Overview
Things
Story

Requirements
Build and Flash
Using the screen

Published April 29, 2020

Wi-Fi Controlled LCD Screen Using ESP RainMaker

Build a Wi-Fi LCD screen and control it from a phone app.

BeginnerProtip2 hours1,186

Wi-Fi Controlled LCD Screen Using ESP RainMaker

Things used in this project

Hardware components

Espressif ESP32-WROVER-Kit

Software apps and online services

Espressif ESPRainMaker

Story

Wi-Fi controlled LCD screen using ESP RainMaker

This is a Wi-Fi controlled LCD screen. Put it up on your desk, door, shop, grocery aisles or conference rooms. Easy to change using an iOS/Android phone app.

Requirements

Hardware

ESP32-WROVER-KIT

Software

ESP RainMaker: Set up your development host as mentioned here: https://rainmaker.espressif.com/docs/get-started.html

Build and Flash

$ git clone https://github.com/kedars/rainmaker-lcd-screen
$ git clone https://github.com/kedars/rainmaker-lcd-screen

$ cd rainmaker-lcd-screen
$ cd rainmaker-lcd-screen

$ RAINMAKER_PATH=/path/to/where/esp-rainmaker/exists idf.py build flash monitor
$ RAINMAKER_PATH=/path/to/where/esp-rainmaker/exists idf.py build flash monitor

Using the screen

Enter the status you want to display by hitting the Edit button

Download the ESP RainMaker iOS/Android phone app
Boot up the ESP32-WROVER-KIT
Configure the ESP32-WROVER-KIT using the phone app

1 / 2

/* Callback to handle commands received from RainMaker */
static esp_err_t lcd_callback(const char *dev_name,
                              const char *name,
                              esp_rmaker_param_val_t val, 
                              void *priv_data)
{
    if (strcmp(name, "string") == 0) {
        ESP_LOGI(TAG, "Received value = %s for %s - %s",
                val.val.s, dev_name, name);
        if (app_lcd_write(val.val.s) == ESP_OK) {
            esp_rmaker_update_param(dev_name, name, val);
        }
    }
    return ESP_OK;
}

Credits

Kedar Sovani

1 project • 1 follower

Application Frameworks at Espressif

Contact

Comments

Please log in or sign up to comment.

Wi-Fi Controlled LCD Screen Using ESP RainMaker

Things used in this project

Hardware components

Software apps and online services

Story

Requirements

Build and Flash

Using the screen

Code

LCD Callback

LCD Parameter

Github

Credits

Kedar Sovani

Comments

Embed the widget on your own site

Wi-Fi Controlled LCD Screen Using ESP RainMaker

Wi-Fi Controlled LCD Screen Using ESP RainMaker

Things used in this project

Hardware components

Software apps and online services

Story

Requirements

Build and Flash

Using the screen

Code

LCD Callback

LCD Parameter

Github

Credits

Kedar Sovani

Comments

Related channels and tags