HKM-815891 Microcontroller Circuit Board with 14 Digital I/O Ports, 8 Analog Inputs, and PWM Support

Introducing the HKM-815891 Microcontroller Circuit Board, a versatile electronic building block designed for various projects and applications. This professional-grade circuit board features an impressive array of capabilities tailored for both beginners and advanced users.

With 14 digital input/output ports—including versatile options such as RX, TX, and pins D2 to D13—this board allows for easy interfacing with sensors, actuators, and other devices. It provides 8 analog input ports (A0 to A7) ensuring you can read varying voltage levels with precision. For projects requiring precise control, the HKM-815891 supports 6 PWM output ports located at D3, D5, D6, D9, D10, and D11, enabling you to manipulate the speed of motors or the brightness of lights with ease.

At its core, this circuit board utilizes the Atmel Atmega328P-AU microcontroller, providing reliable performance with a clock frequency of 16MHz. A reset button adds a layer of convenience, while the compact size of 33.3mm by 18.0mm makes it an ideal choice for tight spaces.

Powering the HKM-815891 is simple; it supports an external DC power supply ranging from 3.3V to 12V, as well as a 9V battery option, giving you flexibility in power management. The inclusion of a TTL level serial port transceiver (RX/TX) means you can easily connect and communicate with other devices in your projects.

Designed with mounting hole pin headers, it is straightforward to integrate into your own setup. Whether you are creating a prototype, building a hobby project, or developing an advanced electronic system, the HKM-815891 Microcontroller Circuit Board is a reliable and essential component to add to your toolkit.

Electronic building block template
The professional version of Mini Pro is a microcontroller circuit board. It has 14 digital input/output pins (6 of which can be used as PWM outputs), 8 analog inputs, a 16MHz resonator, a reset button, and mounting hole pin headers
Technical Parameters:

1. 14 digital input/output ports RX, TX, D2~D13,
2. 8 analog input ports A0~A7
3. 1 pair of TTL level serial port transceiver port RX/TX
4. 6 PWM ports, D3, D5, D6, D9, D10, D11
5. Using Atmel Atmega328P-AU microcontroller
6. Support serial download
7. Support external 3.3V~12V DC power supply
8. Support 9V battery power supply
9. Clock frequency 16MHz

10. Size: 33.3*18.0 (mm)