LM358 100× Gain Weak Signal Amplifier Module — Precision Signal Boosting for Arduino & Sensors

Strengthen even the faintest sensor inputs with the LM358 100× Gain Signal Amplifier Module, designed for makers, students, and engineers who need reliable analog signal amplification. This compact op-amp module delivers clean, adjustable amplification—perfect for Arduino, ESP32, Raspberry Pi, and other microcontroller projects.

Powered by an LM358 dual op-amp IC, this module amplifies weak, noisy, or low-voltage sensor outputs by up to 100 times, making it ideal for vibration sensors, microphones, photodiodes, resistive sensors, and low-level analog signals.

Whether you’re building scientific instruments, DIY electronics, or prototyping embedded hardware, this module provides stable, high-accuracy amplification in a tiny footprint.

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✨ Key Features

🔍 LM358 Dual Op-Amp

Reliable, low-noise analog amplification widely used in industrial and hobby electronics.

🔊 100× Fixed High Gain

Boost extremely weak signals into clean, usable analog outputs for microcontrollers.

🎚️ Adjustable Magnification

A built-in 10K trim potentiometer allows you to fine-tune the gain to suit your application.

🔌 Wide Power Range: 5–12V

Compatible with:

• Arduino 5V

• ESP32/ESP8266 5V or 3.3V systems (with appropriate wiring)

• 12V industrial control projects

📢 Onboard Power Indicator LED

Instant visual confirmation that the module is powered correctly.

🔗 Easy Input/Output Access

LM358 signal pins are broken out clearly for simple wiring.

📏 Compact Size

Only 32.7 × 13.3 mm — ideal for embedded or space-constrained projects.

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📐 Specifications

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🔧 Applications

Perfect for amplifying small analog signals, including:

• Weak sensor outputs

• Microphone preamps

• Vibration or shock sensors

• Photodiode/phototransistor readings

• Resistive sensor amplification

• Analog signal conditioning

• Small scientific instruments

• Arduino ADC boost circuits

If your analog readings are too low, noisy, or barely detectable, this module boosts them into a stable, readable range.

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📦 Package Includes

• 1 × LM358 100× Gain Signal Amplifier Module (5–12V)
  Perfect for Arduino, ESP32, Raspberry Pi, STM32, and other microcontroller platforms.