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CONTENTS

ATOM PWM

SKU:K065

Description

The ATOM PWM is a single-channel PWM regulate DC Driver with built-in MOSFET load capacity up to 12V@100W, suitable for high-power DC motor PWM speed control and industrial heating wire control applications. Using ATOM LITE as the core controller (built-in ESP32), it has a wide PWM dynamic adjustment range (e.g., frequency of 5 kHz, duty cycle adjustment range 0-100%, resolution up to 13bit), and combined with the built-in WIFI function, it can also easily achieve remote control. Supports UIFlow graphical programming for easy configuration of signal output and function expansion.

Product Features

  • Single channel low latency PWM signal output
  • High power MOSFET, output capacity 12V@100W
  • Reserved 1xGROVE expansion interface
  • Built-in DC-DC (12V->5V) conversion circuit
  • Easy installation, simple operation
  • All-in-one design with protective cover
  • Development platform: Arduino/UIFlow

Included

  • 1x ATOM PWM
  • 1x ATOM LITE
  • 1x M2 Hex Wrench
  • 1x M2*8 cup head Machine screw
  • 1x 3.96-4P terminal
  • 1x TYPE-C USB data cable (20cm)

Applications

  • DC motor control
  • Light control
  • Heater control
  • DC Load

Specifications

Specification Parameter
Driver Chip EG27324
MOSFET FDD8447L
Maximum Output Power 100W
Input Voltage Range DC 12V-24V
Number of Drive Channels 1
Net Weight 28.9g
Gross Weight 37.3g
Product Dimensions 24 * 48 * 18mm
Package Size 54 * 54 * 20mm

Common Frequency and Resolution

LEDC Clock Source LEDC Output (PWM) Frequency Highest Resolution
APB_CLK (80 MHz) 1 kHz 1/65536 (16 bit)
APB_CLK (80 MHz) 5 kHz 1/8192 (13 bit)
APB_CLK (80 MHz) 10 kHz 1/4096 (12 bit)
RTC8M_CLK (8 MHz) 1 kHz 1/4096 (12 bit)
RTC8M_CLK (8 MHz) 8 kHz 1/512 (9 bit)
REF_TICK (1 MHz) 1 kHz 1/512 (9 bit)

Schematic

Pin Mapping

ATOM G22
EG27324 INA

Example

UIFlow

Arduino

#include <Arduino.h>

#define SIGNAL 22

int freq = 10000;
int ledChannel1 = 0;
int resolution = 10;

void setup() {
  ledcSetup(ledChannel1, freq, resolution);
  ledcAttachPin(SIGNAL, ledChannel1);
}

void loop() {

    for(int i=0; i < 500; i++){
      ledcWrite(ledChannel1, i);
      delay(2);      
    }

    for(int i=500; i > 0; i--){
      ledcWrite(ledChannel1, i);
      delay(2);      
    }
}

Video