ESP32 CYD with LVGL: Display Temperature with DS18B20 Sensor

By understanding the strengths and weaknesses of each, you can confidently select the microcontroller that aligns with your project’s goals and requirements. In terms of Bluetooth capabilities, the ESP32 has built-in support for both Classic Bluetooth and Bluetooth Low Energy (BLE). This makes it suitable for applications that require wireless communication with a variety of devices, such as smartphones, tablets, and other IoT nodes. The ESP8266, on the other hand, has a single-core processor and is generally more suited for simpler applications that don’t demand extensive processing capabilities. The main disadvantage of the ESP32 is that it is not compatible with all Arduino libraries.

ESP32 vs. STM32: GPIOs

So, in terms of programming support and community resources, there is little to no competition between the two boards; both provide an extensive range of supported languages and resources. Due to its lower power consumption in active mode, the ESP8266 is better suited for simple, low-power projects powered by a battery pack. The ESP8266 features a 32-bit Tensilica Xtensa L106 single-core processor, running at 80 MHz, which can be overclocked to 160 MHz. It comes with 32 KB of instruction RAM, 80 KB of user-data RAM, and external QSPI flash – 512 KB to 4 MB. It operates on a Tensilica Xtensa LX3 processor and is primarily intended for smart devices, wearables, and Wi-Fi-enabled projects.

ESP32 vs ESP8266: Core Differences

Finally, set the text_label_temp_value text to that string using the lv_label_set_text() function. We then, check in which range the temperature value is to set its color accordingly. Frist, we check if we need to display the temperature in Celsius or Fahrenheit degrees depending on the value of the TEMP_CELSIUS variable. Let’s now take a look at the set_temp() callback function that will run every 10 seconds.

A Comprehensive to ESP32 Pinout Diagram

The ESP8266 has lower power consumption than the ESP32, making it more suitable for battery-powered projects. However, the ESP32 has a lower power consumption than traditional microcontroller boards, and its dual-core design enables power-saving features unavailable on the ESP8266. ESP32 and ESP8266 are two microcontroller boards developed by Espressif Systems that are popularly used for building Internet of Things (IoT) projects. These boards are compact, low-power, and have built-in Wi-Fi connectivity, making them an ideal choice for many applications. The ESP8266 tends to have lower power consumption compared to the ESP32, making it suitable for battery-powered applications where energy efficiency is crucial.

The two solid curved lines are for automatic light-sleep where loop() iterates periodically andthere is approximately one broadcast packet every 10 seconds on the network that also wakes-up themicrocontroller. All these possibilities of using the Arduino IDE gave momentum to the proliferation of ESP microcontrollers in various models. Add Wi-Fi, Bluetooth (for the ESP32), and low-power consumption, and we have the bestseller among microcontrollers. ESP 8285 with almost the same price provides more resources and performance, compared with ESP8266. ESP8285 has ultra-low power 32-bit MCU with 16-bit RISC core, and WiFi b/g/n/d/e/i/k/r connections. ESP8266 power consumption is comparatively low for such solutions with WiFi.

Some of the features were clearly listed when ESP32 was first announced, but for example, I was not aware that an Ethernet MAC, and a temperature sensor were built into the new SoC. Other interesting features for the new ESP32 processor include a touch sensor, and hardware PWM both of which are missing in ESP8266. https://traderoom.info/ Both cases specify all parameters to WiFi.begin and WiFi.config, i.e. they’rethe optimized cases. The ESP8285 module is a continuation of the ESP8266 line and has a higher degree of integration and reduced dimensions. With the same functionality, the ESP8285 chip has a 1MB program memory operating in DUOT mode.

So the main difference comes down to speed, and for the ESP32 that istwice the speed of the ESP8266. Additionally the ESP32 has a dual corearchitecture further enhancing performance. The ESP32 also has far moreSRAM than the ESP8266; actually four times the ESP8266 SRAM.

As a reference point, consider the pin configuration diagram for the ESP8266 ESP-12E NodeMCU Kit. The price of the ESP8266 breakout board is almost half of the ESP32. ESP32 has 38 pins, out of which 30 pins are GPIOs, and ESP8266 has 22 pins, out of which 17 are GPIOs.

Then, you need to add the following lines to make the animation work and run forever as long as the program is running. In our case, we’re setting it to 10 seconds (this function will update the screen with the newest data). Once we’ve defined all the properties of our style, we can finally apply it to our text_label_temp_value using the lv_obj_add_style() function as follows.

The ESP32 offers more GPIO pins compared to the ESP8266, providing greater flexibility when connecting multiple sensors, actuators, and peripherals. Additionally, the ESP32 supports a wider variety of input and output options, including analog inputs, PWM outputs, and more. ESP8266 and ESP32 are both popular choices for IoT projects, but there are some important differences to take into account when deciding which one to use. ESP8266 is a cheaper and less powerful option, with limited storage and processing capabilities. ESP32 is a more expensive and powerful option, with more RAM and ROM, as well as support for Bluetooth and WiFi. Some microcontrollers come with built-in security features, while others require external components.

The ESP32 has a USB interface that can be used to connect to peripherals such as keyboards, mice, and storage devices. The ESP8266 does not have a USB interface and thus cannot be used with these peripherals. The ESP8266 does not have a dedicated camera interface and thus cannot be used with image sensors. Again, the ESP32 SoC itself is not maker-friendly and thus most makers will use a pre-made module that integrates all needed components to work with the ESP32 easily.

ESP32 has a larger memory capacity, which allows ESP32 to handle more complex applications and larger amounts of data. You need that computational power to create the 802.11b/g/n WiFioperation but it is https://traderoom.info/brainwagon-the-esp32-vs-the-esp8266/ also true that while you need that to communicate toa web page you can design a system that only periodically updates anoutput. For instance you may want to get a temperature reading only oncean hour.

ESP32-S3 features a full-speed USB OTG interface along with an integrated transceiver. Temperature sensor will not be very accurate, since is influenced by the CPU activity. EspressIf also recommend to read temperature before starting the wifi, which also influence the value.

When it comes to onboard sensors, the ESP8266 is quite minimalistic; it does not have any built-in sensors. The ESP8266 is a low-cost Wi-Fi microchip with a built-in TCP/IP stack and microcontroller capability, released in 2014 by Espressif Systems in Shanghai, China. The following table shows the main differences between the ESP8266 and ESP32 chips (table adapted from AMICA_IO). The ESP32 and ESP8266 are inexpensive Wi-Fi modules that are perfect for DIY projects in the Internet of Things (IoT) and home automation space.

1. Espressif Systems is known for its popular microcontrollers, ESP32 and ESP8266.
2. It describes some of the problems that designers face with power sourcing and provides some solutions.
3. You can check the diagram below to see how to connect the sensor to the board.
4. In our case, we’re setting it to 10 seconds (this function will update the screen with the newest data).
5. The ESP8266 was very popular because it only cost a few dollars and allowed anyone to program an inexpensive microcontroller with Wi-Fi capabilities.

The ESP8266 is generally less expensive than the ESP32, making it a more cost-effective choice for simpler projects. The ESP32, with its enhanced features and capabilities, is slightly more expensive but offers better processing power and versatility. Understanding the peripheral interfaces of microcontrollers is crucial when comparing them.