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December 12, 2024 by Debashis Das - 4 Comments

ESP32-C3-based 2-channel Wi-Fi AC relay support energy monitoring with Home Assistant

Seed Studio 2 Channel Wi Fi AC Relay Module

Seeed Studio has recently launched a 2-channel Wi-Fi AC relay built around the XIAO ESP32C3 WiFI and Bluetooth module. The device is a simple WiFi relay module that can control two independent 100-240V AC appliances and is designed to be compatible with both Home Assistant with ESPHome firmware flashed by default. The device also features a built-in BL0942 power meter with a maximum load capacity of 2400W at 240V for real-time and historical energy consumption monitoring. These features make this device suitable for applications such as energy tracking and remote control of appliances. Seeed Studio 2-channel Wi-Fi AC relay specifications: MCU – XIAO ESP32-C3 with ESP32-C3 WiFi 4 and Bluetooth 5.x RISC-V microcontroller, USB-C port (unused here) Wireless connectivity – 2.4GHz Wi-Fi Relay channels – 2 independent channels Power Input terminals – Neutral (N), Live (L) Input voltage – 100-240V AC, 50/60Hz Output terminals Channel 1: N1 (Neutral), L1 (Live) […]

December 11, 2024December 11, 2024 by Debashis Das - No Comments

Waveshare Double Eye LCD module is a high-tech alternative to googly eyes

Waveshare has recently launched the Double Eye LCD module (also known as the 0.71inch DualEye LCD module), a high-tech alternative to googly eyes, with two 0.71-inch round IPS displays with 160×160 pixels of resolution and 65K color depth. It uses the GC9D01 driver and communicates via an SPI interface. The module operates at a 3.3V or 5V and is designed so that both ESP32 and Arduino boards can drive it. These features make this device useful for applications like wearables, robotics, IoT devices, etc… Waveshare Double Eye LCD module specifications: Display Type – Dual 0.71-inch round LCD displays Resolution – 160×160 pixels Panel – IPS (wide viewing angle) Colors – 65K colors Pixel Pitch – 37.5 × 112.5 µm Controller and Driver Driver – GC9D01 Interface – SPI Operating Voltage – 3.3V / 5V Dimensions Display – 18 mm ∅ per round LCD Module – 51 x 20 mm The […]

December 11, 2024December 11, 2024 by Sayantan Nandy - No Comments

SenseCAP Indicator – An ESP32-S3 and RP2040-based Meshtastic LoRa device with a 4-inch touchscreen display

The SenseCAP Indicator is a 4-inch capacitive touchscreen device designed for IoT connectivity and Meshtastic applications powered by Espressif Systems ESP32-S3 and Raspberry Pi RP2040 microcontrollers. It supports Wi-Fi (802.11b/g/n) and Bluetooth 5.0 LE connectivity, as well as LoRa using the Semtech SX1262 chip. The device also provides Grove connectors for expansion and a microSD slot supporting up to 32GB. Preloaded with Meshtastic firmware, the SenseCap Indicator is ready to function as a Meshtastic desktop or car node and can be reconfigured into a LoRaWAN Single-Channel Gateway. It features a 3.95-inch RGB touchscreen with 480×480 resolution, which is larger than most other Meshtastic solutions we’ve covered. Previously, we reviewed the SenseCAP Indicator D1Pro, which shares many features with the SenseCAP Indicator. However, the D1Pro integrates tVOC and CO2 sensors, along with an external Grove AHT20 TH sensor for precise temperature and humidity measurements. With real-time air quality monitoring from the […]

December 10, 2024 by Tomisin Olujinmi - No Comments

LoRaWAN no code ESP32-S3 development platform offers Arduino MKR, MikroBus, FeatherWing, and Grove expansion (Crowdfunding)

