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9

YES! Philippe Hurbain (Philo) has put together a great and very detailed write-up on those and many other LEGO 9V electric motors. You can find it here: LEGO 9V Technic Motors compared characteristics Your current draw for that specific motor @ 9V is: No load: 65mA Loaded (3.6 N.cm): 310mA Loaded (6.0 N.cm): 480mA Stalled (11 N....


4

I eventually made my design available for download over at Shapeways with a CC BY-NC-SA license. I tested it at my local maker space in PLA on a µDelta 3D printer. For the electrical contacts, I tried with pins scavenged from a DIP IC socket like Cyril suggested but the pins were a bit fickle and easily broke. I ended up cutting a sheet of conductive metal ...


3

I make a print (with silicon) of the Lego PF socket, in 2 halves. I just need the C1 and C2 electrical contacts, so I'm just dealing with them, but you can go for the 4 contacts. So in the bottom half, I insert two small pins from a DIP socket (for integrated circuits) in 2 tiny cuts I do with a kind of bistoury and insert the 2 pins in those two slots. ...


3

If anyone is interesting in whether the battery can be replaced, the answer's yes-ish. As you can see in the picture, it's powered by a CR2032. The only hurdle here is that it's welded to the contacts. Not insurmountable though. Also it was glued (or ultrasonically welded) shut, I had to put the orange part in a vise (with some cardboard to protect the ...


1

If you are planing on physically touching the brick that will then touch the screen then you could use a trick similar to that used by capacitive gloves There just needs to be a conductive medium between your finger and the screen so you could add a thin strip of copper tape or anything metallic to bridge the gap between your finger and the touch screen ...



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