Devlog 3

School’s back, but so am I!
Havent had a lot of time recently as you can tell, but im here to present the finished CAD!!!
im very glad I don’t have to deal with Fusion 360 for a bit.
Im pretty happy with how everythin turned out, the design is pretty decent, the file is Solidly parametric, just tolerances between the printed and non printed parts are going to be a hassle.

To be fully honest though, the design is probably hot ass, i have no idea if any of it will hold up assembled, torque calculation for the length of the arms was all done on a complete whim, but hey, I made it and it’s mine :)

I have some free time this weekend and nothing better to do, so im really sprinting to finish this project and assemble everything. Part of the work has already started, I just hope im not underestimating the time soldering will take.

note: in red, all parts to be printed

Devlog 2

Ive been a bit lazy as always

Good news Though: the entire software side of things is pretty much finished!
The Stepper Motor for base rotation is using the AccelStepper (by Mike McCauley) alongside a custom wrapper class to work with degrees and some QoL functions.
The 2 MG90s Servos use the SeroEasing library (by Armin Joachimsmeyer) to smoothly move to the desired position.
This means that all motors can now move the respective degrees calculated by the arduino, which receives the desired Coordinates from the desktop programm.

Bad News: Still have to do the entire goddamn CAD. i dont wannaaaa :(.

Devlog 1

Had a bit of a rough time
if anyone has a recommendation for a reliable adjustable PSU or knows a design workaound for sliprings Please hit me up!!

Good Stuff:

1. Parts arrived!!! Had a great time trying out the new parts like a Nema 17 Stepper motor (which is way overkill but idc, probably need it later on anyway).

2. Started the Cad. Its hit or miss, some parts work, others dont.

3. printed Parts. As you can see in the picture, i started printing some parts from the Cad i was confident int, though i need to adjust some tolerances. (They were all printed on a Prusa Mini+ with .2mm layer height)

Bad stuff:

1. To power the motors I need a better power supply than a 9v battery. Will probably buy an adjustable psu soon, since i dont want to power every project off of a battery pack, but itll be expensive… the base of the arm also probably needs a slip ring (if anyone has ideas to not need one im very open) and some longer wires. Thats why im having problems with the cad design, since i failed to account for those thing.

2. Forgot to track pretty much all the Cad work with lookout (who on earth remembers to turn that on…)

Problems are a bit of a bummer, since it means waiting on parts to arrive and, since im great at procrastinating, my summer break is going to be over somewhat soon.
Thx for reading my rant, thx to the contest organisers and if anyone has a recommendation for a reliable adjustable PSU or knows a design workaound for sliprings Please hit me up!!

Personal Site Devlog 0

(devlog 0 because i might work on this later and all the work so far was part of the workshhop)

Made by following along with the Stardance Workshop, using an HTML and CSS file.
Content is currently irrelevant, just something to fill space and try it out.

Devlog 0

have to do a devlog 0 since i started workin on this before i knew about this event

My basic goal with this project is just to learn and get better at CAD and coding by actually building something, not to create something crazy innovative.

The current goal of the project is to build a 2 segment robotic arm, that can be controlled using desktop software, sending 3D coordinates to an arduino which then computes the motor angles. (having just 2 segments means i can use a simple trigonometric ik- solver)

So far I have the basic software done, made using PyQt, Pyserial and matplotlib (see picture), aswell as the ik solver in the arduino IDE. Since you need some time captured in hackatime/lapse to post a devlog, the current tracked time is mostly dicking around with color settings in PyQt and starting some templates in Fusion

what im planning to do now:

• Finish the cad Model
• Order Motors, Drivers, etc.
• Integrate the motor controls into the aruino code
  -> Probably ship the project

-> if im not tired of it, expand every aspect to fit a 6 DoF robotic arm and ship that as a new project.

once again, this project is just to learn and not anything impressive, thx for reading and to the competition organisors.