For those looking to add wireless connectivity to embedded projects or to build IoT devices, the ESP32 is arguably the most popular choice. It offers a dual-core option for processor intensive applications, while built-in WiFi and Bluetooth simplify designs. It also has plenty of I/O, memory, and interoperability to meet the needs of most applications.

In this comprehensive guide, we‘ll explore how to power the versatile ESP32 microcontroller using batteries for wireless, portable applications.

You may be wondering:

What battery chemistry provides the ideal voltage?

How long will different capacities last for my use case?

What‘s the best way to connect a battery to ESP32?

How can I optimize my ESP32‘s code for better battery life?

We‘ll cover guidelines for selecting the right battery type and capacity, wiring configurations, power management best practices, and real-world examples. Let‘s get started!

Features

Visualize topics and topic activity
Delete retained topics
Search/filter topics
Delete topics recursively
Diff view of current and previous received messages
Publish topics
Plot numeric topics
Retain a history of each topic
Dark/Light Themes
… See Changelog to see all features

The hierarchical view makes this tool so easy to use and differentiates the MQTT Explorer from other great MQTT clients like MQTTLens, MQTTBox and MQTT.fx.
This MQTT Client strives to be a MQTT swiss-army-knife, the perfect tool to integrate new services and IoT devices on your network.

Learn how to use the DHT11 and DHT22 temperature and humidity sensors with ESP32 using Arduino IDE. It includes wiring, circuit diagram and Arduino sketch.

La gestion de l’énergie est importante en ces temps d’augmentation. Cet article présente comment récupérer les données de la prise Tele-information de son compteur Linky via un module ESPHome. Nous verrons ensuite comment suivre sa consommation avec Home Assistant et son Dashboard Energy.

Choisir le module ESP32 pour son installation domotique en le flashant avec ESPHome IoT MadeInFck Domotique sur ESP32: ESPEasy ou ESPHome ? (4/6)

Tuto domotique Home Assistant avec ESPHome, l'outil idéal pour les projets DIY avec les micro-contrôleurs ESP32 et ESP8266.