SPECIFICATIONS

Brand Name: NullLab

Choice: yes

Condition: New

High-concerned chemical: none

Origin: Mainland China

Package: SMD

Supply Voltage: 6-16V

Type: Logic ICs

is_customized: Yes

Overview

ADC button module is an electronic component that uses analog-to-digital conversion technology (ADC) to achieve button detection. The core principle is to distinguish different buttons through resistor voltage division: each button is connected to a specific resistor, which generates a unique voltage value when pressed. The ADC chip converts the analog voltage into a digital signal, which is recognized by the microcontroller for the corresponding button. Compared to traditional matrix keyboards, it significantly saves IO port resources, only requires a single ADC channel to support 5 keys, and has a simple circuit structure and lower cost. The main advantages include simplified wiring, strong anti-interference ability (which can be eliminated by software filtering), and flexible expansion, but attention should be paid to resistance accuracy and power supply stability to avoid misjudgment. Typical applications include scenarios with limited IO resources such as smart home panels, industrial controllers, and portable devices.

schematic diagram

Module parameters

• Supply voltage: 3~5V

• Connection method: PH2.0-3pin cable

• Number of module buttons: 5

• Size: 38.4x22.4mm

• Installation method: M4 screws compatible with Lego socket for fixation

Size chart