touchscreen News - CNX Software - Embedded Systems News

April 14, 2025 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Pimoroni Presto – A Raspberry Pi RP2350-powered 4-inch wireless desktop touch display

Pimoroni Presto is a 4-inch desktop color touch display powered by a Raspberry Pi RP2350 microcontroller, and equipped with a Raspberry Pi RM2 wireless module for WiFi 4 and Bluetooth connectivity. The display comes with 16MB of SQPI flash and 8MB of PSRAM, seven RGB LEDs for ambient lighting, a microSD card slot, a piezo speaker, a Qwiic/STEMMA QT connector for expansion, a USB-C port for power and programming, and a 2-pin JST connector for an optional battery. Pimoroni Presto specifications: Microcontroller – Raspberry Pi RP2350B MCU CPU Dual-core Arm Cortex-M33 @150MHz with Arm Trustzone Dual-core 32-bit Hazard3 RISC-V @ 150MHz Up to two cores can be used at the same time Memory – 520KB SRAM Package – QFN-80; 10×10 mm Memory – 8MB PSRAM Storage 16MB QSPI flash MicroSD card slot Display – 4-inch square IPS LCD screen with 480 x 480 resolution, capacitive touchscreen Wireless – Raspberry Pi […]

April 11, 2025April 11, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

T-Pico-2350 is a fully integrated devkit with Raspberry Pi RP2350, ESP32-C6, 2.33-inch color touchscreen display, and HDMI video output

LILYGO T-Pico-2350, also called the T-Pico2, is a fully enclosed devkit based on Raspberry Pi RP2350 MCU, an ESP32-C6 SoC for wireless connectivity, a 2.33-inch capacitive color touchscreen display, and an HDMI (DVI) video output port. The design is an update to the T-PicoC3 introduced in 2022 with the case design of the T-Display S3 Pro, and the devkit also features a microSD card slot, a USB-C port for power and programming, two GPIO headers, a 13-pin GPIO FPC connector, two Qwiic I2C/UART connectors, and a PMU for battery management. T-Pico-2350 specifications: Microcontroller – Raspberry Pi RP2350A CPU Dual-core Arm Cortex-M33 @ 150 MHz with Arm Trustzone, Secure boot OR Dual-core RISC-V Hazard3 @ 150 MHz Up to two cores can be used in any combination Memory – 520 KB on-chip SRAM Storage 16MB SPI flash connected to RP2350 MicroSD card slot Display – 2.33-inch color IPS LCD (ST7796S SPI […]

April 4, 2025April 4, 2025 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

ESP32-P4 credit card-sized board features Ethernet, WiFi 6, four USB ports, 40-pin GPIO header, MIPI DSI and CSI connectors

Waveshare ESP32-P4-Module-DEV-KIT credit card-sized board may look like a Linux-powered Raspberry Pi SBC, but instead, it’s based on an “ESP32-P4-Module” comprised of a 400 MHz Espressif ESP32-P4 RISC-V general-purpose microcontroller, an ESP32-C6 “co-processor” for WiFi 6 and Bluetooth 5, and a 16MB SPI NOR flash. Designed for HMI applications, the board offers MIPI DSI and CSI connectors, as well as a 100Mbps Ethernet RJ45 jack, four USB 2.0 ports, a 40-pin GPIO header, and more. It basically integrates the same ports as a Raspberry Pi SBC minus HDMI, but relies on a microcontroller instead of a Linux-capable application processor. Waveshare ESP32-P4-Module-DEV-KIT specifications: ESP32-P4-Module Microcontroller – ESP32-P4NRW32 MCU Dual-core RISC-V microcontroller @ 400 MHz with AI instructions extension and single-precision FPU Single-RISC-V LP (Low-power) MCU core @ up to 40 MHz GPU – 2D Pixel Processing Accelerator (PPA) VPU – H.264 and JPEG codecs support Memory – 768 KB HP L2MEM, […]

March 31, 2025March 31, 2025 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

ESP32-S3 Smart Audio devkit integrates 1.8-inch round touch LCD, microphone, optional battery and speaker box

Waveshare ESP32-S3 round display development board

Waveshare ESP32-S3-Touch-LCD-1.85C is an ESP32-S3 development kit with a 1.85-inch round touchscreen display with 360×360 resolution, support for Wi-Fi & Bluetooth BLE 5, and a built-in microphone. There’s also the ESP32-S3-Touch-LCD-1.85C-BOX with the same specifications, but an additional box with a speaker and a 3.7V battery. Both versions come with 16MB SPI flash, a microSD card slot, a USB-C port, a few buttons, GPIO and I2C expansion headers, and can be used as music players, smart speakers, HMI solutions, etc… It’s not quite the first ESP32-S3 audio + display devkit we’ve covered, as Waveshare introduced the ESP32-S3-Touch-AMOLED-1.8 earlier this year with a squared AMOLED display, and Wireless Tag launched the ESP32 Agent Dev Kit to interface with LLMs. ESP32-S3-Touch-LCD-1.85C specifications: SoC – Espressif ESP32-S3R8 CPU – Dual-core Tensilica LX7 microcontroller up to 240 MHz with vector instructions for AI acceleration Memory – 8MB PSRAM Wireless – WiFi 4 and Bluetooth […]

