Arduino News - Page 2 of 147 - CNX Software

July 28, 2026July 28, 2026 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

LILYGO T-Display C5 board features 1.9-inch IPS color LCD, battery support, Qwiic expansion connectors

LILYGO T-Display C5 is an ESP32-C5 board with a 1.9-inch IPS color LCD, a USB-C port for power and programming, Lithium battery support, and GPIO expansion via headers and two Qwiic expansion connectors. The main benefit of using an ESP32-C5 chip is support for dual-band WiFi 6 connectivity (2.4/5.0 GHz), and it also keeps Bluetooth LE 5.x and the 802.15.4 radio for Zigbee/Thread/Matter found in the ESP32-C6. LILYGO T-Display C5 specifications: Wireless module – Espressif Systems ESP32-WROOM-C5-1U-N16R8 SoC – ESP32-C5HR8 CPU Single-core 32-bit RISC-V processor @ up to 240 MHz Low-power RISC-V core @ 40 MHz acting as the main processor for power-sensitive applications Memory – 384 KB SRAM on-chip, 8MB PSRAM Storage – 320 KB ROM Wireless Connectivity Dual-band (2.4GHz/5 GHz) 802.11ax WiFi 6, with 802.11b/g/n WiFi 4 standard fallback Bluetooth 5.0 Low Energy (LE) 802.15.4 radio for Zigbee 3.0 and Thread 1.3 Storage – 16MB flash Antenna – […]

July 27, 2026 by Debashis Das - 3 Comments

Open RC Spotter is an open-source ESP32 telemetry and data logger for RC cars and toys

Jake Wachlin (Energy Labs) has designed the Open RC Spotter, an open-source ESP32-based telemetry and data logger for RC cars, trucks, and other RC toys. The platform logs synchronized GPS position, acceleration, gyroscope, steering, throttle, battery voltage, temperature, and lap timing data to a microSD card, while also supporting live telemetry over Wi-Fi and ESP-NOW. We have previously written about telemetry and data-logging hardware designed for full-sized vehicles, such as the Macchina A0 ESP32 CAN board, which supports OBD-II diagnostics and RaceChrono integration. Compared to that, this ESP32-based logger is designed for RC cars and trucks, combining GPS, IMU, PWM monitoring, and onboard data logging in a compact ESP32-based platform. Open RC Spotter specifications: Wireless module – ESP32-WROOM-32E-N4 SoC – ESP32 dual-core Tensilica LX6 microcontroller @ up to 240 MHz with 520KB SRAM Storage – 4MB flash Wireless – 2.4 GHz WiFi 4 and Bluetooth 4.2 BR/LE connectivity, built-in PCB antenna […]

July 22, 2026July 22, 2026 by Debashis Das - 2 Comments

Arduino UNO Q Arcade bundle lets you build a custom retro gaming console for about $90

Arduino UNO Q Arcade bundle is a kit designed to build a custom retro gaming console. The bundle combines the Arduino UNO Q 4GB SBC with a set of daisy-chainable Modulino I2C modules, allowing users to create a custom game controller without requiring complex wiring or breadboards. The kit relies on Qwiic connectors to daisy-chain the input modules, whose data is then processed by the UNO Q to emulate standard HIDs for gaming or development. The plastic parts can be 3D printed by the user. Arduino UNO Q Arcade bundle contents: Arduino UNO Q 4GB – A Qualcomm Dragonwing QRB2210 SBC with an onboard eMMC, running Debian Linux Modulino Joystick – An I2C node configurable for simulating D-pad inputs or mouse cursor movements Modulino Buttons – An I2C node for mapping single keystrokes, multi-key shortcuts, or mouse clicks Modulino Movement – A 6-axis IMU node for motion-based mouse control Note: […]

July 21, 2026 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

nRF54L Arduino Core project brings Arduino support to Nordic Semi nRF54L wireless SoCs

nRF54L Arduino Core is an open-source project designed to bring Arduino support for Nordic Semiconductor nRF54L wireless SoCs, starting with Seeed Studio’s XIAO nRF54L15 (Sense) and XIAO nRF54LM20A (Sense) boards, as well as compatible Holyiot nRF54L15 modules. Since the launch of the nRF52840-based Arduino Nano 33 BLE board in 2019, Nordic nRF52 wireless microcontrollers have been officially supported by the Arduino IDE. However, it’s not quite the case for the newer nRF54L Cortex-M33 microcontrollers. Lolren has decided to change that with the unofficial nRF54 Arduino core project. nRF54L Arduino Core highlights: Dual-core access – Use the 128 MHz Cortex-M33 application CPU and the VPR RISC-V coprocessor without adopting a vendor RTOS Wireless Bluetooth LE support – Peripheral, central, dual-role, GATT server/client, HID, BLE UART, PHY/DLE/MTU control, LE Secure Connections, bonding, OOB, Numeric Comparison, privacy/RPA, and CSRK signed writes Experimental support for Zigbee – Partial stack and device demonstrations; incomplete Zigbee […]

