November 12, 2013 AT 6:08 pm

How to make a trainable robotic arm!

Customer Projects Arm-Learning

How to make a trainable robotic arm! @ The Adafruit Learning System. Teach this arm to move with your own hands. Robert writes –

The Baxter robot can be easily trained to perform actions by simply moving his arms and grippers with your own hands while he records the motions. Analog feedback servos provide a way around the complicated kinematics necessary to make robotic arms operate efficiently. Interacting with a robotic arm is lots of fun and being able to actual teach it to carry out tasks is futuristic-cool.

You can build one of these trainable robotic arms because Adafruit sells the crucial analog feedback servos that make this technology possible.

3D printing allows anyone to make robotic parts. We will be printing an arm and gripper for this project, but you could swap out the servos in an existing robotic arm also.

For more details on the servos, check out the About Analog Feedback Servos write up.

Learn more!


1404_LRG
1404parts_LRG

Analog Feedback Servo – It looks like a servo, it acts like a servo, but it’s more than just a servo! We got a factory to custom-make these classic ‘standard’ sized hobby servos with a twist – the feedback (potentiometer wiper) line is brought out to a fourth white wire. You can read this wire with an analog input such as those on an Arduino, to get the servo’s position. That information can be used in robotics to improve stability or even allow ‘recording’ of servo motion.

Check out our example Arduino sketch which demonstrates how to record motion data to the EEPROM and then play it back when a button is pressed. Comes with a range of horns as seen above.

Technical Details:

  • Dimensions: 39.55mm / 1.5″ x 39.55mm / 1.5″ x 19.5mm / 0.7″
  • Max Dimensions: 55.36mm / 2.1″ x 43.34mm / 1.7″ x 19.5mm / 0.7″
  • Wire length: 13cm / 5.1″
  • Torque: 90.26 oz*in / 6.5 kg*cm
  • Speed: 0.21 sec/60 degrees
  • Weight: 46 grams
  • Dual ball bearing
  • Plastic gearbox

In stock and shipping now!


“D is for Diode” – Circuit Playground Episode 4 is out now! CLICK HERE TO WATCH!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground”Adafruit’s Apps!



No Comments

No comments yet.

Sorry, the comment form is closed at this time.