From Makers Electronics's description

Description The Pro Micro is an Arduino compatible board based on the ATmega32U4 and the smallest member of the Arduino family. It is similar to the Arduino Micro, but it is even smaller. It is breadboard friendly and the small size allows you to place the Pro Micro into your breadboard rather than jumpering from the board over to a breadboard. The small size also makes them useful for embedding into a permanent project. Package Includes: Pro Micro 5V/16Mhz 2 x Male Header Strips Key Features of PRO MICRO 5V/16MHZ: ATmega32U4 processor running at 16MHz Built-in serial to USB converter 32KB Flash memory 12 Digital I/O 5 PWM shared with the digital I/O 9 Analog inputs that can also be used as digital I/O for a total of up to 20 digital I/O 1 Hardware serial port 5V Operation Extremely small size The Micro Pro uses the same ATmega32U4 processor as used on the Leonardo boards. The board has a Type-C connector and the USB interface is contained within the ATmega32U4 chip and does not require a separate USB chip like most Arduino boards which helps to keep the size small. The board also does away with the reset button and ICSP header to minimize the footprint. If it is necessary to reset the board, the reset pin should be momentarily grounded. The board operates at 5V which can be supplied via the Vcc pin or through the USB port connection. If an external 7-12V power supply is used, the power should be input on the ‘RAW’ pin which feeds an on-board 5V regulator. It is not recommended to use input voltages greater than 12V as it will cause the on-board regulator to work harder and may cause it to overheat. There is a green power LED on the board and 2 red LEDs which show activity on the TX/RX lines. There is no on-board general purpose LED. Like all Arduino and compatible boards, it can be programmed using the Arduino IDE via the USB port. To program with the Arduino IDE, use board type: ‘Leonardo’. The board comes with 2 male header strips. These do not come soldered for maximum flexibility depending on how the module will be used. The headers can be optionally soldered onto the module if using with a breadboard. If it is desired to solder on the headers, it is easiest if the headers are first placed into a solderless breadboard to hold them aligned while they are being soldered. Our Evaluation Results: These are clone assemblies with good build quality. Because of the Leonardo architecture where the main processor is also the USB port, the PC may reassign (re-Enumerate) the COM port if the board is reset or between downloads or USB cable re-connections. If you experience issues with downloading, ensure that the current COM port is selected in the IDE. The COM port will generally identify the device as ‘Leonardo’. This feature can make the device a little more frustrating to use than other Arduinos until you get used to the quirk. I would not recommend the Pro Micro for a first Arduino as it is not quite as fool-proof as something like the Nano if you want something on the smaller side. As with any boards that use the Type-C USB connector, be sure to push/pull the USB cable straight in and out to avoid possible damage to the on-board connector. Pulling up on the cable can potentially lift the connector off the board. Technical Specifications Microcontroller ATmega32U4 Serial to USB Converter Built-in Native USB Operating Voltage 5V Input Voltage (recommended) 7-12V Digital I/O Pins 12 PWM I/O Pins (Shared with Digital I/O) 5 Analog Input Pins 9 DC Current per I/O Pin (recommended) 20mA Hardware Serial Ports 1 Flash Memory 32 KBytes SRAM 2.5 KBytes EEPROM 1 KBytes Clock Speed 16MHz Power Consumption Built-in LED None USB Connector Style Type-C Board Dimensions (PCB) 33x 18mm Board Dimensions (with connector overhang) 35 x 18mm Mfr China

