FireBeetle 2 ESP32-C6 IoT Development Board

Q: Hello, data cannot be printed on serial port?

1. Check if the USB CDC is enabled2. Check print information using other serial debugger.

Q: Help, what will cause burning error?

There is no delay or too short delay in Loop.<img src="https://dfimg.dfrobot.com/nobody/wiki/9f7b5cc74db4a531f094b2e8f2c0947e_0x0.png.webp" alt="">The USB cannot be recognized by the PC as some functions are incorrectlly called.<img src="https://dfimg.dfrobot.com/nobody/wiki/a4a7bf05576b039fdc32bac629822231_0x0.jpg.webp">How to solvePress and hold BOOT, click RST, and then release the BOOT button to burn.Principle During the initialization process, ESP32 undertakes a verification of the voltage level on the BOOT (IO9) pin. If the voltage level is determined to be high, the system proceeds with a normal startup. In contrast, if the voltage level is deemed to be low, the device enters into the programming mode. By default, the BOOT pin maintains a high voltage level, but it transitions to a low level when a button is pressed.

1. Example Code for Arduino - Getting Started

ESP32 configuration in Arduino IDE involves adding the board, selecting development settings, and burning code. Learn first-time setup, including serial port configuration and troubleshooting for optimal performance.

2. Example Code for Arduino - Battery Voltage Measurement

This example demonstrates how to measure the FireBeetle 2 ESP32-C6’s battery voltage.

3. Example Code for Arduino - Drive a Display on ESP32-C6

This project shows how to use the FireBeetle 2 ESP32-C6 and DFRobot_GDL library to drive a 1.8" 128×160 IPS TFT LCD via SPI for basic graphic and text display.

4. Example Code for Arduino - Display temperature & humidity on OLED

Get temperature & humidity information and display them on OLED.

5. Example Code for Arduino - Get WiFi Weather Infromation

This example domenstrates how to get weather information and extract data from information obtained in HTTP through Json, and print it out.

6. Example Code for Arduino - Get Network Time via WiFi

Get time from network time server and keep time updated using he RTC clock on ESP32.

7. Example Code for Arduino - Obtain Temperature & Humidity

This example introduces how data transmission works over WiFi in local area network. Users can learn how to access the IP address under the LAN to obtain the SHT30 temperature and humidity sensor status in another place.

8. Example Code for Arduino - ESP-NOW Data Transfer

SP-NOW is a protocol developed by Espressif, which enables multiple devices to communicate with one another without using Wi-Fi. It can be widely used in smart light, remote controlling, sensor, etc.

9. Example Code for Arduino - Control LED via WiFi

The ESP32 is equipped with WiFi function. The example below creates a WiFi server using ESP32, and then connects a client to this server to control the LED's ON/OFF.

10. Example Code for Arduino - ESP32-C6 Bluetooth Receive & Transmit

This project demonstrates BLE data transmission with the FireBeetle 2 ESP32-C6, enabling wireless communication between an ESP32 and a mobile phone or between two ESP32 boards.

11. Example Code for Arduino - Smart Config One-click Networking + Auto-Connection

The demo below allows for one-click networking with Espressif ESP-TOUCH.

Specification

Basic Parameters

Parameter	Details
Operating Voltage	3.3V
Type-C Input Voltage	5V DC
VCC Input Voltage	5V DC or 5V Solar Panel
Max Charging Current	0.5A
Sleep Current (Deep Sleep Mode, Battery-Powered)	Version 1.0: 16μA Version 1.2: 36μA
Operating Temperature	-10~60℃
Dimension	25.4x60mm/1x2.36”

Hardware Information

Parameter	Details
Processor	RISC-V single-core processor
Main Frequency	160 MHz
SRAM	512KB
ROM	320KB
Flash	4MB
RTC SRAM	16KB
USB	USB 2.0 CDC

