jonnew / twister3 Goto Github PK

Small documentation point:

The three threads in the rotor based that are presumably made for set screws that hold the alignment plate in place are not mentionned in the manuscript.

It would be nice to mention that they should be put before trying to load the bobin or before twisting the tetrode (and they should be untightened to align)

Hi Jon,

My wire colors are different from your control box figure (Figure 2). Can you provide guidance as to which motor wire (cyan, blue, red, black) goes to which pin (A2, A1, B1, B2)? Sorry if I missed this somewhere in the manuscript.

Thanks
Max

The linked page for the spring top (sculpteo) says it is unavailable. If I upload the STL to their website, it works, but they do not have the same material, PEBA2301, listed. Is there any alternative? I am guessing the material properties are fairly critical for this flexible part.

This is not really an issue but some feedback on the assembly process using the specific material provided by the openephys store. Globally the instructions are great.

• Figure 6 step 3 “cut two piece of 5 cm thread” doesn’t exist since OE ships M3 screws that have the proper size
• Having the pinout for the motor included in the package would be nice (wires have different colors than the motor used in the manuscript). An extra note on how to reverse the direction of the motor (by swapping 2 wires) could be nice (the forward direction of the motor you use in your example videos might be the backward direction of the motor given provided by OE)
• When I tried to press the spring rotor on the additional magnets on the alignment plate (Figure 7 step 6), the 4 magnets went deeper in the alignment plate instead of going into the spring rotor. I would suggest to put the spring rotor above to align the magnets, but then rotate the assembly and press the magnets inside the spring rotor once it is separated from the alignment plate.
• The bobin assembly is not really described. The Figure 6 step 4 is enough but I would add a warning to explain how to put the magnets (like suggested in Figure 7). I made the mistake of putting the bearing first and then try to put the magnets by hand (because I hadn’t read figure 7).

I mounted a magnet with tape to the main post. This allowed me to clip the four wires before the cut, and have them pinned somewhere while I remove the twisted tetrode.

This is raw and not perfect, but I am thinking it would be a nice add on to have a few magnet bars that are close enough to the wires to be able to pin them. It's only one afternoon of experience, but it helped find and pin the wires back to the new clip. It reduced a bit of tangling without too extra much effort.

Here are some pics.

Here's the close up, the post is a bit too far away so the pinning does create some tension in the wire, I think it would be nicer if it was closer and it had multiple points (a few magnet bars instead of one circular magnet)