Electronic, 3D printing and embedded programming
Here a tutorial on E32 LoRa (Long Range) device very cheap and very long range (from 3Km to 8Km).
In this chapter we are going to wake on radio the LoRa E32 and microcontroller and we show the ESP32 DEV KIT v1 shield created for this device.
The ESP32 has enough resources to be able to use a FAT system which is certainly more expensive in terms of resources, but which offers large dimensions and few limitations, as well as compatibility with various devices.
LittleFS was recently added and focuses on higher performance and directory support, but has a higher resource consumption and occupancy per file, although not by default for esp32 it should be remembered that it takes up less resources than FatFS.
When you use a microcontroller an important features is store data, for logging or setting, for a web server or to show image. The better solution is an SD card, because It’s simple, small and low power device.
Now we are going to look how to connect and use with standard SD library with esp32.
ESP32 has the ability to take advantage of many power saving modes, there are also many wake up sources, some are specific for light sleep and in this article we will focus on UART and GPIO wake up.
ESP32 has the ability to take advantage of many energy saving modes, but when you set sleep you also lose the status of the pins, but there is a way to preserve it and we will analyze it. Furthermore, the esp32 has powerful features such as the UPL a low-power processor that can wake you up in case of need.
ESP32 has the ability to take advantage of many energy saving modes, but if you use more aggressive sleep you can lost session, we look to how preserve the data and how to wake at a given moment in time and via touch.
ESP32 has the ability to take advantage of many energy saving modes, here we will understand how to put the device in deep sleep and hibernation mode but above all we will try to understand the differences.
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.
