People with some experience with low-cost robot arm with 9G servo may already know that they comes with large random error (~3 to 4 mm as least). So the pick and place environment need to be carefully controlled and optimized to ensure every place is success.

It is difficult to explain all set-up in text. Let's show how it work by video:

https://youtu.be/XG6HE-G8L08 https://youtu.be/oZ83OPl6T1I

###Black Magic involved

1. To ensure a successful Place, a funnel shaped base was included to the Wire Hold in order to increase the tolerance of error.
2. To ensure a successful and consistent Pick, The top and base of Wire Hold is designed so that it would slide into the middle of the claw when force was applied.

##Open-source Firmware available here: https://github.com/lamjonah/ThisArm_Firmware