1 / 22

APT 2.0

APT 2.0. Simon Dawes & Keith Rickard Update 2. Mission Control. Monitor BBC Micro B computer (64K RAM) Two 5 1/4" floppy disk drives PMT pulse counters Stepper motor control box 900v DC power supply PMT amplifier and discriminator box Photomultiplier tube (PMT). 2.0 Architecture.

ondrea
Download Presentation

APT 2.0

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. APT 2.0 Simon Dawes & Keith Rickard Update 2

  2. Mission Control Monitor BBC Micro B computer (64K RAM) Two 5 1/4" floppy disk drives PMT pulse counters Stepper motor control box 900v DC power supply PMT amplifier and discriminator box Photomultiplier tube (PMT)

  3. 2.0 Architecture Controller RA Drive • Blue = Complete! • Yellow = Original (minor mods) Arduino(Slave) DEC Drive counter PMT RPi(Master) Arduino (Slave) Keypad The RPi and Arduinos will be powered by a USB hub LCD Buzzer

  4. Hand Box 2x16 character LCD Buzzer Keypad (backlit) Red Light Torch Windows can talk to Handbox Linux work in progress (few bugs to iron out)

  5. Software ~30% complete; 1700 lines of code Test / Proof of Concept Software • WHORU test • Handbox test • Cross platform WHORU test

  6. Demo!

  7. PMT/Drive Arduino • This Arduino counts pulses from the Photomultiplier Tube each time it is triggered by a photon. The final count is provided to the Raspberry Pi. • Its other function is to send the necessary pulses to the telescope stepper motor drives under the control of the Raspberry Pi.

  8. PMT/Drive Arduino • A purpose built circuit board ('shield') has been built to carry out these functions. • It also has a test mode and a PMT pulse emulator • None of this has been tested. It will be checked out before powering it up to enjoy it going up in smoke! Once done, it will be tested directly with the APT

  9. PMT/Drive Arduino

  10. PMT/Drive Arduino Stepper connector PMT pulse emulator buttons Counter chips Stepper motor test jumper PMT pulse connector Stepper motor emulator LEDs

  11. PMT/Drive Arduino

  12. PMT/Drive Arduino

  13. PMT/Drive Arduino

  14. PMT/Drive Arduino

  15. PMT/Drive Arduino

  16. PMT/Drive Arduino

  17. PMT/Drive Arduino 74LS05 hex inverter chip between Arduino and Stepper Motor Control Boards

  18. PMT/Drive Arduino Connectors for PMT lead and Arduino USB connector

  19. PMT/Drive Arduino

  20. PMT/Drive Arduino

  21. End Questions?

  22. Spiral Search Spiral Search routine built

More Related