Tail Rotor Development - Githubissues

Terrapin-Rocket-Team / Payload

Code and PCBS for the payload team

MIT License

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Tail Rotor Development #5

Open nate-roy opened 2 months ago

nate-roy commented 2 months ago

[x] H bridge hardware/software driver validation
- [x] Determine max frequency
[ ] Motor characterization
- [x] Create test hardware
- [ ] Figure out adjusting teensy PWM to custom frequency
- [ ] Determine K value for duty cycle on -1 to 1, step size of 0.1
- [ ] Run basic PD controller on system and compare results
[ ] Motor simulation validation
[ ] Controller validation (drop test)
[ ] Chute tilt activation design (drop test)
[ ] Locomotion validation
- [ ] Write flight code
- [ ] Flight test

rnorthcu19 commented 1 month ago

I will be going to cypress later in the week to run a few tests on the part and print a new version with increased infill/wall thickness.

osapa7 commented 1 month ago

Started control simulation

nate-roy commented 1 month ago

Micro on test board is unable to output 5v from signal unless the usb cable is connected (dont know why, also struggling to deal with pull up resistors), and so cant trigger the h-bridge. Will try updated pull up resistors before switching to teensy testing board. Print is complete, will be assembled soon

nate-roy commented 1 month ago

Moved test board over to a teensy, integrated motor, battery, and board into test hardware. System is ready for testing, but might need a new 9v.

rnorthcu19 commented 1 month ago

Printed new arm, looked over nichrome stuff, and am still a bit confused but I can sort it out I think.

osapa7 commented 1 month ago

Making progress on the simulator. Want to ask some questions and get some dimensions of the payload.

osapa7 commented 1 month ago

Tried testing but ran into sd card error. Will try using Airbrakes code or will use teensy internal storage worst case for recording

rnorthcu19 commented 3 weeks ago

I created an initial model of a nichrome arm for the release system.

rnorthcu19 commented 2 weeks ago

I have modeled a second potential design. The next steps are printing and dropping-testing these designs to find possible flaws.

CooperBrownUMD commented 2 weeks ago

Updated testing sled for LiPos

rnorthcu19 commented 1 week ago

Adjusted the nichrome arms to fit the fishing line

rnorthcu19 commented 1 week ago

Screenshot 2024-10-30 at 1 14 39 PM

nate-roy commented 1 week ago

Verified analogWriteFrequency() does what it says it does, so can switch to using that.

CooperBrownUMD commented 3 days ago

Experimentally derived cubic fit mapping angular accelerations to PWM values.