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Terrarium controller (esp32 based)

Firmware is here

This terrarium controller is capable of controlling set temperature, heat, and UVB lamps taking into account the time of the day.

Features

  • ESP32 WROOM 32 as a main brain of the system
  • EEPROM i2c DIP-8 socket for user configuration storage
  • 6 x 5v i2c & 1wire sensors
  • 4 x 5v SSR to drive up to 3 x 220v2A loads
    • Protected by SMD fuse with max current limited to 1.5A/220V
  • 2 x 5v 3/4pin PWM fan support
  • i2c Display to show crusial information
  • i2c RTC DS3231M + battery to keep time between power outages
  • i2c multiplexer TCA9548APWR
  • i2c IO expander PCF8574
  • i2c extensions port
  • cp2102 USB to UART
    • It is bidirectional now
    • Includes ESD protection
  • USB-C for power and flashing
  • 0805 components size

Images

pcb v1.10 3d pcb v1.10 pcb pcb v1.10