![]() ![]() To connect the potentiometers (orange wires in figure 3), connect them to one of the Arduino analog pins and to GND using a 10k resistor. To connect the buttons (white wires in figure 3), connect them to one of the Arduino digital pins and to 5V using a 10k resistor. To connect the joystick to the Arduino, you can use a scavenged female game port and then solder some wires on it. I found a lot of helpful information while reading this blog. To do so, I used the pinout and a multimeter to determine which button was connected to which pin (figure 1).Īfterwards, I had to connect the pins to my Arduino. In order to use a joystick to control my robotic arm, I needed to determine which pin of the game port was in charge of doing what. At the end of the support, I tapped some foam to reduce the wiggling of the second segment of the arm (figure 5). To do so, I drilled a few matching holes in two pieces and attached them together with four bolts (figure 6). Since the the first segment has a bigger load, I decided to attach another piece to support it. The holes are used to attach the segment to the shaft of the other servo (figure 3 & 4). The middle hole is at 2 cm from the bottom edge. Next, drill three holes at the bottom of the piece. ![]() The first segment is 30 cm long and the second one is 20 cm.įor each segment, cut out a rectangle 2 cm from the edge to fit your servo. Coroplast is weaker than wood but it is much easier to cut. To glue it, I used cement glue (figure 2). For the first segment, I used two opposite layers of coroplast that I glued together (figure 1). The arms were hard to make without using laser cutting technology. I have done my best to be very clear with all my work, but i do apologize if at any moment you have a hard time understanding. Just a heads up, English is not my first language. So, if you want to learn more about how to make a robotic arm, code it, hack a joystick to control your arm, make a bluetooth code to receive the programs and code an android app, you are at the right place! The arm will then repeat the sequence over and over. After, you can choose, on the app, the program you want to run. By programmable, I mean that you can, through an android app I coded, save the positions of the arm under a program. Finally, the robotic arm is fully programmable. So, my goal while writing this guide was to make it as complete as possible to help you build your own robotic arm! Also, I made my robotic arm without using 3D printing or laser cutting which make it very easy to build. I know there are many Instructables out there about robotic arms but, while doing my research, I always had some questions left after reading. ![]() Hi everyone, in this Instructables, I want to share how I built my Robotic Arm. ![]()
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