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M5Stack Microphone Unit (LM393) PCB front
M5Stack Microphone Unit (LM393) PCB back
M5Stack Microphone Unit (LM393) PCB front
M5Stack Microphone Unit (LM393) PCB back

M5Stack Microphone Unit (LM393)

SKU: M5-U096
Sale price 6,44 €
incl. VAT
excl. VAT
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M5Stack Microphone Unit (LM393)

M5Stack Microphone Unit (LM393)

6,44 €

Description

M5Stack Microphone Unit (LM393), also known as Unit MIC, is a compact sound sensor module for M5Stack projects. It combines an omnidirectional electret microphone with a MAX4466 microphone preamplifier to help suppress power-supply noise and common-mode noise while providing high-fidelity sound output in noisy environments. The module supports both analog and digital signal output, making it useful for audio sampling, sound-to-electricity conversion, and sound-activated control.

The M5Stack Microphone Unit (LM393) also integrates an LM393 dual voltage comparator. By adjusting the onboard 10K potentiometer, users can set the comparison-voltage threshold for digital trigger output while still using the analog signal for waveform or sound-level processing. This makes the M5Stack Microphone Unit (LM393) suitable for prototyping audio interaction, voice switch projects, and compact IoT sound detection systems.

Features

  • Sound sampling and audio recording: captures environmental sound for audio input and detection projects.
  • MAX4466 preamplifier: improves microphone signal output and helps reduce power-supply and common-mode noise.
  • Omnidirectional microphone: provides 52dB sensitivity for broad sound pickup around the module.
  • Analog and digital outputs: supports waveform-level processing and threshold-based trigger detection.
  • LM393 threshold control: includes a voltage comparator and adjustable potentiometer for digital trigger tuning.
  • M5Stack development workflow: supports Arduino and UIFlow development with the HY2.0-4P interface.
  • Compact mounting: includes 2 LEGO-compatible holes for quick integration into prototypes and fixtures.

Specifications

Microphone sensitivity / signal-to-noise ratio 52dB / 40dB
Output signal Analog / Digital
Input voltage 5V
Product size 32.0 x 24.0 x 8.0mm
Product weight 4.6g
Package size 138.0 x 93.0 x 9.0mm
Gross weight 10.0g

Applications

  • Sound-to-electricity conversion experiments
  • Sound-activated switches and trigger input
  • Audio sampling and sound-level detection
  • Interactive installations and responsive prototypes
  • Smart home or IoT sound monitoring projects

Product List

1 Unit MIC
1 HY2.0-4P Grove cable (20cm)

Other Content

PinMap

HY2.0-4P wire color Black Red Yellow White
PORT.B function GND 5V Digital Output Analog Output

The M5Stack Microphone Unit (LM393) is designed for PORT.B connection and can be used with Arduino or UIFlow examples for microphone AD-value sampling and threshold-based sound detection.

Resources

FAQ

What is the M5Stack Microphone Unit (LM393) used for?

It is used for audio sampling, sound-to-electricity conversion, and sound-activated switch projects where a compact analog and digital sound sensor is needed.

What is the difference between the analog and digital outputs?

The analog output can be used for sound-level or waveform processing, while the digital output is controlled by the adjustable LM393 threshold circuit.

Which development platforms are supported?

The module is designed for M5Stack workflows and supports Arduino and UIFlow development through the HY2.0-4P interface.

1. General Shipping Information

  • We provide reliable shipping services with a tracking number for each order.
  • Shipping addresses must be entered in English and should not contain special symbols, so that the courier system can recognize your location correctly.
  • Please make sure your shipping address is accurate before placing your order. We ship strictly according to the address provided at checkout.
  • In-stock orders are usually dispatched within 1 business day after order confirmation.
  • Estimated delivery times refer to the period after dispatch and do not include order processing time, weekends, public holidays, customs inspection, or force majeure delays.
  • If you need to cancel or modify your order, please contact us before the order is marked as “Shipped”. Once shipped, the order cannot be canceled or changed.

🚀 Need Faster Shipping?

If you require expedited shipping, please contact our customer support team at info@upenelab.com for a customized quote based on your destination.

2. Shipping Rates & Options

Shipping rates are calculated based on order value, destination, and available shipping methods. The final available options will be displayed at checkout.

2.1 Germany Domestic Shipping

Shipping Method Order Value Cost Est. Delivery
Deutsche Post €0.00 - €50.00 €4.95 2-4 Business Days
Deutsche Post Over €50.00 Free 2-4 Business Days
DHL Paket
(Faster Delivery)
€0.00 - €50.00 €6.95 1-3 Business Days
DHL Paket
(Faster Delivery)
€50.00 - €100.00 €2.00 1-3 Business Days
DHL Paket
(Faster Delivery)
Over €100.00 Free 1-3 Business Days

2.2 Selected EU Countries / Regions

Available EU shipping destinations are shown at checkout based on your shipping address. For orders shipped to selected EU countries or regions outside Germany, we use FedEx Regional Economy.

