ELECROW

ELECROW 2.1" ESP32 Rotary Display 480x480 HMI IPS Round Knob Touch Display

Name: ELECROW 2.1" ESP32 Rotary Display 480x480 HMI IPS Round Knob Touch Display
Brand: ELECROW
SKU: B0G3TZGRC4
Price: 52.99 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-06

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$52.99

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View Current Price on Amazon → Compare to similar single board computers

*Price sourced from Amazon.com. Last updated 2026-08-22. Price and availability subject to change.

Bottom line: The ELECROW 2.1" ESP32 Rotary Display 480x480 HMI IPS Round Knob Touch Display is a niche pick — read recent reviews before buying in the single board computers category, priced around $52.99. Compare close alternatives before committing.

SpecPicks Verdict

SpecPicks scored ELECROW 2.1" ESP32 Rotary Display 480x480 HMI IPS Round Knob Touch… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the single board computers category. ELECROW's single board computers lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.

Common buyer scenarios for single board computers of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ Backed by ELECROW's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

Rotary Knob & Capacitive Touch Interaction: This 2.1 inch rotary screen supports both capacitive touch and rotary knob input. The knob supports clockwise rotation, counterclockwise rotation, and full press actions, allowing intuitive control for volume, brightness, menus, and parameters
High-Performance ESP32-S3 Dual-Core Controller: Powered by a 32-bit dual-core ESP32-S3 chip with up to 240MHz clock speed, this ESP32 display delivers reliable performance for complex UI interfaces, data processing, and real-time interaction
Wireless Connectivity for IoT Applications: The knob touch display supports 2.4G WiFi and BLE low-power Bluetooth, enabling reliable wireless communication, remote control, and data exchange for IoT devices, smart home systems, and industrial control projects
Multiple Expansion Interfaces for Development: The ESP32 rotary display is equipped with a 5V charging interface for power supply and firmware programming, and provides UART, I2C, and FPC expansion interfaces to meet diverse embedded development needs
Ideal for Makers, Education & Product Development: Well-suited for DIY creators, open-source hardware enthusiasts, educators, and IoT manufacturers looking to accelerate prototyping, UI development, and customized control panel design

Full Specifications

Brand	ELECROW
Weight	2.4g
CPU Speed	240 MHz
Model Name	DHE03921D
Unit Count	1 Count
Connectivity	Bluetooth, WiFi, 2.4GHz
Model Number	DHE03921D
Built-In Media	1x 2.1 inch ESP32 Rotary Display, 1x 4pin Dupont Cable, 1x 50 cm MX1.25 to USB Cable
Connection Type	Wireless
Mfr Part Number	DHE03921D
Number of Items	1
Number of Packs	1
Processor Brand	Espressif
Processor Count	2
Processor Speed	240 MHz
Total Usb Ports	1
Compatible Devices	Arduino IDE, LVGL library
Included Components	1x 2.1 inch ESP32 Rotary Display, 1x 4pin Dupont Cable, 1x 50 cm MX1.25 to USB Cable
Warranty Description	1 Year Manufacturer Warranty
RAM Memory Technology	LPDDR2

Ready to buy?

ELECROW 2.1" ESP32 Rotary Display 480x480 HMI IPS Round Knob Touch Display is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-08-22. Price and availability subject to change.