B2EMO RC Toy

285 downloads · 2 years ago · This little BEE can move around, open up its wheel and extend its body. The eye will light up and t

Description

This little BEE can move around, open up its wheel and extend its body. The eye will light up and the head is fully articulated. The bot runs on 4 AAA batteries with a chargable LiPo battery. A pdf guide is included with detailed instructions and useful information.

Video guide to build the B2EMO by Box and Loop: https://youtu.be/zxGkoxTTtmM

PDF contains: Code, Wiring, BOM

Enjoy your build!

Links for parts: Servo ES08MA II https://amzn.to/3V5k1Zn DC Motor https://amzn.to/49Rbj4U Adafruit DC Motor FeatherWing https://amzn.to/3wxRt05 USB C Module https://amzn.to/49BsuaY Adafruit Feather M0 RFM95 LoRa Radio https://amzn.to/3ToFHwT LiPo Battery - 400mAh https://amzn.to/3wBISJU LiPo Battery - 1200mAh https://amzn.to/3Tjyi3l LED 5mm https://amzn.to/3ThLN3l 2xAAA Battey Holder https://amzn.to/49TImVV Push Button - 12mm https://amzn.to/3UUTqxZ Thumb Joystick https://amzn.to/49Y7k6N Potentiometer https://amzn.to/3wz3UJc Bearing 8x12x3.5 https://amzn.to/3T0hBs1 Bearing 5x2x2.3 https://amzn.to/3IjSNGx Bearing 3x7x3 https://amzn.to/3Ihj6xl Bearing 15x10x4 https://amzn.to/3Thl3jk Thrust Bearing 8x19x2 https://amzn.to/3UYSnNy Thrust Bearing 3x8x3.6 https://amzn.to/3P37LEL Rods - 2mm https://amzn.to/3VhRMXx Slide Switch - 3pin https://amzn.to/3TheI7H m3 Heat Inserts https://amzn.to/49xzF3L Ball Bearings - 4mm https://amzn.to/4bQZOwl JST kit 1.5mm https://amzn.to/42VTSOt Zipties - Small Kit https://amzn.to/3uSMwhY

Tags:

Discussions

SinKiller Nick2 years ago

Does anyone have any general help for downloading the code to the arduino? We seem to have all of the libraries downloaded and the code verifies and we download it successfully, but then it doesn't work when we try to work the actual model. Any help would be appreciated.

maugarlo2 years ago

Can you or anyone on this project show a pic of the wiring in Lora board of B2EMO? It´s not clear in the diagram. Thanks.

renatojd2 years ago

That would help me out as well

joshua.t.corbin2 years ago

The amazon link for a pot kit contains multiple resistance pots (5k, 10k, 20k, 50k, and 100k in the one I got), but the build instructions (bom, wiring diagram, and assembly step) don't specify which one to use; new to arduino, so idk how much this matters?

SinKiller Nick2 years ago

Hi, did you ever get your B2EMO to work properly. My son and I are working on one and can't get the motors to the wheels to work - wondering if it is a code issue because the wiring looks correct. Did you encounter any similar issues? Did you find a way to copy and paste the code so that it worked correctly? Any help would be greatly appreciated.

thangsjens2 years ago

I'm fairly certain these are used as voltage dividers (you apply ground in one end and +5 in the other and then measure the voltage on the center output). So the resistance doesn't really matter. Pick a 10k one. They are very common (same as the steering knobs I think).

joshua.t.corbin2 years ago

The Face.stl part has non-manifold geometry that causes an entire band to be left out when slicing for me (in bambu studio); I'll try switching over to the windows version and see if its autofix magic works

joshua.t.corbin2 years ago

Update: reprint after using Bambu Studio (on Windows) auto repair feature came out Fine :tm: so not blocked by this; would probably be best tho to upload a fixed Face.stl for other folk tho

SinKiller Nick2 years ago

Yes, we figured out the same . . . was wondering why it kept printing so janky!

joshua.t.corbin2 years ago

So let's talk about screw heads: the BOM doesn't call out any particular head types, but as you scroll through the assembly instructions, you'll see mostly a lot of button heads, but also a few flat (countersunk) heads. In particular the fit/tolerance test objects (ext spiral + ext 2nd) wont fit a button head, requiring instead a conical flat head (technically the ext gear spur is what I believe will receive the screw head eventually, but digressions...)

renatojd2 years ago

I'm printing now. Ordered everything from Amazon. Except for things I already have. I do want to add a camera and a motion detector. Do you have the whole thing in a Fusion or a assembled STEP file? I use Fusion. Just asking.

Anyway, I plan on building this to chance away the pigeons on my balcony. I might add some wavy arms. The pigeons around here don't scare easily. Maybe add a laser pointer.

Boxandloop2 years ago

That sounds interesting. I wish I knew Fusion enough to make this, but I used Blender for all of it

Layer By Design2 years ago

Am I doing something wrong? I don't see the PDF in the download.

Boxandloop2 years ago

Something is bugging. I am trying to upload it

Layer By Design2 years ago

It's there now. Thank you!

joshua.t.corbin2 years ago

Yeah, the (updated?) PDF seems to be missing now since the Hat stl was uploaded?

joshua.t.corbin2 years ago

Looks like the Hat stl is missing, however there is a wear and tear version of it.

Also BOM list in the pdf is missing the guts upper and hat parts.

joshua.t.corbin2 years ago

Okay, very excited about this project, it'll actually be my first crack at arduino things; parts order placed, will start printing parts soon while waiting on those to arrive.

I had a lot of problems getting the code to copy/paste cleanly out of the PDF, so I've posted my own cleaned up copy here fwiw: https://github.com/jcorbin/b2emo_rc_toy

Also, what license is this model/project under? I wasn't able to easily tell when writing attributions alongside my cleaned up code...

SinKiller Nick2 years ago

Yes, where did you find the RH_RF95.h? I'm getting an error because that is missing. Any help downloading the code would be very helpful . . . I'm new to Arduino IDE.