The main IC (integrated circuit) on the Arduino is slightly different from the panel pair. You can regard it as the brain of your board. To control the voltage provided to the Arduino board, as well as to stabilize the DC voltage used by the processor and other components.Ĭonvert an external input DC7-12V voltage into DC 5V, then switch DC 5V to the processor and other components.Īrduino board can be supplied with an external power DC7-12V from the DC power jack.Įach Arduino board has its own microcontroller. It tells us that the frequency is 16,000,000 Hertz or 16MHz. The number printed on the top of the Arduino crystal is 16.000H9H. How does Arduino calculate time? by using a crystal oscillator. When Arduino board communicates via serial port, receive the message, RX led flashes. Onboard you can find the label: RX(receive ) When Arduino board communicates via serial port, send the message, TX led flashes. Onboard you can find the label: TX (transmit) USB serial chip, translate the USB signal of computer into serial signal When the pin is HIGH value, the LED is on, when the pin is LOW, it's off.Īrduino board can be powered via USB connector.Īll you needed to do is connecting the USB port to PC using a USB cable. There is a built-in LED driven by digital pin 13. the value used as the top of the input range). Used with analogReference().Ĭonfigures the reference voltage used for analog input (i.e. Reference voltage (0-5V) for analog inputs. Using pinMode(), digitalWrite(), and digitalRead() functions. Or used as digital output pin to drive different modules like LED, relay, etc. Powering the Arduino, LED on means that your circuit board is correctly powered on.Īrduino MEGA has 14 digital input/output pins (of which 6 can be used as PWM outputs).These pins can be configured as digital input pin to read the logic value (0 or 1). When connecting to PC, program the firmware to ATMEGA328P-PU. In fact, slave the output devices to the SPI bus host. It is often called the SPI (serial peripheral interface) and can be considered an "extension" of the output. The AVR, an Arduino micro-program header consisting of MOSI, MISO, SCK, RESET, VCC, and GND. ICSP (In-Circuit Serial Programming) Header Flash Memory: 32 KB (ATMEGA328P-PU) of which 0.5 KB used by bootloader.PWM Digital I/O Pins:6 (D3 D5 D6 D9 D10 D11).We can plug in power by USB wire, DC head and Vin GND pins. The built-in ICSP port can burn the firmware for ATMEGA328P-PU directly. It has 14 digital input/output pins(of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, 1 ICSP header, and a reset button. The processor core of Keyestudio V4.0 development board is ATMEGA328P-PU, fully compatible with ARDUINO UNO REV3. 6.3 How to Install the Driver of CP2102.Ultra small 48P/N LQFP lead-free packageīefore upload the test code, don’t forget to place the necessary library into libraries folder of Adruino IDE.3.3V working voltage, I/O port can withstand 5V voltage.Support sleep mode and network wake-up.Internal 32K byte memory for TX/RX buffer.Support 8 independent ports to connect at the same time.Multiple indicator signal outputs (full/half duplex).Support auto answer (full duplex / half duplex mode).Embedded 10/100Mbps Ethernet physical layer.Support hardware TCP/IP protocol: TCP, UDP, ICMP, IPv4ARP, IGMP, PPPoE.Support high speed SPI bus (SPI mode 0, 3).
W5500 full hardware TCP/IP protocol stack network chip
The shield has four 3mm fixing holes, easy to mount on any other devices. You can direct stack the W5500 Network shield onto control board, or stack other expansion boards on this Network shield. You can quickly make your controller access to internet to build your network application.Īt the same time, it also supports mini SD card(TF card, maximum storage 1G) read and write. When using, stack the W5500 shield onto UNO board, and upload the program to control board, which can make a simple Web server. It is compatible with both keyestudio UNO R3 and Mega 2560 R3 development board. It can make as simple Web server, or write and read the High/Low level of digital pins, or analog value of analog pins via network control. Keyestudio W5500 network shield comes with W5500 network module as core. 2.1 W5500 full hardware TCP/IP protocol stack network chip.