This is by far the most tedious and time consuming step of the project. Make sure you have plenty of fishing line, superglue, and zipties before proceeding. Start by supergluing the grey fingertips to each black finger. Then superglue and ziptie each motor in the exact arrangement pictured above. The top right and middle motors both turn counterclockwise, while the rest turn clockwise. Feel free to test your own arrangements but if you follow my layout you shouldn’t run into any problems.
Once all of the superglue has hardened you can move onto threading the fishing line. First you will want to tie the line to the last hole in the motor attachment. You will want to make sure the knot you tie can withstand a lot of tension before threading it through the finger. If the knot comes undone after threading through the finger you will have to start over. Once you have a strong knot and plenty of extra slack line, thread the line through the motor’s corresponding finger. In my picture, the motors are connected so that the top left goes through the second finger, bottom left through the first finger, middle through the fourth finger, bottom right through the third finger, and top right through the fifth finger. Once threaded, I was unable to create a knot that could slide down the line into the tip of the finger. If you know how to do that, go for it. However, another solution is to bring the line down and wrap it around the top knuckle multiple times before tying it. You will want to make sure there is some tension between the finger and motor when you tie it, so it may take a couple tries to get it right. Once you have all five lines threaded and tied, congrats! You completed the hardest part of the project.
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Finally you will want to insert some wire into the female headers of the servo motor wires. Red should be connected to 5V, brown to ground, and orange to a digital output pin. I soldered and heat shrinked all my 5V wire together as well as my ground wire in order to only have one wire for power and ground connected to the breadboard.
Source: https://t-tees.com
Category: HOW
