3wheelbot

jp15sil24

Germany

https://www.youtube.com/shorts/ws-IgqWD5tk My goal is to build a bigger humanoid on wheels. As i am not very experienced with ARC, i thought i can start with a smaller rolling robot. Add robot skills which i can use later. I decide to make the 3wheelbot based on adventure robot designed from ez-robot and ARC software. The 3wheel robot should be able to roll, has a camera,  move forward,reverse, left and right. The camera uses only a tilt function. The 3wheelbot must avoid to touch he walls on the left,right sides as the chassis is quite wide. I installed 2 ultrasonic sensors.The bot is controlled remotely using remote UI and over internet as well.The IP address must be changed by using the wide IP for internet use. I modified the adventurebot by adding a bigger battery (6200 mHa), a mix chassis with aluminium and 3D pla. I added a third wheel on the rear . The camera is located on a 30cm high tower. I added an horn for the small speaker, this makes a good powerful sound.

User-inserted image

User-inserted image


Programming

There are some nice tutorials which helped me a lot. .I took the original adventure bot and modified the skills configuration.When you installed the adventure bot into ARC, you have automatically 2 workspaces. The 2nd workspace explained very well how to calibrate the 360 servos. Lucky i was to get this workspace since i did not know these servos must be calibrated before use. The servo d0,d1 for movement were already available. The challenge i had to face to was the configure the remote UI. It did not work at first. I did a lot of tries with wifi up down, ip address changes etc... You have to power off/on the robot sometimes, restart ARC.The remote UI apps on the smartphone is ok but sometimes, you cant get a connection and again have to power off/on the bot. The latency is quite high. That means the movement control is not easy to be controlled with the joystick pad.I will check with the exosphere skill .

Parts & Materials

Tools

  • standard tools
  • 3D printer with PLA matte. for the tower and 3rd wheel support
  • Screws, dremel -2 component glue

Parts -iotiny

  • camera ez-robot
  • 2 x 360 hdd servos
  • 1 servo 180 for camera tilt
  • 2 ultrasonic sensor
  • speaker with horn
  • 7.4V battery lipo 6200 mAh

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Belgium
#1  

@jp15sil24

looking good . great start .

#2  

Looks like your have a good start and are having a lot of fun. Please keep us up to date on your progress!