PSAS Launch Tower Computer (LTC)

PSAS has had three generations of launch tower computers:

• LTC v1 (2005-2012)
  • PC-104+ 486 running Linux 2.4 talking CAN to PIC18F-based boards with relays and analog
  • Lucent "Wavelan" PCMCIA WiFi card
  • 12V SLA battery powered with 30W solar panel
  • Metal IP66 case on independent
• LTC v2 (2012 - 2014)
  • Beagle board talking USB to Phidget relay and analog boards
  • Alpha WiFi board
  • Ethernet umbilical cord
  • 12V SLA battery powered with 30W solar panel
  • Medium sized plastic IP67 enclosure
• LTC v3
  • BeagleBone Black using GPIO and analog mounted on a single custom carrier PCB
  • 14.7V LiPo pack with solar charger.
  • Smaller case

This repo contains everything related to the launch tower computer (LTC), with the exception of the userspace software, which is contained in the launch-tower-comm repo.

Contents

• doc

  • Documentation, what there is of it.

• eagle

  • Schematics and PCB layouts, made with Eagle.

• laser_cut_drawings

  • Line art of the power and ignition boards' mounting panels, suitable for use with a laser cutter.

• ltc3

  • Everything related to the design and manufacture of the third generation launch tower computer, LTC3.

• os

  • Everything needed to bring up a fresh, bootable Debian GNU/Linux system, just the way we like it.