2 Channel PWM Pulse Frequency Adjustable Duty Cycle Square Wave Rectangular Wave Signal Generator Module

The 2 Channel PWM Pulse Frequency Adjustable Duty Cycle Square Wave Rectangular Wave Signal Generator Module is designed as a dual-channel PWM/Pulse generator capable of variable frequencies ranging from 1Hz to 150KHz and adjustable duty cycles from 1% to 100%. Users can manage the frequency and duty cycle through onboard switches or via a serial communication protocol. This module serves as an effective solution for driving stepper motors with variable frequency pulse inputs and controlling DC motors using adjustable PWM duty cycles.

Features:

• Two independent PWM channels with adjustable frequency and duty cycle.

• Extensive frequency range of 1Hz to 150KHz.

• Parameter adjustments possible through Serial protocol.

• Dimensions: 41mm x 28mm with a thickness of 1.6mm.

Specifications:

• Operating Voltage (VDC): 5 to 30.

• USB Type: Micro USB.

• Frequency Range: 1Hz to 150KHz.

• Frequency Precision: 0.02.

• Operating Temperature (°C): -30 to 60.

• Signal Load Capacity: Output current ranges from 8 to 30mA.

• Dimensions in mm (LxWxH): 44mm x 30mm x 11mm.

• Weight (g): 8.

Application Fields:

• Functions as a square wave generator for experimental development.

• Utilised for driving stepping motor drivers with square waves.

• Generates adjustable pulses for microcontrollers.

• Produces adjustable pulses for controlling related circuits (e.g., PWM for light speed adjustments).

Serial Port Control:

• Communication Standard: 9600 bps.

• Data Bit: 8.

• Stop Bit: 1.

• Verify Bit: None.

• Flow Control: None.

Setting PWM Frequency:

• “S1FXXXT”: set PWM1 frequency to XXX Hz (001~999).

• “S1FXX.XT”: set PWM1 frequency to XX.X KHz (00.1~99.9).

• “S1F:X.X.X.T”: set PWM1 frequency to XXX KHz (0.0.1~1.5.0).

• “S1”: PWM1.

• “S2”: PWM2.

• “F”: Frequency.

• “D”: Duty cycle.

• “T”: Stop sign bit.

Setting PWM Duty Cycle:

• “S1DXXXT”: set PWM1 duty cycle to XXX (001~100).

• “S2DXXXT”: set PWM2 duty cycle to XXX (001~100).

• Successful setting feedback: DOWN.

• Unsuccessful setting feedback: FALL.

Parameter Setting:

This module features a 3-channel key: Set, Up, Down.

1. By briefly pressing the SET key, users can toggle through four parameter values (FR1: PWM1 frequency; dU1: PWM1 duty cycle; FR2: PWM2 frequency; dU2: PWM2 duty cycle); the corresponding parameter name will flash before switching.

2. Directly press the UP or DOWN key to modify the current parameter value.

3. For the 2-channel PWM, three frequency values can be set; in the frequency display interface, long-pressing SET allows for cycling through the three frequency duty cycles, which are consistent (XXX: 1Hz~999Hz; XX.X: 0.1KHz~99.9KHz; X.X.X.: 1KHz~150KHz).

Package includes:

• 1 x 2 Channel PWM Generator Module.

Return Policy Overview

At ROBODIUM™, we want you to be completely satisfied with your purchase. You may return most items within 7 days of delivery for a full refund or exchange.

Return Window

• Standard Returns: 7 days from delivery date for any reason, including if you simply changed your mind.
• Defective/Damaged Items: 7 days from delivery date for items received damaged or defective.
• Manufacturing Defects (Warranty): 15 days from delivery for manufacturing defects, unless a different warranty period is specified on the product page.

What Can Be Returned

Most items sold on ROBODIUM™ can be returned within the return window, including:

• Items you no longer need or changed your mind about
• Products received in damaged condition
• Items with manufacturing defects
• Wrong items received (item mismatch)
• Missing components inside the package

Return Conditions

To be eligible for a return, items must be:

• In their original, unused condition
• In the original packaging with all accessories, manuals, and free gifts (if any)
• Accompanied by proof of purchase

Note: Products damaged due to misuse, modification, static discharge, soldering, or improper handling may not be eligible for return.

How to Initiate a Return

1. Contact us via email at support@robodium.com or call +91 8123109966
2. Provide your order number and reason for return
3. Submit photos/videos of the item (especially for damaged/defective products)
4. Our team will review and approve your return request within 1-2 business days

Return Pickup Process

We arrange the return pickup for you - hassle-free returns similar to major e-commerce platforms.

• Once your return is approved, we will coordinate pickup from your location.
• Pack the product securely in its original packaging.
• Include a copy of the order confirmation or packing list.
• Keep the package ready - our logistics partner will collect it at the scheduled time.

Return Shipping Costs

• Defective, damaged, or wrong items: ROBODIUM™ covers all return shipping costs. No charges to you.
• Change of mind returns: A flat return shipping fee of ₹100 will be deducted from your refund amount.

Refund Process

• Refund Method: Refunds are processed to your original payment method.
• Processing Time: 5-7 business days after we receive and inspect the returned item.
• Refund Amount: Full purchase price minus any applicable return shipping fees.
• Orders canceled before shipping receive a full refund (minus up to 5% payment gateway charges, if applicable).

Replacements

• Once the returned item is inspected and approved, we ship the replacement at no additional cost.
• Replacement items are dispatched within 2 business days of receiving your return.
• If replacement is unavailable, we provide a full refund.

Warranty Terms

All products include a minimum 15-day warranty against manufacturing defects unless otherwise specified on the product page.

Warranty does not cover: misuse, soldering damage, modifications, physical damage, or incorrect electrical connections.

Order Cancellations

• Orders in Pending or Payment Verification status can be canceled for a full refund.
• Contact us immediately at support@robodium.com to cancel before shipping.
• Once an order is shipped, it cannot be canceled but can be returned after delivery.

Customer Service Commitment

• Email Response Time: Within 24 hours on business days
• Phone Support: Monday-Saturday, 10:00 AM - 6:00 PM IST
• Return Request Review: 1-2 business days
• Issue Resolution: Within 48 hours of verification