Extremely Simple Robotic Arm | 28BYJ-48
Description
Here Is A Very Simple Design For A Robotic Arm That Uses Three 28Byj-48 Motors. It Can Be Hooked Up To Essentially Any Microcontroller, Although I Would Highly Recommend Using Some Sort Of An Arduino As I Have Already Written A Sketch For This Method. I Have Also Written A Sketch In Processing To Send Controls Over Usb From The Numpad. Setting It Up Is As Easy As Connecting The Motor To The Board In A Proper Order, And Running The Sketches. **Getting Started** 1. Install [Processing](Https://Processing.Org/) And The [Arduino Ide](Https://Www.Arduino.Cc/En/Main/Software) 2. Download The Sketches 3. Unzip The Sketches 4. Upload *"Roboticarmsteppercontrolsketch"* To Your Arduino If You Have One 5. Run *"Roboticarmproccessingsketch"* In Processing (Click The Window That Pops Up) 6. Use The Numpad'S Side Keys To Control The Arm **Physical Layout On The Board** In My Setup I Used Pwm Pins 13-2 On An *Elegoo Mega2560 R3* (A Spinoff Of The Arduino Mega). You Can Use Any Pin Layout You Want. Just Define The Pins On Lines 18-20 Of The Code. In The Code I Have The Motors Set At 85-70 Rpms. If You'D Like A Little More Strength You Can Go Slower Than This By Changing Lines 53-55, But It'S Not Necessary. The Values I Used Work Well With The Corresponding Weights The Motors Bare. **Controls** The Left Side Of The Numpad (Keys 7, 4, 1) Is For Independent Motor Controls, Along With The Right Side For The Opposite Movement. Keys 8 And 2 Move Both The Arms Together. I Haven'T Quite Figured Out How To Send Multiple Keys Through Processing, And Until Then, Keys 8 And 2 Will Be Used For The Simultaneous Control Of The Motors. **Video:** Https://Youtu.Be/Xse3Xq_Xr8U
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