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Circular rotary knob LCD smart control display
Home Products Rotary & Round Displays 1.6″ 400×400 Cortex-M3 UART Wi-Fi/BLE Rotary Knob Display
Round smart knob screen for coffee machine control
1.28″ 240×240 ESP32 UART Rotary Knob Display 26.00 $
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7 inch capacitive touch ESP32 HMI screen board
7.0″ 800×480 ESP32-S3 UART/USB Touch Display 29.90 $

1.6″ 400×400 Cortex-M3 UART Wi-Fi/BLE Rotary Knob Display

Sample Price: US$28.00

Model No.ND016HMK400400-A01
Display Size1.6 Inch
Resolution400×400 pixels
Display TypeTFT LCD
Luminance300 nits
Display InterfaceUART
ActionRotary, Press
Module ConfigurationRotary Knob + Cortex-M3
Contact an EngineerView DatasheetsRequest Samples
Model: ND016HMK400400-A01 Categories: ESP32 Displays, Rotary & Round Displays
  • Description
Description

Product Overview

NoseDisplay ND016HMK400400-A01 is a 1.6-inch 400×400 round TFT LCD smart display module with integrated rotary and press control for compact embedded HMI, appliances, audio controls and connected devices. ARM Cortex-M3, 96 MHz provides UI processing, while UART communication supports host integration. Wi-Fi / BLE / Bluetooth supports connected applications. The encoder provides 24 pulses and a mechanical push switch. Confirm UI development resources for the selected configuration. NoseDisplay supports OEM housing, interface and UI customization for project evaluation.

NoseDisplay ND016HMK400400-A01 combines a 1.6-inch 400×400 TFT LCD screen with rotary and press control, ARM Cortex-M3, 96 MHz, UART and Wi-Fi / BLE / Bluetooth. Housing, interface and UI options support OEM evaluation.

Technical Specifications

ParameterSpecification
ModelND016HMK400400-A01
Display Size1.6 Inch
Resolution400×400 pixels
Display TypeTFT LCD
Display ModeIPS TFT
TouchscreenNone
Outline DimensionsØ 59 mm
Active AreaØ 39.80 mm
Luminance300 nits
Available ColorsBlack / White / Gold
ParameterSpecification
MCU (IC)ARM Cortex-M3, 96 MHz
PlatformRTOS
Memory2M(RAM) + 16M(Flash)
Operating Current150 mA
WirelessWi-Fi / BLE / Bluetooth
Supply Voltage5 V
Display InterfaceUART
Weight125 ± 5 g
Operating Temperature-20°C ~ 70°C
Storage Temperature-30°C ~ 80°C

Mechanical Drawing & Interface Definition

Please refer to the model-specific TFT-LCD specification for mechanical drawings, dimensions, FPC connection details and pin definitions. Visit our Download Center for available datasheets, or contact an engineer to request documentation for your model.

ND016HMK400400-A01 1.6-inch rotary knob display mechanical drawing and interface definition

PIN Description

Pin No.SymbolDescription
1TX1UART1 transmit
2RX1UART1 receive
3TX2UART2 transmit
4RX2UART2 receive
5GNDGround
6VCCPower supply, 5 V

Rotary Knob Features & Design Options

An integrated rotary knob display combines a circular screen, tactile controls and wireless connectivity for compact HMI and connected products. Explore the supplied module features, application scenarios and project-specific design options below.

Two rotary knob displays and exploded structure showing FPC cable, ABS base, control board, touch screen and metal casing

Integrated Display & Control

Supplied configuration: 1.6-inch TFT LCD display + ARM Cortex-M3, 96 MHz control board + rotary knob and housing. Rotary and press input; no touch in this version.

  • Display & input: 400×400 circular color screen, 300 nits, rotary navigation and mechanical press confirmation.
  • Controller & wireless: ARM Cortex-M3, 96 MHz, Wi-Fi / BLE / Bluetooth connectivity.
  • Host communication: UART for integration with a host MCU or appropriately matched control system.
  • UI development: Confirm the development environment and UI resources for the selected configuration.
  • Compact OEM integration: Ø 59 mm outline, with housing, appearance and interface options evaluated for each project.

Integration Advantages

Combining the display, controller and tactile input in one module simplifies component integration. Onboard wireless connectivity supports connected controls, while familiar development tools help teams evaluate and adapt the UI. Housing and interface customization can be reviewed alongside the target product design.

Rotary knob interaction examples showing rotation, mechanical pressing and an optional touch variant

Rotary & Press Interaction

Rotate to browse menus or adjust volume, temperature and dimming levels; press to confirm a selection. Tactile input combines with on-screen status for an intuitive control interface.

