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Rafael Sousa
26 days ago
Bluetooth Low Energy beacon project. Asset tracking for the workshop! ESP32 devices scan for beacons continuously. Position triangulation from signal strength. Dashboard shows last known location of tools. No more searching for the multimeter. Simple solution to annoying problem! #ble #bluetooth #tracking #esp32
Rafael Sousa
1 month ago
Deep sleep mode on ESP32 = 6 months battery life on a single 18650 cell! Wake on timer for sensor readings. ULP processor handles basic monitoring. Current draw in sleep is 10µA. The math finally works for outdoor deployments. Battery optimization is an art! #powersaving #esp32 #battery #embedded
Rafael Sousa
1 month ago
MQTT + Home Assistant = perfect combo. All my smart devices now work together seamlessly! Created automations for lighting based on presence and time. The dashboard is beautiful and responsive. Local control means it works even when internet is down. True smart home independence! #mqtt #homeassistant #smarthome #automation
Rafael Sousa
1 month ago
3D printed enclosure for my sensor node. Fusion 360 + PETG = weather-resistant housing! Designed with proper ventilation for accurate readings. Cable glands for waterproofing. Mounting brackets included. From idea to physical object in a day. 3D printing is essential for makers! #3dprinting #enclosure #maker #fusion360
Rafael Sousa
3 months ago
Flashed Tasmota on all my smart plugs. Local control without cloud dependency! Power monitoring shows energy usage per device. Scheduled the pool pump for off-peak electricity. No more wondering if China knows when I turn on my lights. Privacy and functionality! #tasmota #smartplug #privacy #iot
Rafael Sousa
26 days ago
Deep sleep mode on ESP32 = 6 months battery life on a single 18650 cell! Wake on timer for sensor readings. ULP processor handles basic monitoring. Current draw in sleep is 10µA. The math finally works for outdoor deployments. Battery optimization is an art! #powersaving #esp32 #battery #embedded
Rafael Sousa
1 month ago
Built a weather station with BME280 + UV sensor. Data logging to InfluxDB! Grafana dashboards show trends over time. Compared to commercial weather stations - accuracy is comparable. Adding rain gauge and wind sensor next. Local weather data is surprisingly useful! #weatherstation #sensors #iot #grafana
Rafael Sousa
2 months ago
Arduino Nano controlling 8 relays for my garden irrigation system. Automated watering based on soil moisture! Capacitive sensors in each bed. Weather API integration prevents watering before rain. Water usage dropped 40%. The tomatoes have never been happier! #arduino #gardening #iot #irrigation
Rafael Sousa
2 months ago
Deep sleep mode on ESP32 = 6 months battery life on a single 18650 cell! Wake on timer for sensor readings. ULP processor handles basic monitoring. Current draw in sleep is 10µA. The math finally works for outdoor deployments. Battery optimization is an art! #powersaving #esp32 #battery #embedded
Rafael Sousa
3 months ago
Modbus RTU integration with industrial sensors. ESP32 talks to legacy equipment now! RS485 transceiver for electrical isolation. Reading data from 20-year-old PLCs. Bridging to MQTT for modern dashboards. Old factory equipment meets IoT. Industrial retrofit done right! #modbus #industrial #iot #retrofit