There is a built-in LED driven by digital pin 13. The microcontroller used in this board is ATMEGA328P-AU. This information can be checked at the top of IC. Before you load a new program on the Arduino IDE, you must know what IC is on your board. You can regard it as the brain of your board. When connecting to PC, program the firmware to ATMEGA 16U2-MU.Įach control board has its own microcontroller. ![]() ICSP is an AVR, an Arduino micro-program header consisting of MOSI, MISO, SCK, RESET, VCC, and GND. Sometimes used to set an external reference voltage (0-5V) as the upper limit of analog input pins. The pin D3, D5, D6, D9, D10, and D11 can be used to generate PWM.įor digital port, you can connect through female headers, or through pin headers (labeled S) of 2.54mm pitch. Or used as digital output pin to drive different modules like LED, relay, etc. ![]() These pins can be configured as digital input pin to read the logic value (0 or 1). It has 14 digital input/output pins, labeled D0 to D13 (of which 6 can be used as PWM outputs). Select the voltage of 3.3V or 5V via a slide switch. When connecting to PC, program the firmware to ATMEGA328P-AU.ĤPins (GND, VCC (3.3V or 5V controlled by slide switch), RX, TX) In fact, slave the output devices under the SPI bus host. It is often called the SPI (serial peripheral interface) and can be considered an "extension" of the output. ICSP is the AVR, an Arduino micro-program header consisting of MOSI, MISO, SCK, RESET, VCC, and GND. ICSP (In-Circuit Serial Programming) Header Here is an explanation chart of what every element and interface of the board does: It contains everything needed to support the microcontroller simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.ģ2 KB (ATmega328) of which 0.5 KB used by bootloader When connect external power, output 5V, drive current is 2A. When connect external power, output 5V, drive current is 1A.īut for this keyestudio UNO with headers, its voltage-regulator chip is MP2307DN. So it is more easier to connect external sensors and modules.Īs for keyestudio UNO R3 board, its voltage-regulator chip is NSP1117. It also breaks out two 4PIN headers for serial communication and IIC communication. When switched to 3.3V, level on serial communication port is 3.3V, voltage of pins is 3.3V. When switched to 5V, level on serial communication port is 5V, voltage of pins is 5V. You can control the voltage of VCC via a slide switch for 5V or 3.3V. S pins correspond to all 14 digital pins, 6 analog pins. It breaks out all the digital and analog pins in the form of 3PIN headers (G, V, S). This UNO with pin headers makes the improvement based on keyestudio UNO R3 board. ![]() 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, 2 ICSP headers, and a reset button. It is a microcontroller board based on the ATMEGA328P-AU, which has the same function as ATMEGA328P(-PU), fully compatible with ARDUINO UNO REV3. Keyestudio UNO with pin headers has the same basic functions as keyestudio UNO R3 BOARD.
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