March 13, 2025 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Variscite VAR-SOM-AM62P SoM features Texas Instruments Sitara AM62P5 SoC for cost-effective multimedia applications

Variscite VAR-SOM-AM62P is a system-on-module powered by Texas Instruments Sitara AM62P5 quad-core Cortex-A53 + Cortex-R5F SoC coupled with up to 8GB LPDDR4 RAM and 128GB eMMC flash, and designed for cost-effective multimedia applications. The SO-DIMM module offers high speed interfaces such as gigabit Ethernet and USB 2.0, a certified WiFi 6 and Bluetooth 5.4 module, and operating in the -40 to 85°C industrial range. As a VAR-SOM module, it’s pin-to-pin compatible with other modules from the family such as the VAR-SOM-6UL or VAR-SOM-IMX93. Variscite VAR-SOM-AM62P specifications: SoC – Texas Instruments Sitara AM62P5 CPU 4x Arm Cortex-A53 @ 1.4 GHz up to 12,880 DMIPS Arm Cortex-R5F real-time core up to @ 800 MHz GPU – 3D GPU with OpenGL ES 3.2 & Vulkan1.2 VPU – H.264/H.265 Video Encoder/Decoder No PRU System Memory – 1GB to 8GB LPDDR4 Storage – 8GB to 128GB eMMC flash Networking Gigabit Ethernet PHY (Analog Devices ADIN1300) […]

March 12, 2025March 11, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

Tips to use a touchscreen display with Raspberry Pi OS in 2025

I’ve just reviewed the SunFounder 10.1-inch touchscreen display with Raspberry Pi 5 running Raspberry Pi OS, and the experience was not quite as smooth as I had expected, so I’ll report some tips to save people time. The first is the software keyboard. Matchbox keyboard used to be the go-to solution, but two years ago, my preferred keyboard became the Onboard keyboard. Sadly, it’s not working so well with the latest Raspberry Pi OS using labwc Wayland window-stacking compositor, so now Raspberry Pi recommends squeekboard. It was not installed by default, but installation is fairly easy:

sudo apt install squeekboard

1	sudo apt install squeekboard

It did not show up automatically when trying to type in a text field, maybe because I’m using a third-party touchscreen keyboard, but going to Raspberry Pi Configuration and setting On-screen Keyboard to Enabled always in the Display tab fixed that. I was able to type a URL/web search terms in the URL […]

March 11, 2025March 12, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

Review of SunFounder 10.1-inch touchscreen display for SBCs using Raspberry Pi 5 and Radxa ROCK 5B

SunFounder 10.1-inch RPI Touchscreen Display Review

SunFounder has just sent us one of their 10.1-inch touchscreen display designed for single board computers (SBCs) for review. It supports the Raspberry Pi family, but not only, thanks to a flexible design that allows mounting all sorts of boards with mounting holes that fit within an 85x70mm area. All you need is a board with HDMI output, a spare USB port for the touchscreen, and 5V USB-C input (up to 5A). So I’ll first test the SunFounder 10.1-inch touchscreen display with a Raspberry Pi 5 (85x56mm), then a larger Radxa ROCK 5 Model B Pico-ITX SBC (100 x 72mm). Since the display can also be used as an external touchscreen monitor, I’ll also try it with my laptop in Ubuntu 24.04 and Windows 11. SunFounder 10.1-inch touchscreen display specifications Key features and specifications: Display Type – IPS LCD Resolution – 1280×800 (16:10 aspect ratio) Touchscreen – 10-point capacitive Viewing […]

March 10, 2025March 10, 2025 by Debashis Das - 6 Comments

ESP32-S3 based AC voltage controller/dimmer features a knob with integrated display

Makerfabs has recently introduced Matouch 1.28-inch ToolSet_AC Dimmer an open-source ESP32-based AC voltage controller for dimming lights or adjusting motor speeds using phase-cut dimming. Built around an ESP32-S3 wireless MCU, it features a 1.28” capacitive touch display (240×240), and a UI designed with LVGL/Squareline and the Arduino V2.3.4 IDE. The device relies on a BT139 Triac and a zero-cross detection circuit for precise AC voltage control, along with an onboard relay to enable a full AC on/off switch. With an integrated AC-DC module providing 5V @ 0.6A, it can operate within an input range of AC 100-240V, 50Hz-60Hz, with a maximum load of 10A at 240VAC. Designed for home and industrial applications, it can control lighting environments and electrical appliances while being open-source for customization and integration into various automation projects. Matouch 1.28-inch ToolSet_AC Dimmer specifications: SoC – Espressif Systems ESP32-S3 CPU – Xtensa® Dual-core 32-bit LX7 Microprocessor with up to 240MHz […]