22

to jeffrey morris, InMoov

Hello,

You can find a list of servos for the bicep and other parts in the Hardware and BOM page.

http://inmoov.fr/default-hardware-map/

Gael Langevin

Creator of InMoov

InMoov Robot

@inmoov

Le dim. 17 juil. 2022 à 22:13, jeffrey morris <jeffreym...@gmail.com> a écrit :

Which large servos for biceps should I buy at Amazon? I don't trust EBay and AliExpress.

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jeffrey morris

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Jul 23, 2022, 9:11:12 PM7/23/22

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I found a servo adapter on Thingiverse that lets me use standard-size servos in place of giant-scale servos. I'm not sure if a standard servo can move the arm where giant-scale servos are used.

gael langevin

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Jul 24, 2022, 2:22:56 AM7/24/22

to jeffrey morris, InMoov

Hello,

The arms are heavy on the small gears of the servos. I would not recommend replacing with standard servos the omoplate servo, shoulder servo and bicep servo. All the other servos could be replaced with standard because they require less effort.

From my iPhone, Gael

Le 24 juil. 2022 à 03:11, jeffrey morris <jeffreym...@gmail.com> a écrit :

I found a servo adapter on Thingiverse that lets me use standard-size servos in place of giant-scale servos. I'm not sure if a standard servo can move the arm where giant-scale servos are used.

To view this discussion on the web visit https://groups.google.com/d/msgid/inmoov/286f9f46-bd2d-4751-a137-a9707a3e7efbn%40googlegroups.com.

jeffrey morris

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Jul 24, 2022, 5:45:45 AM7/24/22

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I already have TS-70 servos with metal gears and ball bearings. They have 133.3 oz-in torque. It looks like Tower Hobbies stopped selling TS-80 servos.

jeffrey morris

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Jul 25, 2022, 5:46:45 AM7/25/22

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I found out that there are standard size servos that have up to 35 KG of torque. Amazon has BETU 2Pack 25KG High Torque RC Servos for $35.

Corey Johnson

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Jul 26, 2022, 8:42:56 PM7/26/22

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Do all 8 of the HS805BB servos listed for the Arms and shoulders(Left, right) need to be modified for potentiometer?

jeffrey morris

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Jul 26, 2022, 9:26:55 PM7/26/22

to InMoov

The BETU 25KG High Torque RC Servos worked well. They can lift the forearm. I'm surprised that they are continuous rotation servos. The only mod is to remove the potentiometer from the servo but there are three red wires connecting the potentiometer to the board inside the servo. My suggestion is to cut and solder one wire at a time.

gael langevin

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Jul 27, 2022, 2:42:14 AM7/27/22

to jeffrey morris, InMoov

Hello,

Yes they all need to be modified with the potentiometer extracted.

From my iPhone, Gael

Le 27 juil. 2022 à 03:26, jeffrey morris <jeffreym...@gmail.com> a écrit :

The BETU 25KG High Torque RC Servos worked well. They can lift the forearm. I'm surprised that they are continuous rotation servos. The only mod is to remove the potentiometer from the servo but there are three red wires connecting the potentiometer to the board inside the servo. My suggestion is to cut and solder one wire at a time.

To view this discussion on the web visit https://groups.google.com/d/msgid/inmoov/35644887-b45b-4ce4-8bb8-6efc60d0348bn%40googlegroups.com.

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