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Maker-Uno Operation Specification

中文版 English

Maker_Uno

Product Brief Introduction

​ Maker-Uno is a representative product for creator based on Arduino Uno R3,Features and pins are fully compatible with traditional Arduino Uno motherboards,Maximum driving current 2A of onboard 2-way motor drive chip,All I/O ports are drawn with Pin Header,The serial port chip is CH340G。

Product Parameter

function Arduino Uno Maker-Uno
microcontroller ATmega328 ATmega328
Serial chip Atmega16u2 CH340G
input voltage 7-12 V 7-16V
working voltage (current output) 5V(500mA) 5V(1000mA)
3.3V maximum current output 150mA 500mA
basic frequency External crystal oscillator 16M External crystal oscillator 16M
input voltage 7-12 V 7-16V
Flash 32K(Bootloader occupy 0.5k) 32K(Bootloader occupy 0.5k)
SRAM 2K 2K
ERROM 1K 1K
Motor drive chip none TC78H660FTG
IO interface Female Header Pin Header+Female Header
size/weight 68.6 x 53.4 mm / 25g 68.6 x 53.4 mm / 25g
bootloader download mode SPI SPI

Pin Specification

Maker_Uno_CalloutDrawing

Motor Function Description

​ Motor drive chip is TC78H660FTG,The maximum driving current is 2A.Only 2 PWM channels and 2 ordinary io channels are needed to drive 2-way motor,Reduce the occupation of PWM port,Can not drive high-power motor,Only conventional TT motor and building block motor can be driven.

Maker_Uno_Motor

DIR1:Control the direction of M1 motor DIR2:Control the direction of M2 motor PWM1:Control the speed of M1 motor PWM2:Control the speed of M2 motor

DIR1(D4) PWM1(D5) DIR2(D7) PWM2(D6) OUT1+ OUT1- OUT2+ OUT2- Mode
H H H L M1 foreward
L H L H M1 reversal
H H H L M2 foreward
L H L H M2 reversal
L L L L L L M1,M2 stop

Note: L :low level    H:high level    —:none

Arduino Motor Test Case

#define DIR1 4  // define direction 4 port
#define PWM1 5  // define pwm1 5 port
#define DIR2 7  // define direction 7 port
#define PWM2 6  // define pwm2 6 port

void setup() {
  Serial.begin(9600);
  pinMode(DIR1, OUTPUT);
  pinMode(PWM1, OUTPUT);
  pinMode(DIR2, OUTPUT);
  pinMode(PWM2, OUTPUT);
}

void loop() {
  // forward speed 255
  Serial.println("M1,M2 Forward");
  digitalWrite(DIR1, HIGH);
  digitalWrite(PWM1, 255);
  digitalWrite(DIR2, HIGH);
  digitalWrite(PWM2, 255);
  delay(2000);
  // reversal speed 255
  Serial.println("M1,M2 Reversal");
  digitalWrite(DIR1, LOW);
  digitalWrite(PWM1, 255);
  digitalWrite(DIR2, LOW);
  digitalWrite(PWM2, 255);
  delay(2000);
  // Stop speed 255
  Serial.println("M1,M2 Stop");
  digitalWrite(DIR1, LOW);
  digitalWrite(PWM1, LOW);
  digitalWrite(DIR2, LOW);
  digitalWrite(PWM2, LOW);
  delay(2000);
}

Click to download the motor test program

Indicator Description

  • ON symbol : The red indicator indicates the power indicator which will be steady on after the power supply.
  • L symbol :The yellow indicator indicates the BootLoader indicator,When connected to the computer via USB, the LED light will blink quickly when the port recognizes the board.
  • RX symbol :The LED indicator is the serial port receiving indicator,When the serial port receives data, the LED light will blink.
  • TX symbol :The LED indicator is the serial port sending indicator,When the serial port sends data, the LED light will blink.

CH340G Driver Installation

CH340G Driver download link

FAQ:

  1. Which motors can the board drive?

Reply:Support Drive TT plastic motor and building block motor, do not support to drive
high-power motor,The maximum driving current of motor drive IC is 2A.

  1. Why is the motor not working?

Reply:Check whether the external power supply is connected first,if not, connect the external power supply.If the external power supply is connected, check whether the program is successfully uploaded.

  1. Power supply mode?

Reply:3.5mm DC head power supply,The DC power supply range is 6-16V.

  1. How to confirm whether bootloader is lost?

Reply:After pressing the reset button,if the 'L' indicator blinks for three consecutive times, the bootloader is not lost,

​ if the 'L' indicator is not blinking,the bootloader is lost that which need to be downloaded.

Contact us

Technology + cooperation:TEL: null-lab(Wechat number)