From Makers Electronics's description

Arduino Pro Micro ATmega32U4-MU 5V/16MHz Module with Micro USB The Pro Micro is an Arduino compatible board based on the ATmega32U4 and the smallest member of the Arduino family. It is similar to the Arduino Micro, but it is even smaller. It is breadboard friendly and the small size allows you to place the Pro Micro into your breadboard rather than jumpering from the board over to a breadboard. The small size also makes them useful for embedding into a permanent project. Features : Microcontroller : ATmega32U4, providing robust processing power. Operating Voltage : 5V, suitable for most Arduino projects. Clock Speed : 16MHz, ensuring fast performance. Digital I/O Pins : 12, with 5 supporting PWM for precise control. Analog Input Pins : 9 channels with 10-bit ADC for accurate sensor readings. Flash Memory : 32KB (4KB used by bootloader), ample for complex sketches. SRAM : 2.5KB, supporting efficient data handling. EEPROM : 1KB, for persistent data storage. USB : Micro-USB port for programming and power, enhancing connectivity. Dimensions : 33mm x 18mm, perfect for compact designs. Arduino IDE Support : Compatible with version 1.0.1+, simplifying development. Power Protection : Includes PTC fuse and diode protection for safe operation. Specifications : Parameter Details Microcontroller ATmega32U4 Operating Voltage 5V Input Voltage (Recommended) 7-12V (via “RAW” pin) Input Voltage (Limits) 6-16V Digital I/O Pins 12 (5 with PWM capability) Analog Input Pins 9 (10-bit ADC) DC Current per I/O Pin 40mA Flash Memory 32KB (4KB used by bootloader) SRAM 2.5KB EEPROM 1KB Clock Speed 16MHz USB Micro-USB Dimensions 33mm x 18mm Maximum Current for Chip 200mA Applications : Custom USB Input Devices Small-Scale Robotics Wearable Electronics Data Logging Prototyping and Education Package Includes : 1 x Arduino Pro Micro ATmega32U4-MU 5V/16MHz Module with Micro USB 2 x Male Header Strips

From Makers Electronics's description

Arduino Pro Micro 5V/16MHz Atmega32U4-MU: Compact and Efficient Development Board with Micro USB Interface The Arduino Pro Micro Atmega32u4 is a small, breadboard-friendly microcontroller board. It has an operating voltage of 5V and a clock speed of 16 MHz, making it suitable for a wide range of applications. The ATmega32U4 microcontroller has 32KB of flash memory, 2.5KB of SRAM, and 1KB of EEPROM, and features built-in USB support, which eliminates the need for a separate USB-to-serial converter. The Pro Micro is commonly used for DIY electronics projects, hobbyist inventions, and educational purposes, and is ideal for projects that require a compact and low-cost microcontroller board. There is a voltage regulator on board which can accept a power supply of 6-9VDC (max. 10V). Make sure to connect the input voltage to the RAW pin and not VCC (5V). A pair of pin headers are included (require soldering). Features ATmega32U4-MU running at 5V/16MHz Supported under Arduino IDE v1.0.1 and above On-Board micro-USB connector for programming 9x 10-bit ADC pins 12x Digital I/O (5 are PWM capable) Rx and Tx Hardware Serial Connections Specifications Specification Details Microcontroller Atmega32U4-MU Operating Voltage 5V Clock Speed 16 MHz Digital I/O Pins 12 Pins (5 PWM capable) Analog Inputs 9 Pins UART (Serial) 1 (TX/RX) PWM Pins 5 Pins Flash Memory 32 kB SRAM 2.5 kB EEPROM 1 kB USB Interface Micro USB Power Input (via USB) 5V Power Input (Vin) 7-10V (external power supply) PINOUT Applications Ideal for creating compact embedded systems like sensors, wearable devices, and control systems. Perfect for rapid prototyping with minimal space and power requirements. Can be used to build custom keyboards, mice, or other USB devices, thanks to its USB capabilities. Used in IoT applications where a small, low-power board is required for communication and sensor data collection. Excellent for small robots or automated systems requiring precise control and small form factor. Package Contents 1x Arduino Pro Micro 5V/16MHz Atmega32U4-MU Board with Micro USB 2x 12-pin headers (require soldering) Datasheet Atmega32U4 Chip

