Autonomous-Webserved-Tanktrack-Robot
Description
Start A New Project Merging Several Skills In One Task. This Is My Tank Track Robot Controlled By A Raspberry Pi Using A Webservice. You Can Control The Robot Over Dynamic Website With Webcam View. The Rspi Also Provides Rpi-Wireless-Hotspot, So It Is Possible To Connect Directly With Your Smartphone. An Arduino-Micro Communicates To The Rspi Over I2C And Controls 8 Servos. Also A Battery State Monitor Is Implemented. I Decide To Use Standard Aa Accus For Powering With 2 Rows A 5X 1,2 Volt. A Step-Up/ Step-Down Switching Voltage Regulator Guaranteed 5 Volt Supply Despite Low Battery. See Latest Video On: Https://Www.Youtube.Com/Watch?V=D2Brukbh378 Updates: 03/12/18: Due To Frequent Questions: The Servo Is A Modelcraft Bms-410C. You Can Buy This In Europe At Conrad (Https://Www.Conrad.De/De/Modelcraft-Standard-Servo-Bms-410C-Analog-Servo-Getriebe-Material-Kunststoff-Stecksystem-Jr-404753.Html). The Servo Is Therefore Interesting, Because He Has A Receptacle For The Axle In The Rear Housing Insinde ! 01/04/16: After A Long Break, I Return To The Project Again. The Raspberry Pi 3B Has Now Integrated Bluetooth And Fifi Which Means It Has More Performance And I Can Remove The "Ampere-Eating" Wifi-Stick. Also Checking The Use Of Adressable Digital Servos Or Selfmade Digital2Pwm-Adaptor For Serial (Bus) Connection. My Intention Is Reducing The Amount Of Cable To The Arm. 07/07/15: Project Goes On. Currently, The Main Problem Is The Power, Respectively The Duration Of The Battery Power Supply. 1 Camera, 8 Servos, 2 Controller, Web Service, And Wi-Fi Hotspot Consume A Total Of 2.5 Amperes. Maybe I Wanted To Solve Too Much At Once :-(( My Aim Is: Remote-Controlled Robot With Camera. Looking For An Alternative Video Transmission System Without Web Service 02/26/15: Add Tank-Track For 1.75Mm Filament Rod. 02/05/15: Software Implemented. Rsp Used As Wlan Hotspot With Webserver -> Communicates To Arduino Over Serial - Arduino Over I2C To Pca9685. Rspi Won'T Work In Multislave I2C Mode :-(( 01/21/15: Fault In The Electrical Circuit Improved. Mosfet Got Too Little Voltage On Ugs -> Reduced Resistance 01/20/15: Build New Battery-Pack For More Current Available. Using 16 X Aa Á 6V (4 X 4 Pack) 01/19/15: Implements Pca9685. Works Fine! First Trial Without Rsp For Verfication Of Trigonometric Calculation On Arduino. 01/08/15: First Trial Completed. Built A Experimental Arrangement With A Old Joystick And A Second Arduino-Micro Which Simulates The Rspi-I2C Communication (See Image). Arghh! Huge Twitching Of The Servos Because Arduino Is Overloaded With I2C And 8 Servos! Special Servo Driver Ordered (Adafruits-Pca9685) To Save Arduino-Performance. 01/06/15: Add Layout Extension Board Preview. Not Checked If All Works - Release Of Eagle File After Validation By Function. 12/28/14: Laser Pointer Moved To The Middle Of The Gripper - Now I Can Point To The Thing I Want To Grip Exactly. -Change Cam To A Rspi-Wide-Angle Cam. In Fact This Camera Is Much Lighter Than The First One! -Change Arm Wiring! Because Of Problems With Bending And Buckling The Wires Between The Servos I Decide To Route Them On The Side Which Made It Necessary To Implement The Cam To The Other Side. So Add 2 Additional Cable Guides. (See New Images) 12/21/14: The Chassis Is Wide Enough Now.It Is Not Necessary To Desolder The Cinch Video Connector. This Is A Work-In-Progress Project And Wil Bee Updated Regularly ;-)
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