Shipping Method Order Value Cost Est. Delivery
FedEx Regional Economy €0.00 - €100.00 €7.95 3-5 Business Days
FedEx Regional Economy Over €100.00 Free 3-5 Business Days

EU orders may be fulfilled from our Munich warehouse or, when applicable, from our Shenzhen warehouse depending on inventory availability. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.

2.3 United States

Region Shipping Method Order Value Cost Est. Delivery
Continental U.S.
(50 States)
USPS Ground Advantage €0.00 - €45.00 €4.95 3-7 Business Days
USPS Ground Advantage Over €45.00 Free 3-7 Business Days
USPS Priority Mail €0.00 - €45.00 €16.95 1-4 Business Days
USPS Priority Mail Over €45.00 €14.95 1-4 Business Days
Non-Continental U.S.
(AK, HI, PR, etc.)
USPS Ground Advantage €0.00 - €60.00 €6.95 5-9 Business Days
USPS Ground Advantage Over €60.00 Free 5-9 Business Days

Non-Continental U.S. regions include Alaska, American Samoa, Guam, Hawaii, the Marshall Islands, the Northern Mariana Islands, Palau, Puerto Rico, the U.S. Virgin Islands, and U.S. Armed Forces addresses.

2.4 International Destinations Outside the EU

For selected international destinations outside the EU, including Switzerland, the United Kingdom, and Norway, shipping rates are as follows:

Order Amount Shipping Cost
€0.00 - €300.00 €19.95
Over €300.00 Free

For non-EU destinations, import duties, taxes, and customs fees may be charged by the destination country and are the responsibility of the recipient.

3. Warehouses & Fulfillment

Our products may be stored in our Munich, Arlington, and Shenzhen warehouses. The actual shipping warehouse depends on product availability and destination.

3.1 Munich Warehouse

For products stored in our Munich warehouse, we use Deutsche Post or DHL Paket for domestic deliveries within Germany. For selected EU destinations outside Germany, we use FedEx Regional Economy.

3.2 Arlington Warehouse

For products stored in our Arlington warehouse, we use USPS or UPS for deliveries within the United States.

3.3 Shenzhen Warehouse

For pre-order items or products fulfilled directly from our Shenzhen warehouse, we arrange reliable international shipping based on destination and inventory status. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.

4. Inventory, Pre-orders & Split Shipments

  • Inventory Status: Please check the product page for real-time stock information. If an item is out of stock in our local warehouses, it may be marked as “Pre-order”.
  • Pre-order Fulfillment: Pre-order items may be shipped directly from Shenzhen or restocked to a local warehouse first before final delivery.
  • Split Shipments: If your order contains both in-stock and pre-order items, we may ship them separately. No additional shipping fee will be charged for split shipments caused by our fulfillment arrangement.

5. Customs, Taxes & Delivery Issues

5.1 Customs and Taxes

For EU Member States:
Whether shipped from Germany or China, OpenELAB covers applicable import duties and taxes under DDP service where required. Customers in EU member states should not be charged additional import duties or VAT upon delivery.

Important Notice for Non-EU Countries:
For destinations outside the European Union, such as Switzerland, Norway, and the United Kingdom, import duties, taxes, and customs fees may be charged by local authorities upon delivery. These fees are the responsibility of the recipient.

5.2 Damaged, Delayed, or Lost Parcels

Please inspect your parcel upon delivery where possible. If you notice visible damage, please report it to the courier and contact us as soon as possible. This does not affect your statutory consumer rights.

If your parcel is delayed, lost, returned to sender, or the tracking information has not updated for an unusual period of time, please contact us at info@upenelab.com. We will assist you in checking the shipment status with the courier.

5.3 Incorrect Address or Failed Delivery

If a parcel cannot be delivered due to an incorrect or incomplete address provided by the customer, refusal of delivery, or failure to collect the parcel, additional shipping or return costs may apply.

6. VAT

For orders within the EU, VAT is collected at checkout according to the applicable destination rules. No additional VAT should be collected upon delivery for EU member state orders covered under our DDP shipping arrangement.

Customer Reviews

Based on 3 reviews
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67%
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B
Blake Cooper
M5Stack Microphone Unit (LM393): solid performance

The M5Stack Microphone Unit (LM393) arrived in good condition and fitted neatly into my existing setup. It meets my needs with only minor room for improvement in the setup process.

L
Logan Bailey
M5Stack Microphone Unit (LM393): good overall experience

I added M5Stack Microphone Unit (LM393) to a recent project and found the initial setup straightforward. It performs well although a few extra setup notes would improve the experience.

H
Harper Evans
M5Stack Microphone Unit (LM393): reliable daily performance

After working with M5Stack Microphone Unit (LM393) for a while the overall experience felt stable and predictable. The unit feels well made and has performed consistently in normal use.