From Makers Electronics's description

Arduino Pro Micro 5V/16MHz Atmega32U4-MU: Compact and Efficient Development Board with Type-C USB Interface The Arduino Pro Micro Atmega32u4 is a small, breadboard-friendly microcontroller board. It has an operating voltage of 5V and a clock speed of 16 MHz, making it suitable for a wide range of applications. The ATmega32U4 microcontroller has 32KB of flash memory, 2.5KB of SRAM, and 1KB of EEPROM, and features built-in USB support, which eliminates the need for a separate USB-to-serial converter. The Pro Micro is commonly used for DIY electronics projects, hobbyist inventions, and educational purposes, and is ideal for projects that require a compact and low-cost microcontroller board. There is a voltage regulator on board which can accept a power supply of 6-9VDC (max. 10V). Make sure to connect the input voltage to the RAW pin and not VCC (5V). A pair of pin headers are included (require soldering). Features ATmega32U4-MU running at 5V/16MHz Supported under Arduino IDE v1.0.1 and above On-Board Type-C USB connector for programming 9x 10-bit ADC pins 12x Digital I/O (5 are PWM capable) Rx and Tx Hardware Serial Connections Specifications Specification Details Microcontroller Atmega32U4-MU Operating Voltage 5V Clock Speed 16 MHz Digital I/O Pins 12 Pins (5 PWM capable) Analog Inputs 9 Pins UART (Serial) 1 (TX/RX) PWM Pins 5 Pins Flash Memory 32 kB SRAM 2.5 kB EEPROM 1 kB USB Interface Type-C USB Power Input (via USB) 5V Power Input (Vin) 7-10V (external power supply) PINOUT Applications Ideal for creating compact embedded systems like sensors, wearable devices, and control systems. Perfect for rapid prototyping with minimal space and power requirements. Can be used to build custom keyboards, mice, or other USB devices, thanks to its USB capabilities. Used in IoT applications where a small, low-power board is required for communication and sensor data collection. Excellent for small robots or automated systems requiring precise control and small form factor. Package Contents 1x Arduino Pro Micro 5V/16MHz Atmega32U4-MU Board with Type-C USB 2x 12-pin headers (require soldering) Datasheet Atmega32U4 Chip

From Ampere Electronics's description

Arduino Pro Micro – ATmega32U4 5V/16MHz This microcontroller development board has 4 channel 10 bit ADC, 5 PWM pins, 12 DIO, and a hardware serial connection Rx and Tx you are familiar with. Running on 16MHz and 5V, this board will remind you a lot of other compatible boards that you like. There is a voltage regulator on board, so it can accept up to 12V DC. If you are supplying an unstable power supply board, be sure to connect to the “RAW” not on the VCC pin. We have also added a PTC fuse and diode protection to the power circuit and to correct the RX and LED TX circuits. ATMEGA32U4 running in 5V / 16MHz Support IDE V1.0.1 Micro USB interface programming on the board Four 10-bit ADC pin 12 digital I / O (5 PWM capability) Rx and Tx hardware serial connection Package Includes: 1x Arduino Pro Micro Documents: Schematic Eagle Files Board Dimensions Hookup Guide Graphical Datasheet Datasheet ?(ATmega32U4) Firmware Note Arduino Addon Files Arduino Addon Files (IDE 1.5+) GitHub ?(Design Files) Related Products: Arduino Boards

From Makers Electronics's description

PRO Micro ー Miniature Arduino-compatible board based on the ATMega32u4 microcontroller. Its dimensions are 33×18 mm. At the same time, it has 12 GPIO pins, 5 of which support PWM, 4 analog ports, UART, SPI and I2C interfaces. For power and connection to a PC, a two-way Type-C port is used. The board can be powered both from the USB port and from an external power source with a voltage of 6 to 12V. In this case, the power is connected to the RAW pin. Characteristics: microcontroller ATMega32u4 Supply voltage 5 V Digital input/output pins 12 PWM channels 5 Analog input pins 4 DC current through input/output pins 40 mA Flash memory 32 KB (ATmega32u4) SRAM RAM 2.5 Kb Non-volatile memory EEPROM 1 Kb Clock frequency 16 MHz Length 35 mm Width 18 mm Package Includes: Pro Micro 5V/16Mhz 2 x Male Header Strips Key Features of PRO MICRO 5V/16MHZ: ATmega32U4 processor running at 16MHz Built-in serial to USB converter 32KB Flash memory 12 Digital I/O 5 PWM shared with the digital I/O 5V Operation Extremely small size