Plants while travelling

ip neigh show 192.168.1.18
git clone https://github.com/JAlcocerT/RPi
#git clone https://github.com/JAlcocerT/Home-Lab 
cd ./RPi/Z_SelfHosting
sudo bash homelab-selfhosting.sh
#docker --version #Docker version 26.1.5+dfsg1, build a72d7cd

⚠️

Remember to enable the pi camera!

#vcgencmd get_camera
sudo raspi-config #OV5647 sensor (the classic 5MP Camera Module v1.3)

Now, these are the ones working: for Debian Trixie

rpicam-hello #Linux jalcocert 6.12.75+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.12.75-1+rpt1 (2026-03-11) aarch64 GNU/Linux
rpicam-still -t 1000 -o pico.jpg --nopreview
scp jalcocert@192.168.1.18:~/pico.jpg .

As you can imagine, this worked back in time, but for the latest Trixie OS its…tricky

rpicam-vid -t 15000 --width 1920 --height 1080 --framerate 30 \
--bitrate 10000000 --codec h264 -o clean_1080p.h264

ffmpeg -framerate 30 -i clean_1080p.h264 -c:v copy clean_1080p.mp4

scp jalcocert@192.168.1.18:/home/jalcocert/RPi/Z_SelfHosting/Frigate/clean_1080p.mp4 .

There where some gotchas, but this Frigate stack also does the trick.

As i just wanted to see, I disabled the recordings at the config.yml like so

cd ./RPi/Z_SelfHosting/Frigate
sudo docker compose stop      # stop both containers (keeps them, fast restart)
sudo docker compose start     # start them again
sudo docker compose down      # stop + remove containers (network too)
sudo docker compose up -d     # recreate from compose files (use after editing them)
#docker stats frigate #50% of the cpu for my pi4

DHT22 x VPD x pgsql Webapp

ℹ️

More about Frigate in a future post, for now enjoy the setup at http://192.168.1.18:5000/

The DHT Home Monitoring

I modified it recently to just be Node x PGsql (TimescaleDB)

Going from this:

DHT Webapp

To such stack:

#docker ps | grep emqx
#cd ./RPi/Z_SelfHosting/pgsql
#docker ps | grep timescaledb
cd ./RPi/Z_MicroControllers/RPiPicoW/picow-dht-webapp-vpd-poc
docker compose up -d --build
#Web → http://<host>:8001 · DB → localhost:5433.
docker compose up -d --build webapp
#docker compose up -d #and here it goes timescaleDB + all the webApp
#docker exec -it timescaledb psql -U pico -d sensors

We still rely on EMQX for MQTT like the previous version!

EMQX Docker Config 🐋 ↗ RPi DHT22 NodeJS - Docker Config 🐋 ↗

DHT22 x VPD x pgsql Webapp

The one you can visit anytime at http://192.168.1.2:8077/

MQTT x Alerts

Initially I thought about webhooks
Then, I reminded that I tried gotify last year

Gotify | Docker Config 🐋 ↗ Ntfy | Docker Config 🐋 ↗

Conclusions

So far, one of the best experiments of the year:

Growth Experiment

Its been a while since the last review.

How are the plants doing after ~6 weeks of planting them?

The most developed tomatoe plants are having small flowers already at the top.

FAQ

When is the best weather to plant what?

You can use my latest trip-planner v4 as launched here

git clone https://github.com/JAlcocerT/Py_Trip_Planner
cd ./Py_Trip_Planner/poc-trip-planner-v4
#npm run dev

alt text

Get the patters to know what to expect depending when you will be leaving your plants alone.

Inspiring resources

You get a walk around AC/DC power transmission

ℹ️

For transmiting power at same V, DC is more efficient than AC because of effects like skin effect, corona…

ℹ️

Turbines are a thing: there is an upcoming fluid post

Concepts

VPD -

Pi x Cam is trickier

Some time back, this worked:

#git clone https://github.com/meinside/rpi-mjpg-streamer 
git clone https://github.com/JAlcocerT/rpi-mjpg-streamer
cd rpi-mjpg-streamer
#curl -fsSL https://claude.ai/install.sh | bash
# echo 'export PATH="$HOME/.local/bin:$PATH"' >> ~/.bashrc
#source ~/.bashrc
sudo apt install gh
gh auth login #with a PAT for 30d
cd ~/RPi && git push

⚠️

This worked with bullseye debian v11, but notanymore

So I got to know about: https://github.com/bhaney/rtsp-simple-server#docker

podman run --rm -it \
  --name camera-stream \
  --network=host \
  --privileged \
  --tmpfs /dev/shm:exec \
  -v /run/udev:/run/udev:ro \
  -e MTX_PATHS_CAM_SOURCE=rpiCamera \
  docker.io/bluenviron/mediamtx:1-rpi

http://192.168.1.18:8889/cam/

And finally: https://github.com/AlexxIT/go2rtc

podman run -d --name go2rtc \
  --restart always \
  --privileged \
  --network host \
  --tmpfs /dev/shm:exec \
  -v /run/udev:/run/udev:ro \
  --device /dev/video0:/dev/video0 \
  --device /dev/media0:/dev/media0 \
  --device /dev/dma_heap/linux,cma:/dev/dma_heap/linux,cma \
  --device /dev/dma_heap/system:/dev/dma_heap/system \
  -e GO2RTC_STREAMS_TOMATO_CAM='exec:rpicam-vid -t 0 --nopreview --codec h264 --inline --listen -o -' \
  -e GO2RTC_ALLOW_ARBITRARY_EXEC=true \
  docker.io/alexxit/go2rtc:latest

RPi mjpg streamer | Docker Config 🐋 ↗

Prior Pico/ESP DHT

#git clone https://github.com/JAlcocerT/RPi
#git pull
cd ./RPi/Z_MicroControllers/dht-webapp
tmux new-session -d -s mqtt 'uv run mqtt_to_db.py'
tmux new-session -d -s webapp 'uv run uvicorn main:app --host 0.0.0.0 --port 8077'
#tmux ls

Electro-Magnetism for AC/DC engines Fluidssss