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  • PSU #010, a PL320QMD

  • Fault label: "Numbers keep changing".2024-03-01Switched on, set dials to maximum. Leftt around 28.8V and drifiting, right around 32.88Dials set to minimum.Left side very slowly descends to 14.3 volts, terminals are at -0.424 volts.Right side slowly descends...
  • First quick test

  • Right after the assembly, a basic test confirms the modules work, though the pulse generator frequency is somewhat off. Replacing a 6.8 kΩ resistor with a 4.7 kΩ should fix this. When one module is fed with the 1 kHz signal (from the oscilloscope reference...
  • Serial port

  • The serial port pin-out is cunning designed so that you can connect to a PC with a simple modem cable, or daisy-chained with other TTi devices. 1 Power to optional PC-02 2 TXD Transmitted data from instrument to PC 3 RXD Received data to instrument from...
  • What have I got?

  • The first step, after wiping-off the accumulated grime and surface corrosion, was to assess what I have. Within the very large - and very heavy! - case were four cards - an MZB-3 CPU card, a VDU-2K (composite video only) 'graphics' card, an FDC-1 Floppy...
  • Project Log 1: Project Start

  • I got this idea based off of a research paper a friend showed me and decided to go full prototyping mode with it!So let's say we have two tapes right, E is our tape with magnets on it, which is slightly longer than D (which has hall sensors). They are...
  • Initial Design

  • Initially, I roughly design the device to meet the following points: Slim and smallCellular connectivityGNSS -based location trackingLow-costBattery-powered and Rechargeable Working on the schematics, I was able to achieves those points and choses...
  • I must fly...

  • In 5 daysThis is a distraction from writing the Pelicam software but days off and nice weather, have to flyI'm going to at the very least build a crude 1 day thing that functionsIt is pretty much just a battery-powered rpi cam... but it will be attached...
  • Week 1 & 2 - PCB Layouts

  • I've started by laying out the five boards in Eagle 9.52.  Boards are now being ordered through JLC.  All parts have been ordered through Mouser and Digikey - however sourcing a small meter and solar panel that will match have been a bit of...