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

Datasheet

Pin Mapping

ATOM	G22
EG27324	INA

Example

UIFlow

View UIFlow-PWM control documentation

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);      
    }
}