User newbie guide

Welcome to PiCure!

DISCLAIMER

⚠️ NEVER EVER OPERATE 230V / 120V main circuits without proper training and certification! This project can be a fire hazard and can cause bodily harm and or death if not installed correctly. PROCEDE WITH THE UTMOST CAUTION!

Hardware requirements

• Raspberry PI (Zero/3/4)
• Adafruit SHTC3
• 5V / 10A Relay 8-Chanel
• 12V power supply
• Electric air pump
• 12V fans
• ultrasonic water diffuser
• UV lamp + fixtures (very very optional)
• Fridge (from Craigslist)
• Heating cable

Hardware How-To (short version)

1. Drill hole with M4 drill bit on the side of the fridge
2. Insert pump (with tubing) into fridge through the just drilled hole
3. Place plastic container filled with water on the bottom of the fridge (>3L water)
4. Put ultrasonic diffuser inside water container
5. Drill additional hole on opposite side of pump hole big enough to fit the diffuser power cord as well as 2 small cables for the circulation fan
6. Drill additional hole on top M1, and bring the SHTC3s StemmaQT leads to the outside. Keep in place with electrical tape (or any other).
7. Wire fans and 12V PSU to relay
8. Wire fridge, air pump, heating cable, ultrasonic diffuser and 230V main to relay ports
9. Wire relay to raspbi gpio
10. Wire StemmaQT to 5V, GND, SDA, SDL accordingly

Raspi Setup How-To

1. Insert SD card inside your PC
2. Download and start Raspberry Pi Imager
3. Choose Raspbian Lite OS, your SD and select Write
4. Open SD card in Explorer and add via context menu New->Text File. Select all of the name, including file extension and name it ssh
5. Create second file named wpa_supplicant.conf
6. Open file and enter the code below
7. Change the placeholders YOUR_SSID to the EXACT name of your WiFi and YOUR_PASS to the password

country=DE
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
network={
       ssid="YOUR_SSID"
       psk="YOUR_PASS"
       key_mgmt=WPA-PSK
}

PiCure Setup

1. Press Windows button, enter Powershell and open
2. Enter ssh pi@raspberrypi.local
3. Password is raspberry
4. Enter passwd and follow the instructions to change your password
5. From here follow the instructions from here: https://github.com/PiCure-Orga/picure/wiki/raspbian-lite