vinz68 / esp32_stuff

ESP32 code for my ESP32 Development board, using Arduino IDE

ESP32_Stuff

ESP32 code for my ESP32 Development board, using Arduino IDE. See table below.

The hardware

ESP32 Development board called "WiFi Kit 32" Developer board from Heltec Automation with:

• Tensilica LX6 dual-core 32-bits processor, clocked at 240MHz, computing power up to 600DMIPS,
• Chip built-in 520 KB SRAM and Onboard 32MByte Flash
• Bluetooth: integrated dual-mode Bluetooth (traditional Bluetooth and BLE low power Bluetooth)
• Wifi: transceiver 802.11 b/g/N HT40（only PCB Antenna）
• SX1278 chip for LoRa remote modem, 433MHz frequency (measured open area communication distance 2.6Km).
• Onboard 0.96 Inch OLED Display with 128x64 pixels, Blue, SSD1306 chipset/driver
• lithium battery (lipo) charging circuit and interface
• CP2102 Module USB to serial chip
• Compatible with the Arduino development environment.

The Code

Code	Description	Pins used
BasicStepperDriver	Drives a stepper motor, using DRV8825	DIR on GPIO 1
		STEP on GPIO 23
GetrChipID	Displays the unique internal chip id	not applicable
Gyro_and_StepperMotors	Uses a Gyro sensor to drive 2 stepper motors	Work in Progress!
	- Gyro (MPU-9250) is connected via Wire1	SDA on GPIO 21
		SCL on GPIO 22
		INT on GPIO 2
	- Motor-1	DIR on GPIO 1
		STEP on GPIO 23
I2C_Scanner_VibeSoft	Scans for I2C devices on 2nd I2C bus	SDA on GPIO 21
	Output on OLED display and serial port.	SCL on GPIO 22
Sensor_MPU6050	Gyro Sensor, read X,Y and Z angles	SDA on GPIO 21
		SCL on GPIO 22
		INT on GPIO 2
Sensor_MPU9250	9DoF sensor MPU-9250	SDA on GPIO 21
	- 3-Axis accelerometer	SCL on GPIO 22
	- 3-Axis gyroscope	INT on GPIO 2
	- 3-Axis magnetometer
WIFI_KIT_32_VibeSoft	Wifi scanner with minor modifications	not applicable

The documentation

Additional documentation, used in the source code

• 681 pages manual - ESP32
• Heltec files, install guide and bunches of info
• OLED SSD1306 Driver Library - u8g2

I2C Scanner at work with a I2C Gyro sensor (MPU-6050)