July 18, 2026July 18, 2026 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

M5Stack Core2 gets open-source firmware to reproduce OpenAI’s Codex Micro features

IAMLIUBO has written firmware for the M5Stack Core2 IoT controller to reproduce the features of the $230 Codex Micro macro pad for OpenAI’s AI coding agent platform, enabling developers to more easily monitor and control agents. The original is neat with a CNC-milled enclosure, a rotary encoder, and a joystick, but it’s rather pricey (and now out of stock), only ships to the US, and the company has now launched pre-orders for a 25-key “Custom Alternative” going for $125. However, you can easily reproduce the same functionality with other macro pads with rotary encoders, such as the SayoDevice O3C, DuckyPad Pro, Waveshare MK10, T-Keyboard-S3 Pro, and others at a fraction of the price by simply remapping the keys. IAMLIUBO went another route with the M5Stack Core2 IoT controller since it doesn’t come with any keys. Instead, he leveraged the 2-inch touchscreen LCD of the ESP32 device with six agent keys, […]

July 17, 2026July 21, 2026 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Olimex PICO-EVB automation board adds high-voltage terminals to Raspberry Pi Pico family

Olimex PICO-EVB board for the Raspberry Pi Pico and compatible boards is designed for high-voltage automation with four 3.3-30V DC or 110-220V AC inputs and four 15V DC/220V AC relays. It features two 20-pin headers enabling users to connect their preferred Pi Pico-compatible board, a USB-C port for power and programming, a UEXT connector for I2C, UART, and SPI expansion, and status LEDs for the high-voltage signals. Olimex PICO-EVB specifications: Compatible boards Raspberry Pi Pico, Pico 2, Pico W, Pico 2 W Olimex RP2040-PICO30 USB – 1x USB Type-C port I/Os 4x 15A 24V DC/240V AC relays 4x optoisolated inputs taking 3.3 – 30V DC or 110-220V AC UEXT connector with I2C, UART, and SPI signals Unpopulated 18-pin GPIO header Misc 4x status LEDs for the relays 4x status LEDs for the inputs Power Supply – 5V power supply via screw connector, USB-C port, or Pico’s micro USB connector Dimensions […]

July 14, 2026July 14, 2026 by Jean-Luc Aufranc (CNXSoft) - 11 Comments

Meet Moddo Pinch – The world’s smallest 32-bit Arduino-compatible board (2026 Edition)

Canada-based Moddo has designed the Pinch board, which it claims is the world’s smallest 32-bit Arduino-compatible board so far, measuring just 10.9 x 10.5 mm. The board is powered by a Microchip SAMD11 Cortex-M0+ microcontroller with 4 KB SRAM and 16KB flash, features an RGB LED, reset/bootloader button, 3.3 V LDO, a USB-C port, and a total of 12 GPIOs. Moddo Pinch specifications: Microcontroller – Microchip SAM D11 (ATSAMD11D14A) MCU core – Arm Cortex-M0+ processor running at up to 48 MHz RAM – 4 KB SRAM Storage – 16 KB Flash (12 KB for sketches, 4 KB bootloader) USB – 1x USB Type-C port for power, programming (CDC serial), and HID Expansion – 16-pin header (1.27mm pitch) 12x GPIO (D0–D11) 5x analog input (A0–A4) 11x PWM 1x DAC 1x I2C, 1x SPI, 2x UART(multiplexed with USB & D5/D6) Debug – SWD on D5 (SWCLK) and D6 (SWDIO) Misc RGB LED […]

July 10, 2026 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

Open Book Touch – A DRM-free, WiFi-connected 4.26-inch open-source hardware e-reader (Crowdfunding)

Oddly Specific Objects has launched a crowdfunding campaign for the Open Book Touch, an ESP32-S3-based e-reader with a 4.26-inch e-paper display with 480 x 800 resolution and a capacitive touch screen. The open-source hardware device comes with 16 MB flash, 8MB PSRAM, a frontlight with warm and cool LEDs, a microSD card for storage, and an 800 mAh user-replaceable LiPo battery with everything housed in a 3D printed enclosure. Open Book Touch specifications: SoC – Espressif Systems ESP32-S3 dual-core MCU with Wi-Fi and Bluetooth LE connectivity Memory – 8 MB octal SPI PSRAM Storage 16 MB quad SPI flash MicroSD card slot Display 4.26-inch, 480 × 800 e-paper; 1-bit and 2-bit grayscale with dithering Capacitive touchscreen based on FT6336 low-power controller Frontlight – five warm + five cool LEDs, independently dimmable USB – USB Type-C for power/charging and programming Misc – 3D-printed plastic enclosure; snap-fit, with 3D-printable CAD for custom shells; […]