Here is a closeup picture of the project: Here, I want to measure the power consumption as well, so I’ll also be using a breadboard power supply, and connect the power to a multimeter so I can measure the current flowing through the chip. If you just want to use the project with a low power consumption, you simply need to connect the DTR pin of the board to the XPD pin, which will make sure the chip can wake up from the deep sleep mode. As we just want to lower the power consumption of the board, the configuration will be quite simple here. You will also need the latest version of the Arduino IDE, as well as the ESP8266 board definitions. This is the list of the required components for this project: You will also need a 3.3V FTDI USB adapter, as well as a breadboard and jumper wires. Optionally, to test the power consumption part, you will also need a breadboard power supply, a multimeter, and a LiPo battery. Here, I choose the SparkFun ESP8266 Thing as it allows to work at very low powers. Here, as we want the project to be low-power, the most important is to choose a board without a lot of features, so there are no extra components to reduce the battery life of your project. The first thing you need is an ESP8266 board. Let’s first see what we need to build this project. Let’s dive in! Hardware & Software Requirements That’s why in this article, I will show you how to significantly reduce the power consumption of your ESP8266 boards using the deep sleep mode of the chip, so you can build projects that will last for years on a single battery. For example, an ESP8266 chip with a standard 2500mAh LiPo battery would last for about 30 hours. This is for example the case for a motion sensor that you will install in your home, or a data logger you would put in a remote location.įor those cases, you don’t want to be changing the batteries constantly. However, in some cases, we want to build projects that are only powered by batteries. I for example build data loggers that are constantly connected to the mains electricity, and appliances controller which also have an easy access to power. For most of the projects I am building with the ESP8266 WiFi chip, I usually don’t care too much about the power consumption aspect.
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