[ESP32] Implementation of Deep Sleep Mode and Timer Wake-Up Function
Introduction.Developing "Mia," a talking cat-shaped robot that speaks dialects.After releasing the beta version, several...
ESP32
[ESP32 x Flutter] How to send Wi-Fi scan results in chunks via BLE
Describes how to use ESP32 and Flutter (flutter_blue_plus) to split and send the results of a Wi-Fi scan to a smartphone via BLE, using BLE's Notify function to split large data into smaller packets and reconstruct the received data.
Create PCB by EasyEDA and order PCB by JLCPCB. If you want to keep costs down, request 2 boards to be mounted.
Create schematics in EasyEDA and convert the schematics to PCBs Work on the PCBs includes component placement, number printing, board outline drawing, wiring with auto routing, creating mounting holes and creating solid copper foil After completing the work on the PCBs, order the boards from JLCPCB.
[ESP32] Electronic circuit of the self-made board that can also be driven by LiPo battery
Describes the process of creating a home-made ESP32 board that can support both USB Type-C and LiPo batteries. The charging current is regulated by PROG and the voltage regulator is switched from AMS1117 to ME6211 series; an automatic switching circuit is implemented using PMOSFETs.
[ESP32 x PlatformIO] Move the configuration file (AWS IoT) from LittleFS to the NVS area.
Currently, the configuration file is placed under the data directory and included in the SPIFFS area at the time of build, but when LittleFS storage overflows due to a problem in the download process, etc., there is a possibility of failure, such as reading certificates, so change to writing and reading in the NVS area.
[ESP32] Create NVS encryption key and encrypt NVS partition
Create a new NVS key partition as a dedicated partition for storing the encryption keys required to use the NVS encryption function of ESP32 As an NVS key partition, Type must be data and Subtype must be nvs_keys.
[ESP32 x PlatformIO] How to coexist the framework with Arduino and ESP-IDF
PlatformIO allows the Arduino and ESP-IDF frameworks to be used together: by setting framework = arduino, espidf in platform.ini, many existing Arduino libraries can be used directly, thus reducing the need for code porting This saves time and effort in porting and rewriting code.
[Mia] ESP32 OTA update function implementation: Firmware update app notification
A new Firmware binary is uploaded to the AWS s3 firmware directory with the version specified by the developer.The version of each user's firmware is compared to the latest version uploaded by the developer, and if they are different, the Flutter app is notified that the new firmware is available for installation.
[ESP32] OTA update: Firmware update using MQTT and AWS IoT device shadow
When the user accepts the update, the app sends an API request to the server, which reflects the change in the AWS IoT device shadow. The device detects this change via MQTT and performs a firmware download and upgrade.
[ESP32] How to initialize firmware with a hardware trigger.
Describes the procedure for firmware initialisation using hardware triggering with the TTP223 touch sensor on the ESP32, utilising PlatformIO and TFT_eSPI to display status using the display in safe mode and to perform OTA updates.