ExJ Infrared Camera

thingiverse

This appears to be a detailed guide for assembling and configuring an infrared camera system using a Raspberry Pi, a touch screen display (PiTFT), and various other components. Here's a breakdown of the steps: **Assembly** 1. Download and place the `raspberry-pi-i2c-bus-speed` file in the `/home/pi` folder. 2. Assemble the printed parts by snapping the front and back onto the top/sides piece, making sure that the LED goes into its little side hole and the Pi camera cable does not obscure the HDMI opening in the top. 3. Plug the USB DIY connector into the battery and slide it in, requiring a small amount of force to snap it into place. 4. Attach the base (may have to momentarily loosen the front and/or back) and screw everything together with self-tapping screws. **Setup** 1. Charge the battery by pressing the button on top and peering through the battery-shaped hole in the front. Four lights = fully charged. 2. Connect the HDMI port to an HDMI monitor, the USB ports to a keyboard and mouse, and power the device on. 3. Go through the Pi first run setup and set the locale, wifi settings, password, etc. 4. Disable overscan, pixel doubling, and screen blanking. 5. Enable SSH, VNC, SPI, I2C, Serial port. 6. Optionally, set desktop preferences: uncheck wastebasket and mounted disks, and increase system font to about 24 pixels. **Terminal commands** 1. Run `sudo chmod +775 ~/*.sh` to give execute permissions to the shell scripts in the current directory. 2. Ensure a working internet connection and run `sudo rpi-update`. 3. Manually reboot the system. 4. When it comes back up, open a terminal again and run `sudo apt-get update` followed by `sudo apt-get install -y gedit rclone unclutter libgtk-3-dev libi2c-dev libjpeg-dev libpng-dev gpac`. 5. Run `~/ircaminstall.sh` to download the source files for the camera app and compile them into executables. **Camera calibration** 1. Select option 4, then option 3, then wait, then answer N, Y, wait again, and answer Y when prompted. 2. The unit will reboot into camera mode. 3. Check that there is a NoIR image shown and a thermal image overlaid on it. Wave your hand in front of the unit to check the thermal sensor. 4. Run `~/ctrlr thc` to take one thousand consecutive thermal snapshots, average them out, and generate a text file representing the necessary corrections for variances in the thermal sensor. **Calibration adjustments** 1. Press the W, A, S, Z keys until the optical and thermal images align in the viewscreen. 2. Pressing the view area takes a photo. **Final steps** 1. Delete the installer shell script and move the desktop icons around. 2. Reboot into the camera app or type `./ctrlr` in the terminal to start the thermal imaging application. 3. Disconnect the monitor and keyboard/mouse, and enjoy your new infrared camera! The user manual is available here: https://docs.google.com/document/d/13N0HF1H3yCP-lyx0upOR_FPntTJiehe-wWmnJNSEhBQ/edit?usp=sharing