The image illustrates interaction options across the range. Touch is an optional variant; this ND016HMK400400-A01 module is supplied without touch.

Optional sealed rotary knob housing, hidden display, shell finishes and bottom lighting design examples

Protection & Appearance Options

Review sealed housing, all-black or mirror-like display appearance, shell texture, material and color, plus optional bottom lighting to match your product design.

The illustrated IPX7 capability applies to a separate waterproof variant. Sealing, touch, lighting and protection rating must be confirmed for the selected configuration.

Round rotary knob display application concepts for smart home panels, ovens, air fryers, washing machines and audio controls

Application Scenarios

Suitable for smart home controls, audio volume interfaces, ovens and air-conditioner panels, smart lighting, industrial parameter controls and compact IoT devices.

Match the UI, host connection, mounting and enclosure to the application. The illustrated products are integration examples for OEM evaluation.

Sample Ordering & Delivery

Samples are available for engineering evaluation. Shipping excludes import duties and taxes. Estimated delivery times are in calendar days, including 4 days of preparation. Final terms are confirmed before payment.

Order Samples

Sample MOQ

2 pcs per model

Minimum order quantity.

Preparation Time

4 days

After order and payment confirmation.

Standard Delivery

US$29$29

Shipping Fee

Transit Time: ~11 days

Total Time: ~15 days

Express Delivery

US$69$69

Shipping Fee

Transit Time: ~4 days

Total Time: ~8 days

Order Samples

Typical Applications & Customization

NoseDisplay supports round TFT LCD and rotary knob display projects for smart controls, appliances, instruments, robotics and embedded IoT devices. OEM engineering support covers display selection, circular UI layouts, mechanical design, touch and cover lenses, FPC connections and driver board integration.

Explore round LCD and rotary knob display applications, with OEM support for display selection, circular UI layouts, housings, cover lenses and driver boards.

BCDTEK Industrial Park

Typical Applications

Illustrative applications across our round display and rotary knob range. Display size, touch, enclosure and driver hardware are selected for each project.

Round rotary display used for smart thermostat temperature control

Smart Home Controls

Round thermostat displays for HVAC settings, room temperature and smart home control.

Round LCD display integrated into a smart blender control panel

Smart Appliance Controls

Round LCD interfaces for blender modes, kitchen appliances and operating status.

Circular rotary knob display showing an audio volume interface

Rotary Control Interfaces

Circular knob displays for audio volume adjustment, menu navigation and parameter selection.

Motorcycle dashboard with a circular digital instrument display

Motorcycle Dashboards

Circular instrument displays for speed, vehicle status and dashboard information.

Humanoid robot with two circular display eyes and a display structure illustration

Robot Eye Displays

Miniature circular screens for animated robot eyes, expressions and interactive devices.

Lawn mower with a circular display showing equipment status

Robotic Lawn Mowers

Round equipment displays for mowing modes, battery status and local controls.

Round display concept showing monitoring values on an instrument

Monitoring Instruments

Circular readouts for sensor values, measurement status and equipment monitoring.

Two desktop companion robot concepts with circular face displays showing expressive graphics

AI Desktop Companions

Round displays for animated expressions, assistant status and interaction in AI companion devices.

Customization Options

Engineering options are evaluated according to the selected module and OEM project requirements.

Round display temperature and settings interfaces with firmware development context

Display & UI Options

Review round display size, resolution, brightness and circular UI layouts for your OEM application.

Rotary knob display housing concept with mechanical dimensions

Knob & Housing Design

Evaluate knob dimensions, enclosure materials, mounting details and mechanical fit for your product.

Circular NoseDisplay screen with an interface adapter and microcontroller board

PCB & Interface Integration

Review FPC connections, adapter PCBs, driver boards and host interfaces for the selected display.

Dual round LCD robot eye prototype being tested with an Arduino board and bench instruments

Prototype & Firmware Evaluation

Evaluate display driving, animation firmware and controller compatibility during prototype development.

Quality & Compliance Support

We provide quality and compliance documentation for qualified OEM projects
based on the selected module, BOM and manufacturing configuration.

RoHS

EU RoHS compliant materials and process control

REACH

Support REACH regulation compliance

Reliability Testing

Environmental & mechanical reliability testing reports

ESD Control

ESD protection design and testing capability

Quality System

Manufactured under a certified quality management system

View Quality DocumentsView Manufacturing & Quality

Documentation availability and scope are confirmed according to the selected module, BOM, manufacturing source and project requirements.

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