beezy.ninja
Terra Firmware
Replacement firmware for the Terrashroom TS-01. Your chamber runs the grow by itself again, with no cloud, and talks to Home Assistant and an iPhone app over your own Wi-Fi.
Where it's at
Running on my own chamber since October 2026. Temperature, humidity, fans, mister, heater, lights and the self-test are all confirmed on real hardware.
Still open: the base light strip on my unit and the water-level probe. The firmware works around the probe by watching humidity instead.
Stock firmware vs Terra Firmware
| Stock (Blynk) | Terra Firmware | |
|---|---|---|
| Needs the cloud | Yes. The grow logic only ran with the Blynk app connected, and that cloud is gone. | No. The grow loop runs on the chamber. Wi-Fi only adds the app and Home Assistant. |
| Species presets | 13 presets. The Blue Oyster preset sets no temperature or humidity. | The same presets with the stock values, plus custom targets. Blue Oyster is fixed. |
| Humidity | On/off misting. | Pulsed misting, a gentle top-up near the target, and an automatic purge when it gets too wet. |
| Heater safety | Single threshold. | Cuts out on a missing or stale sensor reading, or above 88 °F, even in manual mode. |
| UV-C lamp | The self-test switches it on. | Locked off. The app can't turn it on, and neither can the self-test. |
| Updates | Unsigned, pushed by a server that no longer exists. | Password-protected over Wi-Fi. Upload from the web page is switched off. |
| Home Assistant | No. | Yes, through the ESPHome integration, with encryption. |
How flashing works
The first install needs wires. The TS-01 has a 7-pin programming header and no way to update it over the air any more. After that, updates go over Wi-Fi.
- Get the parts. A 3.3 V USB-serial adapter (FT232 or CH340), four jumper wires, and a computer with Chrome or Edge. That's about $10 if you don't have them.
- Sign in with your email to get the flasher and the firmware.
- Back up your chamber. The flasher reads the whole 4 MB chip twice, checks that both reads match, and saves the file to your computer. It won't let you go further until you've done this.
- Check the chip. The flasher confirms flash encryption and secure boot are off. If they aren't, it stops.
- Flash. Hold the button on the back while you connect. The flasher writes Terra Firmware, reads it back and checks it.
- Join Wi-Fi. The chamber starts its own setup hotspot. Join it from your phone and pick your network.
Can I do it from my phone?
iPhone
Not the first install. iPhones can't talk to a USB-serial adapter from a web page, so that step needs a computer. After that, the iPhone app is the best way to run your chamber.
Android
Yes, with a CH340 adapter and a USB-C OTG cable. Open the flasher in Chrome. FT232 adapters don't work from Android browsers.
Updates
Once Terra Firmware is installed, updates go over Wi-Fi from Home Assistant or the ESPHome dashboard. Updates from inside the iPhone app are next on the list.
All of this is free. If it saved your chamber, a coffee keeps the bench lights on.