LAD ROBOTIC HAND v2.0, COMPLETE KIT (ARDUINO CODE AND INSTRUCTIONS-EASY TO PRINT)

Hi fafabode, I’m really happy you are getting the best out of this creation. ABS is a good material to print. Please continue. You are nearly there!

Well done friend. It is a great achievement to build something from scratches, and you have done it. The potentiometers are there to provide to the microcontroller so that the fingers can be positioned precisely. The arduino code will only work if the potentiometers are there, and the hand has been calibrated as per the procedure shown on the video and/or the “LAD_RoboHand_Arduino Control_v1.1_Instructions Manual.pdf” document. In this way, the code will be able to execute the pre-programmed moves, like opposing the thumb to each one of the rest of the fingers. Without the potentiometers, this will not be possible, or at least not precisely.Try to get the potentiometers friend, and hack the servos in the way it is shown in the “ 5 Fingers LAD Hand- Assembly Instructions Rev5.pdf” document. But otherwise you have done a great job so far. All the best.

Hi there Fafabode. Good to hear that you’re moving along and that you are enjoying the journey. The hand V2 has more degrees of freedom , it is faster, stronger and heavier than V3, and this is because it has stronger and heavier servo-motors located in the forearm to produce movements of flexion/extension of fingers 2, 3,4 and 5, and small servos inside the palm to produce movements of abduction/adduction. The fingers mechanism is more elaborate and has a parallelogram. This mechanism along with small potentiometers located on each knuckle makes the positioning of each finger more accurate. Hand v3 is more simple in construction, it is lighter and is more aesthetically pleasant, since it is a copy of my own hand. All actuators are located inside the palm, and can only perform flexion/extension movements of fingers 2,3,4 and 5. The silicone skin makes it more realistic and improves the frictional coefficient, which improves the grip. Both hands have the LAD Robotics signature feature, which is the precise movement of the thumb in flexion/extension and abduction/adduction that makes the opposition of the thumb to the other four fingers possible.