HC-05 Bluetooth Shield for Arduino
- Bluetooth serial port Profile
- Bluetooth protocol: Bluetooth Specification v2.0+EDR
- Frequency: 2.4GHz ISM band
- Communication Range: 10M
- Serial Bluetooth module for Arduino
- Can operate in Master, Slave or Master/Slave mode
- UART interface (TTL) with programmable baud rate (SPP firmware installed)
- Default baud rate: 38400(CMD MODE) / 9600(DATA MODE), data bits: 8, stop bit: 1, Parity: No parity
- Onboard PCB antenna
- FCC ID certificated
ESP8266 WIFI Shield
- Operating voltage 5V (supplied from the Arduino Board)
- Connection via: 802.11b/g networks
- Encryption types: WEP and WPA2 Personal
- Connection with Arduino on SPI port
- on-board micro SD slot
- ICSP headers
- FTDI connection for serial debugging of WiFi shield
- Mini-USB for updating WiFi shield firmware
- 32-bit RISC architecture
- The processor can operate at 80MHz / 160MHz
- 32MB flash memory
- 64kB for instructions
- 96kB for data
- Operates in AP, Station or AP + Station mode
- It has 11 digital pins
- It has 1 analogue pin with 10-bit resolution
- Digital pins except the D0 have interrupts, PWM, I2C and one wire
- Programmable through USB or WiFi (OTA)
- Compatible with Arduino IDE
- Compatible with modules and sensors used in Arduino
16×2 (1602) LCD Keypad Shield
- Operating Voltage:5V
- 5 Push buttons.
- RST button to reset Arduino program.
- Integrate a potentiometer for adjusting the backlight.
- Expanded available I/O pins.
- Blue light with white characters.
- Uses 4 Bit Arduino LCD Library
- Screen contrast adjustment
- Arduino Reset button
- The keypad consists of 6 keys select, up, right, down, left and reset.
- To save the digital IO pins, the keypad interface only uses one ADC channel.
- The key value is read out through a 5 stage voltage divider.