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MaESP ESP32-C3 OLED

Introduction

MaESP ESP32-C3 OLED is a development board for IoT applications. Base on esp32-C3, which is open-source RISC-V architecture. The development board can act as a WIFI node easily, at the same time it can use Bluetooth to communicate. OLED displays have some advantages of being lightweight and working well under low-temperature environment, and it also saves energy, which can work for a long-time. It can still display normally at -40℃, but LCD can't do.

Model: MAESPC3OL

Features

  • Integrated ESP32-C3 with 2.4 GHz Wi­Fi and Bluetooth5 (LE)
  • Ultra­Low­Power SoC with RISC­V Single­Core CPU
  • Simultaneous support for Infrastructure BSS in Station mode, SoftAP mode, Station + SoftAP mode, and promiscuous mode
  • Wi-Fi Protocols: 802.11b/g/n(802.11n up to 150Mbps),A-MPDU and A-MSDU aggregation and 0.4us guard interval support
  • Bluetooth Have High power mode(18dBm) and different speed to choose(125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps)
  • 22 or 16 programmable GPIOs and 3 x SPI, 2 x UART, 1 x 12C, 1 x I2S
  • LED PWM controller, with up to 6 channels, Full-speed USB Serial/JTAG controller, General DMA controller (GDMA), with 3 transmit channels and 3 receive channels
  • Flash encryption, 4096-bit OTP, up to 1792 bits for use, Cryptographic hardware acceleration: AES-128/256 (FIPS PUB 197)
  • 2 x 12-bit SAR ADCs, up to 6 channels, 1 x temperature sensor, 2 x 54-bit general-purpose timers, 3 x watchdog timers, 1 x 52-bit system timer.
  • Power supply: 5V, Type-C USB
  • Board size: 32.5mm * 72mm

Diagram

MaESP.png

Usage

ESP32-C3 combines with OLED, which will be a good experience by using it. Let's take a look at what projects we have.

Software setup

To ensure the running environment, the same version is recommended.

All the projects are based on MaESP32 C3 OLED development board.

1.Install the Arduino IDE V1.8.19.

2.Install the ESP32-C3 boards supporting package V2.0.5

ESP32C31.jpg

  • Click “Tools>Board>Boards Manager” to search for and install the ESP32 library:

ESP32C32 . jpg.png

3.Select and set the parameter in the Tools menu, as the picture:

ESP32C33.jpg

Note: Different PC has different Serial COM number.

Project 1 OLED display test

1.You can get the source code from Github.

2.Open the file CDC_oled under the example file.

3.Verify and upload it.

ESP32C34.jpg

4.After uploading, you will see the Serial Monitor as follows.

1.oled test.JPG

Maesp32picture1.new.jpg

Project 2 DHT11_ThingSpeak Demo

Using the DHT11 sensor model in this Demo.

Sensor MaESP ESP32-C3
Sensor's GND MaESP ESP32-C3' GND
Sensor's DATA MaESP ESP32-C3's GPIO4
Sensor's VCC MaESP ESP32-C3's VCC

1.You can get the source code from Github.

2.Open the file DHT11_ThingSpeak under the example file.

3.Modify your Wi-Fi ssid, password and ThingSpeak API key in the code.

Maesp32project 3 modify.JPG

Maesp32picture2.2.JPG

4.Verify and upload it.

ESP32C34.jpg

5.After uploading, the sensor data will be displayed as follows.

Maesp32picture2.jpg

Maesp32picture2 page.JPG

Note: Click http://wiki.makerfabs.com/ESP8266_WiFi_Shield.html#iot-project, and it will teach you how to apply for a new Thingspeak account.

Project 3 NTP Time Demo

1.You can get the source code from Github.

2.Open the file NTP_time under the example file.

3.Modify your Wi-Fi ssid, password and ThingSpeak API key in the code.

Maesp32project 3 modify.JPG

4.Verify and upload it.

ESP32C34.jpg

5.After uploading, OLED screen will display the NTP time as follows.

Maesp32project3.1.jpg

FAQ

You can list your question here or contact support@makerfabs.com for technology support. Detailed descriptions of your question will be helped to solve your question.

  • Q1:Can't upload the code
  • A1:Let ESP32 in download mode by pressing the RESET key after holding the FLASH key when you're uploading the code.

Resources