Installation of the driver will start, after which you can start working with the schematic. A window will appear on your monitor where you should press the Install button.Search for the SETUP.EXE file, launch it.Download the archive with the driver for the required operating system (Windows, macOS and Linux).Installation is performed in several stages: To start working with this chip, you need to install the driver on your computer. With this programmer, you can easily flush Arduino boards. It allows you to reduce the cost of board production without affecting its performance. The CH340 chip is often used in Arduino boards with a built-in USB-to-Serial converter. The only difficulty may arise when working with a board based on the chip ATMEGA 168 – in the settings, you need to select first board Nano, and then the desired option processor. Connecting the Arduino NanoĬonnecting the Arduino Nano board to your computer is not very difficult – it is similar to a regular Uno board. Therefore, you should consider how to simplify the design as much as possible to reduce the number of contacts needed to connect the device at the schematic stage. Microcontrollers have a lot of functionality, but they have one drawback – it’s a limited number of pins in the battle with the Arduino Mega. A4 (SDA), A5 (SCL) – are used for communication via the I2C bus. 18 – AREF is a reference voltage for the ADC microcontroller.D10 – SS, D11 – MOSI, D12 – MISO, D13 – SCK are also used for SPI communication. 8 – A5, counter T1 / I2C SCL / PWM bus.AIN0 and AIN1 are inputs for a fast analog comparator. RX and TX can be used for serial communication or as regular data ports. UART: D0 and D1 (TX and RX, accordingly).Analog inputs/outputs: A0-A7 (10-bit ADC).The analogWrite() function is used to work with PWM outputs. Arduino nano is equipped with six such pins: D3, D5, D6, D9, D10, D11. On some digital pins, you can see the ~ symbol. They do not have pull-down resistors they measure the voltage applied to them and return the value using the analogRead() function. The analog pins are marked with the letter A and are used as inputs. The contacts are used as inputs and outputs each of them has a pull-up resistor. Arduino Nano PinoutĪrduino Nano board has 14 digital contacts, which are marked with the letter D (digital). uses a chip ATmega168 with less memory (flash, non-volatile) and lower clock frequency, version 3.0. There are versions 2.X, 3.0., which differ only in the chip on which they work. The last general-purpose LED lights up when a high signal is given.Īt the moment, there are several types of Arduino Nano. The PWR LED lights up when the voltage is 5V and indicates that power is connected. The first two LEDs light up when the signal level is low and indicate that a TX or RX signal is active. They are designated as TX, RX, PWR and L. There are 4 LEDs on the board which show the signal state. The highest inrush or outrush current should not exceed 40 mA, and the total contact current should not exceed 200 mA. In this case, the signal must be connected through a resistor in order not to disable the controller. When power is supplied beyond these values, protective diodes will limit the voltage. All digital and analog contacts work in the range from 0 to 5 V. The Arduino Nano board has the same voltage and current limits for the board inputs and outputs. The diagrams of both types of power supply are shown in the picture.Īt connection of two voltage sources, the board chooses the one with the highest power supply. When connected via a cable from a computer, a connection to the stabilizer is made via the Schottky diode. The external power supply is stabilized with the LM1117IMPX-5.0 5V circuit.
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