federico3 / trovastelle Goto Github PK

Right now any update automatically reflects in the application. This also causes the config to get overwritten whenever the page is opened, which is less than great. Fix: add a button to upload configuration, remove autoupload.

Requires converting from alt-az to ra-dec

This should read from props.list.

https://github.com/ofrohn/d3-celestial

Depends on #19

Here we update the observables. However, often, the change does not "take" until a reboot. I think there's a race condition somewhere?

• Add a few millimeters to base height
• Move holes for 9DOF a little bit
• Make slightly more room for switch plug and for RPi wiring

For BepiColombo, it's a git pull.
For the others, may be trickier.

Adafruit says that, so long as the system calibration level is 1 or higher, we will have North. We can perhaps relax this check to system calibration>=1, or >=2.

Often, trovastelle2 will give this error:

➜ python trovastelle.py
Traceback (most recent call last):
  File "/home/pi/trovastelle/src/celestial_compass/trovastelle.py", line 438, in <module>
    asyncio.run(ts.run(),debug=_debug)
  File "/usr/lib/python3.9/asyncio/runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "/usr/lib/python3.9/asyncio/base_events.py", line 642, in run_until_complete
    return future.result()
  File "/home/pi/trovastelle/src/celestial_compass/trovastelle.py", line 399, in run
    await cc_task
  File "/home/pi/trovastelle/src/celestial_compass/compass.py", line 168, in run
    await main_task
  File "/home/pi/trovastelle/src/celestial_compass/compass.py", line 233, in _run_main
    self.display_controller.display_observable_data(
  File "/home/pi/trovastelle/src/celestial_compass/display_manager.py", line 241, in display_observable_data
    self._display_text_in_box(
  File "/home/pi/.local/lib/python3.9/site-packages/luma/core/render.py", line 43, in __exit__
    self.device.display(self.image)
  File "/home/pi/.local/lib/python3.9/site-packages/luma/oled/device/__init__.py", line 225, in display
    self.data(list(buf))
  File "/home/pi/.local/lib/python3.9/site-packages/luma/core/device.py", line 55, in data
    self._serial_interface.data(data)
  File "/home/pi/.local/lib/python3.9/site-packages/luma/core/interface/serial.py", line 125, in data
    write(list(data[i:i + block_size]))
  File "/home/pi/.local/lib/python3.9/site-packages/luma/core/interface/serial.py", line 134, in _write_large_block
    self._bus.i2c_rdwr(self._i2c_msg_write(self._addr, [self._data_mode] + data))
  File "/home/pi/.local/lib/python3.9/site-packages/smbus2/smbus2.py", line 658, in i2c_rdwr
    ioctl(self.fd, I2C_RDWR, ioctl_data)
OSError: [Errno 121] Remote I/O error

Looks like this is an i2c error. It may have to do with the clock not being properly stretched, or just some issue with how the display is wired (remember that terrible soldering job?), or just noise. When this happens, the whole application crashes and does not restart.

Turns out laser-cut gears are super noisy and inefficient. Consider commercial alternatives.

Also consider making the position of the stepper something we can calibrate.

Options:

• Gears: ~$20
  • Stepper ($8.5). Can also get more teeth on eBay.
  • Arrow base (number of gears negotiable, $3.5. Can also go aluminum for $10)
  • Arrow base hub ($6)
• Timing belts
  • XL $30+8
    • Stepper $7.6
    • Arrow base $6.8
    • Hub adapter $4.5
    • Hub 8mm $6
    • Belt $4
  • 3mm ~$26+8
    • Stepper $3.4
    • Stepper hub $4.7
    • Arrow base $6.8
    • Arrow base hub ($6)
    • Timing belt $5-10
    • Tensioner bracket $5.1
    • Idler $2.5
• O-ring belt $22+8
  • Stepper $3.4
  • Arrow base $6
  • Arrow base hub $6
  • Tensioner bracket $5.1
  • Idler $2.5 OR alternative $6
  • Belt $6

A thinner 8mm hub (currently sold out).

Backend should be up as soon as possible. It is OK to reply with "waiting" or "calibrating".

• Set up machine (unattended-upgrades, etc.)
• Pull this repo
• requirements.txt
• apt-get stuff
• Set RTC time
• Install all required data files
• Set up service to download Celestrak files by copying fetch_celestrak_data.{timer,service} to /etc/systemd/system, then sudo systemctl daemon-reload, then sudo systemctl enable, then sudo systemctl start.
• Set up service to autostart trovastelle.
• Set up LED pins at startup

As a circle maybe?

We have a service for the arrow controller. The frontend and backend should also autostart. To do this, we need to figure out wsgi.