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Edited: May 13

Auto3DClippy Wiring

I was testing my Auto3DClippy with my Arduino, and I was having trouble getting it to work with only 5V. I experimented with 9V and 12V power supplies and found 12V to be most reliable. I designed a simple circuit that only requires a wall plug to 12V converter, a breadboard, and some duponts. This circuit will still let the Chameleon control the servo, but also provide the servo 12V of power. Side note: Be careful with the signal wire. My signal wire got disconnected and my servo horn rammed into the Auto3DClippy and broke the horn. Trying to get Amazon to exchange it now...

I hope this helps if anyone else was having issues with 5V.

EDIT: Tinkercad is reviewing this circuit diagram to make it public. For now here's a screenshot:

12 answers0 replies

12 Comments

Bill

May 26

Ok... here's a video of the voltage upgrade for any servo. https://www.youtube.com/watch?v=zAZ3Hr47dWc In the description of the video are the Amazon links to all the parts.

Bill

brad miller

May 13

None of this kind of wiring should be needed, I would assume that with the correct servo this should run right off the board. At least that's how it is presented

3dcoded

May 13

Replying to

I thought that too, until I tried controlling my servo with 5V, and it jittered, but didn't move. The Amazon page says it needs at least 6.6V to run. I'm not an electrical expert, so I'm still very confused about the voltages.

brad miller

May 13

Replying to

it sounds like maybe he had a link saved for the servo and the seller changed the item out. that kind of thing can happen.

Bill

May 26

Replying to

Amazon changed the link I posted to the 5V servo model. There are many variations of the servo that all look the same but have different specifications. The only one that will work without a buck booster for the higher power requirement is the 5V one originally linked... however, that link now takes you to a random servo.

The solution is found here: https://www.youtube.com/watch?v=zAZ3Hr47dWc

Similar to 3DCoded's instructions, except using an inexpensive buck booster to allow for any voltage.

The buck converter used in the video can be found here: https://www.amazon.com/dp/B081N6WWJS

As a bonus, you can use an additional one to drop the voltage for the Sparkfun I/O Expansion (which is 3.3v) for the Filament Runout Sensors.

Bill

Trent B.

May 13

The link from the OP doesn't work, BTW.

3dcoded

May 13

Replying to

Thank you for pointing that out. I added a screenshot (Tinkercad needs to review my circuit diagram before making the link work)

wjsteele

May 13

Oh, maybe Amazon is playing games... I will update it this evening.

Bill

wjsteele

May 13

There are different servos, some run on 5v while others use higher voltages. The one I spec is the 5V servo.

Bill

3dcoded

May 13

Replying to

I'm still confused about the voltages for the servo. The one from the link in Round 1 of the MK4 updates post says it reaches 20KG/CM at 7.4V. Mine didn't even move at 5V. I may have gotten a faulty unit, but it worked fine at 9V and 12V. When I get a new one (the horn on the old one broke), I'll see how it works with 5V.

brad miller

May 13

Replying to

The one you linked is not a 5v servo. It is a 6v-8.4v servo.

Matthew Tratz

May 14

Replying to

I am also having issue with the servo. It appears that the servo will try to cut the filament but is not quite able to do it. This is the product info from the servo that I purchased. At first I thought I put the blade to far into the mount so printed 2 more with more and more blade exposed to try and give the servo as much blade to work with. Is the expectation that the server is running off of 5v? I don't think this is the right servo if true.

Here is a link to a 4.8v to 6.6v version: https://www.amazon.com/gp/product/B09JFSJ32M/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&th=1

Edited