Flashing with a USB to TTL AdapterĪ special adapter, a UART adapter, can be found on the market. Via SPI interface using an Arduino board with a connector to connect to a computer.There are several ways of pouring the sketch into the microcontroller: The miniature size of the board does not allow you to flash it without external help. At the low level, it resets the microcontroller. The board is also equipped with an additional Reset pin. The six analog pins have a resolution of 10 bits. External interrupts – 2 and 3 can be used for interrupt triggering.Intended for receiving and transmitting data. The pins are labeled with a digital number. The microcontroller has 14 pins, each of which can be configured as an input or output. The circuit diagram of the Arduino board is shown below. Arduino Pro Mini Pinout and Circuit Diagram Device for measuring precipitation and wind speed Īnd many other projects for home and country houses.What projects can be implemented based on the Arduino Pro Mini: By feeding a stabilized voltage to the Vcc pin.The dimensions of the board are 0,70 x 1.29 inches (18 x 33 mm).Clock frequency – 8 MHz or 16 MHz depending on model.16Kb of flash memory, 2Kb are used for the boot loader.The total current of the pins – not more than 200 mA.Direct current for input and output 40 mA.14 pins, 6 of which are used as PWM pins.Operating voltage of 3.3V and 5V (depending on the model).Specifications of the Arduino Pro Mini microcontroller: It is initially sold with the firmware already installed. You will need special adapters to download the code. Traditionally, you write the sketch to the microcontroller via the Arduino IDE. Which model it is should be indicated on the case. The first one uses a clock frequency of 8 MHz. There are two models of the Arduino Pro Mini microcontroller – 3.3V and 5V. Wiring can be done either through connectors or by hinged mounting. The connectors are not soldered to the platform. If the user burns the chip by applying an excessive voltage to it, it will be impossible to remove and replace it. Working with the Arduino Pro Mini needs to be done carefully. The Arduino Pro Mini has a slower speed than the Arduino Uno, but this has almost no effect on projects. There are also differences in the speed at which the chip operates. Instead, an FTDI converter interface wire or an optional Sparkfun board is used to create a connection to the computer. Their difference is the inability to flash the Pro Mini via USB-UART. The properties of the Arduino Pro Mini are similar to those of the Arduino Uno and Nano boards. 5 A Comparison of the Characteristics of the Different Arduino Boards Description of the Board
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