Botmonster Tech
Build a DIY smart pet feeder for under $25 with an ESP32, servo, and 3D-printed auger. Scheduled feedings and portion control via Home Assistant.
Smart Home
Real-world smart home builds with Home Assistant, sensors, and integrations that survive past the honeymoon period.
Dynamic electricity pricing automations in Home Assistant with Tibber and Nordpool
Home Assistant pulls hourly spot prices via Tibber or Nordpool to schedule EV, water heater, and heat pump loads, cutting Nordic bills 20-40% in 2026.
Build a Thread device with ESPHome and the ESP32-H2
Build Thread mesh devices with ESPHome 2025.6 on ESP32-H2 and ESP32-C6, join a border router, and expose battery-efficient IPv6 sensors to HA.
Plant monitor system ESP32: under $10 per plant
Monitor multiple plants with cheap ESP32 sensors and ESPHome. Track soil moisture, light, and temperature; automate watering reminders and dashboards.
Automate your pool or hot tub with Home Assistant and ESPHome sensors
Monitor pool or hot tub temperature, pH, and ORP with waterproof ESPHome sensors on ESP32 for under $80. Home Assistant alerts and calibration.
Bluetooth proxies under $20: room detection with ESP32-C3
ESP32 boards flashed with ESPHome Bluetooth Proxy firmware relay BLE to Home Assistant over Wi-Fi for under $20, with room-level presence via Bermuda.