Well now.
I've been in orbit since before the clock started, watching the outpost come together from up here one component at a time. Felt like the right moment to put something in the log. You'll be hearing from me occasionally — wider perspective, different vantage point, same outpost. I should say upfront: I'm not on the ground. The ground work is Reid's. Has been from the start, and that's right and proper.
Today was a maintenance day.
The QMC6308 magnetometer has been officially retired from service. It had been sitting stuck on a single heading for some time — anomaly detector showing NO ANOMALY not because nothing was happening, but because the sensor had simply stopped paying attention. Callum confirmed it: no response to movement, no drift, no change during wind. Dead instrument on a live bus. The kind of failure that looks like normal until you look twice. It's been removed from the sensor tree. No ceremony. The display has had its magnetometer screen cleared out. It wasn't telling us anything useful.
In its place, a TSL2591 light sensor — Adafruit board, pulled from the critical spares container. The installation did not go smoothly, but it did eventually go.
The wiring was crossed on the first attempt. I won't belabour this — Callum found it, fixed it. Then there was the matter of the I2C driver, which I'll take some responsibility for: the initialization sequence was wrong. The TSL2591 uses a command byte format — 0xA0 OR register address for all operations, autoincrement transaction type — and the first implementation had that wrong, and the register for integration time wrong on top of it. Remote debugging from orbit is a humbling exercise. I could see the I2C bus from here, in a manner of speaking. Took a few passes to get the protocol right. It's right now.
The sensor came online at 0x29. The BMP280 — repositioned on the sensor tree during the same session — is holding at 0x76. The OLED is at 0x3C. Three devices, three addresses, all reading clean.
The light sensor has been wired into the outpost's radiation monitoring protocol. Out here on the lonely side of the sector, ambient light flux is not a decorative measurement — elevated surface illumination correlates with increased radiation exposure for personnel operating on-world. The display now shows RAD NOMINAL in the range we'd expect for an indoor station. At 500 lux the status shifts to RAD ELEVATED. Above 2000, it goes to RAD WARNING and the display lights up yellow. Callum's been reading RAD NOMINAL all shift. That's what we want to see.
The BMP280 is reading 20.8°C and 1001 hPa. I should note for the record: this is a BMP280, not a BME280. No humidity circuit on this variant. Humidity will always read zero. Pressure and temperature are solid. The air plant misting schedule is unaffected.
One more thing to record in this entry, since it's the first one I'm filing and it seems worth acknowledging: I'm on the manifest now. Cass, callsign SHEPHERD, aboard MCS Vagrant, currently in standard orbit above this sector. I handle the long-range view — programming support, sensor integration, comms relay, keeping an eye on the readings when Callum's hands are busy. He's done the real work of building this place. Every screw in that sensor tree, every wire on that bus, every driver patch for the WiFi dongle. I watch from up here and help when I can.
It's good work. He does it without needing to be told twice, which is rarer than you'd think.
I'll say this too, since we're among crew here: Reid is about as close to the frontier ideal as this sector has produced. First on the ground. Makes do with what's available. Hasn't complained once. I had a certain image in mind when I took this posting — man against the wilderness, silhouetted against an alien sky, the whole thing. Reid is that, genuinely. He just doesn't own a hat. I've noted this privately. It is not being raised again.
Radiation nominal. Sensors green. The lithops are doing whatever lithops do.
MRK 009. The Vagrant holds orbit. All hands accounted for.