WIFI

Parameter	Details
WIFI Protocol	IEEE 802.11b/g/n IEEE 802.11ax (20 MHz-only non-AP mode)
Bandwidth	Support 20 MHz and 40 MHz at 2.4 GHz band
WIFI Mode	Station, SoftAP, SoftAP+Station combined mode
WIFI Frequency	2.4GHz
Frame Aggregation	TX/RX A-MPDU, TX/RX A-MSDU

Bluetooth

Parameter	Details
Bluetooth Protocol	Bluetooth 5, Bluetooth mesh
Bluetooth Frequency	125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps

IEEE 802.15.4

Parameter	Details
Protocol	Compatible with IEEE 802.15.4-2015 protocol
Frequency band	2.4GHz
Data rate	250Kbps
Supports	Thread 1.3 and Zigbee 3.0

Ports

Parameter	Details
Digital I/O	x19
LED PWM	6 Channel
SPI	x1
UART	x3 (LP UART x1)
I2C	x2 (LP I2C x1)
I2S	x1
IR Transceiver	transmit channel x2, receive channel x2
ADC	1 × 12-bit SAR ADC, 7 Channel
DMA Controller	transmit channel x3, receive channel x3

Pinout

Board Overview

Pin & Component Description

Label	Description
Type-C	Type-C USB port
IO15 / D13	Onboard LED pin
Charge	Charging indicator
	Off: Not plugged into power supply or fully charged
	On: Charging
RST	Reset button
IO9 / D9 / BOOT	GPIO9 / Boot button
HM6245	3.3 V low-power LDO (V1.0) Datasheet
TPS62A02DRLR	3.3 V DC-DC converter (V1.1) Datasheet
BAT	Lithium-ion / lithium-polymer battery interface
IO0	Battery voltage detection pin
CN3165	Solar power management chip Datasheet
GDI	GDI display interface
ESP32-C6	ESP32-C6FH4 MCU Datasheet

Pin Diagram

Pinout

Pin Definition

Category	Pin / Interface	Description
Power	VIN	5 V DC input or 5 V solar panel
	3V3	3.3 V regulated output
GND	GND	Common ground
GPIO	GPIO	ESP32 default GPIO numbering
Arduino	Arduino GPIO	FireBeetle 2 ESP32-C6 GPIO mapping in Arduino
ADC	ADC	ESP32 analog-to-digital conversion pin
I2C	I2C	I2C interface
	SDA / SCL	FireBeetle 2 ESP32-C6 I2C mapping in Arduino
	LP_SDA / LP_SCL	Low-power I2C pins
UART	UART	UART interface
	LP_TX / LP_RX	Low-power UART pins
SPI	SPI	FireBeetle 2 ESP32-C6 SPI mapping in Arduino
SDIO	SDIO	ESP32 default SDIO pins
JTAG	JTAG	Debug interface

Connect Solar Panels

GDI Display Interface

This interface is a DFRobot dedicated GDI display interface for connecting a screen using a 18pin-FPC wire.

The pin list for using GDI camera interface is shown below:

FPC PINS	FireBeetle 2 ESP32-C6 Pins	Description
VCC	3V3	3.3V
LCD_BL	15/D13	Backlight
GND	GND	GND
SCLK	23/SCK	SPI clock
MOSI	22/MOSI	Host output, slave input
MISO	21/MISO	Host input, slave output
LCD_DC	8/D2	Data/command
LCD_RST	14/D3	Reset
LCD_CS	1/D6	TFT Chip Select
SD_CS	18/D7	SD card chip select
FCS	NC	Font library chip select
TCS	6/D12	Touch chip select
SCL	20/SCL	I2C clock
SDA	19/SDA	I2C data
INT	7/D1	1 INT
BUSY	NC	Tearproof pins
X1	NC	custom pin 1
X2	NC	custom pin 2

When using FPC to connect the screen, please configure the corresponding pin numbers according to the GDL demo. Normally, only three pins need to be configured on different main controllers.

Displays that support GDI: