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October 8, 2023October 7, 2023

M5Dial – An ESP32-S3 smart rotary knob with a touchscreen display

M5Stack M5Dial is a WiFi and Bluetooth-connected smart rotary knob with a round 1.28-inch touchscreen TFT display powered by an ESP32-S3 board, more precisely, the M5Stamp S3 IoT module. The user-programmable device comes with a rotary encoder recording the position and direction of the knob, an RFID module, an RTC, a buzzer, and under-screen buttons, as well as two Grove connectors for expansion enabling all sorts of projects. M5Dial specifications: Wireless MCU module – M5Stack M5Stamp S3 with SoC – Espressif Systems ESP32-S3FN8 dual-core 32-bit Xtensa LX7 microcontroller with AI vector instructions up to 240MHz, RISC-V ULP co-processor, 512KB SRAM, 2.4GHz WiFi 4 (802.11b/g/n), Bluetooth 5.0 BLE + Mesh, 8MB flash 2.4GHz 3D antenna USB – 1x USB Type-C port Expansion connectors for I/Os such as SPI, I2C, UART, ADC, and more Display – 1.28-inch TFT display with 240×240 resolution using GC9A01 driver, and FT3267 capacitive touchscreen controller RFID – […]

July 3, 2026July 3, 2026

HALO TOUCH V2 – A customizable desktop USB hub with rotary encoder fitted with round touchscreen display

Designed by Innoelement in Guangzhou, China, the HALO TOUCH V2 is a multifunctional desktop USB hub with a round touchscreen and a rotary encoder designed as an interactive desk companion. It integrates system monitoring, media playback, and productivity features for workstations, home offices, and desktop setups. The device features a USB 2.0 hub with two USB Type-A ports, one USB Type-C port, two microSD card readers, and a 100Mbps Ethernet port with per-port power monitoring. Its 360 × 360 IPS touchscreen supports a Pomodoro timer, photo and animation viewer, MP3 player, audio spectrum visualizer, and an AIDA64 system monitoring dashboard. A rotary encoder provides Microsoft Surface Dial-compatible controls on Windows, while 2.4GHz Wi-Fi enables clock synchronization and OTA firmware updates. It also supports USB PD power input and customization for themes, media, and animations using files on a microSD card. MAHOGANY HALO TOUCH V2 specifications: MCU – Unspecified (potentially ESP32-S3) […]

Elecrow ESP32-S3 rotary displays combine round IPS touchscreen, knob, and press input

Elecrow has added two new ESP32-S3-powered rotary displays to its CrowPanel Advance lineup, which come in 1.28-inch (240×240) and 2.1-inch (480×480) sizes, and feature a round IPS screen with rotary, touch, and press input. Both rotary displays feature IPS capacitive touchscreens, rotary input with a smooth feel, knob-press operation, ambient lighting, USB-C (5V) power, and expansion capabilities via UART, I²C, and FPC connectors. These features make them suitable for DIY projects, IoT prototypes, and embedded product development across various applications, including smart home appliances, industrial control, and UI training scenarios. Elecrow CrowPanel 1.28-inch and 2.1-inch rotary display specifications: SoC – Espressif Systems ESP32-S3R8 CPU – Dual-core Xtensa LX7 processor @ up to 240 MHz Memory – 512 KB SRAM, 8 MB PSRAM Wireless Wi-Fi 4 (802.11 b/g/n, 2.4 GHz) Bluetooth 5.0 LE Storage – 16 MB flash Display Two options 1.28-inch IPS touchscreen, 240 × 240 resolution 2.1-inch IPS touchscreen, […]

ESP32 S3 Knob Touch LCD 1.8, dual ESP knob display dev board

June 25, 2025June 25, 2025

Battery-powered knob display board pairs ESP32-S3 and ESP32 wireless SoCs, features audio DAC for audio visualization

The Waveshare ESP32-S3-Knob-Touch-LCD-1.8 is a batterry-powered knob display board designed for HMI applications that combines ESP32-S3 and ESP32 SoCs in a dual MCU architecture. The design differs from other ESP32-based knob / rotary encoder with a built-in display such as the MaTouch SmartKnob, M5Dial, and LILYGO T-Encoder Pro. The Waveshare device also stands out with a larger 1.8-inch capacitive touch display, integrated audio DAC, and real-time audio visualization. It comes with a CNC-milled full-metal enclosure for a more premium and durable build. The devkit supports swipe gestures and volume control, and can be used as a Pomodoro timer, a text reader, a secondary PC screen, and a Bluetooth audio player through a 3.5mm audio jack. Other features include a digital microphone, a vibration motor, and a microSD card slot for storage. ESP32-S3-Knob-Touch-LCD-1.8 Specifications: MCUs Espressif ESP32-S3R8 CPU – Dual-core Tensilica LX7 microcontroller up to 240 MHz with vector instructions for AI […]

ESP32-2424S012 round display full enclosure

August 6, 2024August 5, 2024

Arduino and LVGL-compatible ESP32-C3 board features a 1.28-inch round touchscreen display fully housed in a case

The ESP32-2424S012 is an ESP32-C3 WiFi and BLE development board with a 1.28-inch round touchscreen color display that is fully housed in a black or white plastic enclosure and suitable for Arduino and LVGL library. As we’ll see further below some have also used it with Tasmota and ESPHome firmware. We previously covered several tiny ESP32-S3/ESP32-C3 boards with a round display such as the LILYGO T-RGB ESP32-S3 board, Makerfabs “ESP32-S3 Round SPI TFT with Touch 1.28″, SB Components’ Dual Roundy, but they either don’t come with a case at all, or only the front is covered, but the bottom is laid bare. The ESP32-2424S012 is quite similar, but it can be purchased with a case that covers both the front and back with some openings for expansion connectors. ESP32-2424S012 board specifications: Wireless module – Espressif Systems ESP32-C3-MINI-1U module SoC – ESP32-C3 RISC-V microcontroller @ 160 MHz with 400 KB SRAM, 2.4 […]

June 24, 2024June 25, 2024

ESP32-S3 rotary encoder features 1.2-inch AMOLED touchscreen display and Qwiic connectors

LILYGO T-Encoder-Pro is a rotary encoder based on Espressif Systems ESP32-S3 WiFi and Bluetooth SoC, equipped with a 1.2-inch AMOLED with touchscreen support, and two Qwiic connectors for expansion. LILIGO T-Encoder was introduced in 2022 with ESP32 WiFi and Bluetooth SoC and a few GPIOs that enabled it to be fitted on a 2-key keypad shield. The LILYGO T-Encoder Pro has a completely different design with a more advanced ESP32-S3 SoC, an integrated touchscreen display, and GPIOs are now exposed through Qwiic connectors instead of headers. LILYGO T-Encoder-Pro specifications: Wireless SoC – Espressif Systems ESP32-S3R8 CPU – Dual-core Tensilica LX7 @ up to 240 MHz with vector instructions for AI acceleration Memory – 512KB RAM, 8MB PSRAM Wireless – 2.4 GHz WiFi 4 and Bluetooth Storage – 16 MB flash (W25Q128) Display – 1.2-inch rounded AMOLED with ∅390mm resolution via SH8601A-W14-T06 QSPI controllers; CHSC5816 I2C touch and rotary encoder chip […]

April 3, 2024April 3, 2024

M5Stack BugC2 programmable robot base has an STM32 control chip and a four-way motor driver

Modular IoT hardware developer, M5Stack, has released a new programmable robot base based on the STM32F030F4 microcontroller with LEGO and Arduino compatibility. The M5Stack BugC2 is “compatible with the M5StickC series controllers,” and includes the ESP32-powered M5StickC Plus2 development kit in the package. It features an L9110S four-way motor driver for all-directional operation, two programmable RGB LEDs, an infrared encoder, and a 16340 rechargeable Li-ion battery holder. It also comes with a USB Type-C port for charging the battery and supports onboard reverse charging protection and voltage detection. Listed applications for the M5Stack BugC2 programmable robot base include remote motor control, robot control, and an intelligent toy. M5Stack BugC2 specifications: Microcontroller – STMicroelectronics STM32F030F4 microcontroller, with Arm 32-bit Cortex-M0 CPU @ 48 MHz, and with up to 256KB of flash memory Motor driver – L9110S Infrared receiver – SL0038GD IR detection distance (StickC Plus2) Infrared emission distance (linear distance) at […]