Electronic, 3D printing and embedded programming
The Wemos LoLin32 is a development board built around the Espressif ESP-WROOM-32 microcontroller. It boasts 4MB of memory and offers WiFi and Bluetooth connectivity. The Wemos LoLin32 has the particularity to propose a connector for LiPo battery. The connector is JST XH2-2.54mm. It has a key that prevents reverse polarity. Charging the battery and programming will be done using the usual micro-USB connector.
I’m going to publish my LoRa shield for WeMos LOLIN32. This is one of my favorite microcontrollers, and until now, I have been using a simplified version of shield for rapid prototyping, but in the end, I created a more complete version, and I share it with everyone.
ESP32 is capable of light sleep and deep sleep power saving modes, here we are going to learn how to put in modem sleep and light sleep mode your device and what mean put in sleep mode.
The ESP32 is capable to activate the energy saving modes of light sleep and deep sleep, but in many cases we cannot use such a solution, but it is still possible to apply some options to the functional units for reducing energy consumption.
Let’s set the sleep mode, disable the WiFi and scale the frequency to the CPU.
