ESP32 NodeMCU now available for € 8 (including shipping) [Exclusive Guide]

8:02 pm April 4, 20177532

the successor of the ESP8266, the ESP32 was launched in September 2016. It is based on a 32 bit dual-core manufactured by TSMC on 40nm SoC (which also makes the SoC of the iPhone). It is more powerful and more economical energy than the ESP8266. It also adds Bluetooth connectivity to WiFi . The ESP32 also provides a greater number of GPIO (32 x), a cryptographic chip and an operating temperature range extended (-40 ° C to + 125 ° C). Upon its release, we found quickly for about € 3 modules then maps of development for about € 20. This rate is too high and badly positioned compared to the competition. Indeed, on one side, we find the ESP8266 for about €4 . The other is the Raspberry Pi Zero for about € 10. The Raspberry Pi Zero W coming out also offers WiFi and Bluetooth for about € 11. Like its little brother, it is quite difficult to obtain outside of kits (from €26 ).

NodeMCU ESP32S wroom-32 ESP32

Today, things are starting to move. Development cards based on the ESP-WROOM-32 module found in the Chinese merchants. At Banggood, you’ll find the map Geekcreit ESP32 € 11,50 ( on sale for € 8,50 ). But it’s mostly on Aliexpress is currently the best price. The FACE-TO-FACE Electronic store offers a stamped card NodeMCU €8, shipping included (€ 6.47 + € 1.53) . A GitHub repository was opened here and offers several examples in Lua ( camera OV7725 , screen LCD Nokia5110, led…).

NodeMCU ESP-32S gpio dessous

the NodeMCU ESP-32 development card specification (full sheet available here ):

  • SoC ESP-WROOM-32 – Espressif ESP32 – 240 MHz dual core TSMC Tensilica LX6 – 520 KB SRAM – 16 MByte flash
    • connectivity

    • WiFi: 802.11 b/g/n
    • Bluetooth 4.0 (Low Energy)
  • GPIO : 2 x 19 pins
    • 3 x UART
    • 3 x SP
    • 2 x I2C
    • 12 x ADC (analog inputs)
    • 2 x DAC
    • PWM/timer input/output available on all of the GPIO pins
    • Compatible breadboard
  • USB: 1 x port micro USB for power and programming
  • hardware Cryptography integrated support the standards : AES / SHA2 / smooth Curve Cryptography / RSA-4096
  • power: 5V USB or PIN
  • wine

  • size: 51.4 x 28.3 mm

if the programming in Lua doesn’t appeal to you, you can turn this GitHub project to developed by Espressif which allows to take in charge the ESP32 on the Arduino and PlatformIO IDE.