3. System designing
4. Structure designing
About 3D CAD
5. 3D printing
6. Making servo shieldNow Preparing
7. Making wiring harnessNow Preparing
8. AssemblingNow Preparing
9. Basic structure of Arduino sketchNEW
10. Creating motions
1. Over view
We build simple biped a robot with 4 motors (servo). The appearance is this picture, and it walks like this movie.
・Servo Micro2BB x4
・Arduino UNO Control board
・Servo shield (DIY with Sanhayato universal board)
・NiMH AA battery x4
・Servo brackets and case made by 3D printer
You cannot understand what they are now, but I will explain them.
Firstly, what type of robots do you want to make? At the first stage You can't make some circuits by soldering or some parts by 3D printer. You should draw your robot on paper. I say "Ponchi-e" about such a drawing. It may be the best time to image the robot you want to build. I drew many Ponchi-e.
3. System Designing
・Servo x4 GWS Micro2BBMG
・9V Battery Power Supply for Arduino
・NiMH Batteries AA 1.2Vx4 Power Supply for Servos
General DC motors rotate continuously if inputed constant voltage. The servo sustain specified angle. The angle value is send as 0 - 180 degrees from Arduino.
Arduino imputs angle 0-180° to servos. Actually,it trasmit pulse width according to angle.
The servos of NX09 GWS Micro2BBMG
Arduino UNO works in 9V battery. In case of operating servos, general alkaline and manganese batteries are not enough in capacity of current, so that we use NiMH batteies.
4. Structure Designing
The brackets for servos and control boards are made with aluminum plate bended and cut or 3D printed. Previously, I made brackets by bending aluminum plate. It is hard to make it, so that we make one by 3D printing in this project. I will explain how to make aluminum flames in another opportunity.
We design all parts by using 3DCAD Fusion360.
- 2017.11.25Basic structure of Arduino sketch was added.NEW
- 2017.9.9Motion page was added.
- 2017.6.183D CAD information was updated.