Zerobot Project - Update 3

This week the new parts came in. I tested the operation using brand new Zeros and cameras. Found a defective motor controller on Zero 2.0. After replacing it, the wheel no longer rotated prior to booting up. I have successfully created an SD image file to burn onto any new SD card that operates a new Zero correctly. The only change in the file is correcting the IP address to the one of the new Zero.

Zero 1.0 and 2.0 are both fully functional. For the tires on 2.0, I was having issues printing the NinjaFlex so they were printed with PLA. This created traction issues and I attempted in overcoming those by wrapping the wheel in electrical tape.

Zerobot Project - Update 2

This week I have completed Zerobot version 2.0 and have gotten 1.0 working to spec. As always, Issues have arisen. Version 1.0 was working perfectly on Friday, but on Monday, the left wheel would not rotate counterclockwise. I installed a new motor with no change in result. Version 2.0 operated with the same SD card as 1.0. The motors would operate on port :3000 but I had no video stream. The video stream would operate on port :9000 but I had no controls. Another issue on version 2.0 was the left wheel would rotate when power was turned on until the Zero booted up. Once the Zero booted up, the wheel would stop and operate correctly.

Zeorbot Project - Update 1

This week, I have received all of the parts required to complete the Zerobot. I completed the assembly of the electronics and mechanics of the bot. Since I used a different battery pack, I made some additional modifications. In the original writeup by Max.K, the battery and power charging chip were separated inside the bot. In my construction, I kept the components together and cut out a port in the rear of the bot to allow for charging and power supply to the Zero. I will likely hardwire the Zero in the future but this allows me to turn it on and off by unplugging the battery while the bot is sealed. I improved the mounting of components to the PLA chassis. The motor controller was screwed in to one of the ribs. One issue this week was the fitment of the camera. The ones I ordered have a chip in the wire which hinders flexibility. Luckily, the maximum bend rested the camera in place without needing permanent attachment. The motors had dual directional output drives that were interfering with the other components. I removed the inner drive by cutting them off.

The Zero and motor controller have been soldered and wired along with the motors themselves. I changed the GIPO ports used for wiring for cleanliness. This will require changes in the coding provided, that I will look to complete by next week. As of now, the Zero is powered by the USB output on the power bank, and sends that power to the motor controller via 5V output and ground.

The World's Largest 3D Printed Fidget Spinner

Back in March, the Boca Bearing Company set out to create (what was) the world's largest 3D printed fidget spinner using a Type A, Series 1 printer.

3D Printer Filament Stand Project

Today I built a filament stand for our 3D printers. I wanted to hold 24 rolls on the back and will be adding posts for the most common ones up front.

Built from
  • 3 – 2x4x12 
  • 10 – ½” dowles 
  • Construction wood screws 
  • Cost – 50$ 

This was a simple design but was constructed without the use of power cutting tools. ½” holes were drilled evenly spaced and rods that were cut into thirds were pressed in via hammer.

Zerobot Project Introduction

I was assigned to create a step by step instruction manual for others at the company and future interns to build a project that uses many of the tools available at Boca Bearings. The Zerobot was selected as it incorporates 3d printing, coding, wiring, and fabricating. The initial plans were documented from Thanks to Max.K for uploading this for the first prototype to be built.

Using these plans, I used a Maker Select 3D Printer v2 to print all of the components provided via STL files. During the time waiting for parts to print, I compiled a list of all the parts I used to build the bot. Most were listed from the link above, with a few changes of my own.

RC Car Project Update

It’s been a long time since anyone has worked on the RC Car project here in the Workshop and since I’m new to this project I figured now is a great time to begin simplifying and streamlining the wiring. The way everything was wired previously was great for prototyping but it left something to be desired for a more polished product. A lot of the wiring had gotten messed up from moving the bikes and just leaving the project unused for so long, so I grabbed a multimeter and began the work by checking all the connections. Previously a breadboard was used to send power to the bikes and also serve as a hub point to read the data from. This created a mess of wires that made it difficult to see how things connect and so I soldered up all the power lines and ground lines and added on a male pin. Now they can be directly connected to the 5v and GND pins on the Arduino itself. I then added male pins to each of the three signal wires so that they too could be plugged directly into the Arduino. With this new setup, I could eliminate the breadboard which cleaned up things nicely. Now that the connections were simplified I verified that everything was working and turned my attention to the RC car itself. When I began working on the car nothing seemed to be responsive. So, I decided to dissemble the system and redo it, following the same guidelines used previously, which fixed the issues. Now both Arduinos are communicating correctly and everything seems to be working except for the throttle which is glitchy at best. Once the receiver side is fully functional I’ll streamline the wiring and clean it up. Things on the to-do list for this project now are:

- Fix Throttle response

- Clean wiring on receiver side

- Add buttons to enable reverse mode

- Reimplement the FPV system

Once all these are done I’ll be designing a PCB that will condense everything and make the project more professional. Below you’ll find the current versions of the code being used on the project.