Keyestudio Nano KS0173 (Compatible)

AED 40.95



A compact, comprehensive, and breadboard-friendly board based on the ATmega328P-AU is the keyestudio Nano CH340. The USB-to-serial port chip utilized in keyestudio Nano is CH340G, all operating procedures are identical to any Arduino Nano board. It contains 8 analog inputs, a 16 MHz crystal oscillator, 14 digital input/output pins, 6 of which can be used as PWM outputs, a small USB connector, an ICSP header, and a reset button. The Mini-B USB port or female headers Vin/GND can be used to power the KeyeStudio Nano (DC 7-12V).



Microcontroller ATmega328P-AU
Operating Voltage 5V
Input Voltage (recommended) DC7-12V
Digital I/O Pins 14 (D0-D13) (of which 6 provide PWM output)
PWM Digital I/O Pins 6 (D3, D5, D6, D9, D10, D11)
Analog Input Pins 8 (A0-A7)
DC Current per I/O Pin 40 mA
Flash Memory 32 KB of which 2 KB used by the bootloader
Clock Speed 16 MHz
PCB Dimensions 18mm x 45mm
Weight 7g


Pinout of the Nano:

Ks0173 pinout.jpg

1 ICSP Header ICSP (In-Circuit Serial Programming) Header

ICSP is the AVR, a micro-programming header consisting of MOSI, MISO, SCK, RESET, VCC, and GND. It is often called the SPI (serial peripheral interface) and can be considered an "extension" of output. In fact, slave the output devices under the SPI bus host.
When connecting to the PC, program the firmware to ATMEGA328P-AU.

2 LED indicator(RX) Onboard you can find the label: RX(receive )

When the control board communicates via serial port, receives the message, RX led flashes.

3 LED indicator(TX) Onboard you can find the label: TX (transmit)

When the control board communicates via serial port, sends the message, TX led flashes.

4 LED indicator(POW) Power up the control board, LED on, otherwise LED off.
5 LED indicator(L) There is a built-in LED driven by digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off.
6 RX0(D0)TX1(D1)D2-D13 It has 14 digital input/output pins D0-D13 (of which 6 can be used as PWM outputs). These pins can be configured as digital input pins to read the logic value (0 or 1). Or used as a digital output pin to drive different modules like LED, Relay, etc.
7 RST Reset pin: connect external button. The function is the same as the RESET button.
8 MEGA 328P Each board has its own microcontroller. You can regard it as the brain of your board.

Microcontrollers are usually from ATMEL. Before you load a new program on the Arduino IDE, you must know what IC is on your board. This information can be checked at the top surface of the IC.
The board’s microcontroller is ATMEGA328P-AU.
More info. see the datasheet

9 MINI USB The board can be powered via a Mini-B USB connection. Also, upload the program to the oard via USB port.
10 3V3 pin provides 3.3V voltage output
11 REF Reference external voltage (0-5 volts) for the analog input pins. Used with analogReference().
12 A0-A7 The Nano has 8 Analog Pins, labeled A0 through A7.
13 5V pin Provides 5V voltage output
14 GND Ground pin
15 VIN Input an external voltage DC7-12V to power the board.
16 Reset Button Used to reset the control board
17 ch340G USB-to-serial port chip, converting the USB signal into Serial port signal.
18 AMS1117 Convert the external voltage input DC7-12V into DC5V, then transfer it to the processor and other elements.


Specialized Functions of Some Pins

  • Serial communication: 0 (RX) and 1 (TX). Used to receive (RX) and transmit (TX) TTL serial data.
  • PWM (Pulse-Width Modulation): D3, D5, D6, D9, D10, D11
  • External Interrupts: D2 (interrupt 0) and D3 (interrupt 1). These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. See the attachInterrupt() function for details.
  • SPI communication: D10 (SS), D11 (MOSI), D12 (MISO), D13 (SCK).
  • IIC communication: A4 (SDA); A5(SCL)

Package Includes:

  • 1 x Arduino Nano Board 
  • 1 x USB Cable