Sheffield-based IoT company, inx-systems has developed a programmable LoRaWAN IoT module and a development breakout board that integrates with Arduino MKR, Adafruit FeatherWing, Grove, and mikroBUS shields. The module is powered by an ESP32-S3 microcontroller which comes preloaded with inx’s no-code LoRaWAN software development platform, Lucid. The WAN-4-ALL module has built-in Wi-Fi, Bluetooth, and LoRaWAN connectivity via the ESP32-S3 microcontroller and Seeed Studio Wio-E5 module. This makes the module suitable for short-range, medium-range, and long-range IoT applications such as remote monitoring, home automation, industrial control, and smart agriculture. We have covered other LoRaWAN development platforms such as SB Component’s RAKWireless-based products, Particle’s multi-radio devices, and the UnPhone. The WAN-4-ALL module differentiates itself with the preloaded no-code LoRaWAN development environment and multiple connectivity options. WAN-4-ALL module specifications: SoC – Espressif Systems ESP32-S3 dual-core microcontroller @ 240MHz with Wi-Fi 4, Bluetooth LE 5 LoRaWAN Module – Seeed Studio Wio-E5 Module based on […]

December 6, 2024 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

XIAO Powerbread is a breadboard power supply and meter based on XIAO RP2040 or ESP32 USB-C board

XIAO Powerbread power meter for breadboard

The XIAO Powerbread is a breadboard power supply and meter compatible with XIAO RP2040 or ESP32 USB-C boards and equipped with a color LCD display showing real-time voltage, current, and power consumption for 5V and/or 3.3V power rails. Breadboard power supplies are nothing new. We’ve written about several over the years including the Toaster board with adjustable voltage from 5 to 16V, the SwitchTrick switching power supply board, and the MEGO portable breadboard power supply with a built-in battery. The XIAO Powerbread only supports 5V and 3.3V power rails, but its main selling point is its integrated breadboard power meter function. XIAO Powerbread specifications: Supported USB-C modules General purpose MCU – XIAO RP2040, XIAO RP2350 WiFi / Bluetooth MCU – XIAO ESP32S3, XIAO ESP32C3, XIAO ESP32C6 Display – 0.96-inch color TFT LCD with 160×80 resolution and ST7735S SPI controller Power monitoring – 2x TI INA3221 sensors connected over I2C […]

December 4, 2024December 4, 2024 by Jean-Luc Aufranc (CNXSoft) - 10 Comments

CapibaraZero firmware enables low-cost Flipper Zero alternatives based on ESP32-S3 hardware

CapibaraZero ESP32-S3 Flipper Zero alternative

CapibaraZero open-source firmware aims to offer a low-cost alternative to Flipper Zero for ESP32-S3-based hardware platforms and soon other gizmos with ESP32 wireless microcontrollers, notably the LilyGO T-Embed CC1101, similar to the original T-Embed with ESP32-S3 WiSoC, but also featuring a Texas Instruments CC1101 Sub-GHz microcontroller and an NXP PN532 NFC/RFID module. The Flipper Zero is a popular portable multi-tool for pentesters and hardware hackers based on STMicro STM32WB55 Bluetooth 5 LE & 802.15.4 wireless microcontroller and a TI CC1101 Sub-Ghz MCU that got involved in controversies such as a ban proposal in Canada last year due to its (dubious) potential use for car theft. Since then we’ve seen several alternatives such as Monstatek M1 (that’s yet to be delivered to backers…) and HackBat open-source hardware with Raspberry Pi RP2040, ESP8266 WiFi module, and the CC1101 RF transceiver. The CapibaraZero firmware offers another way to create your own cheap Flipper […]

December 2, 2024 by Debashis Das - No Comments

$20 ATOMIC Display Base is a low-cost HDMI display driver for M5Stack’s ESP32-based Atom IoT controllers

M5Stack has recently launched the M5Stack ATOMIC Display Base, an HDMI display driver designed to emulate traditional SPI TFT-LCD data output using Gowin GW1NR-9C FPGA and a built-in LT8618SX RGB-to-HDMI chip and designed to work with the company’s Atom IoT controller family based on ESP32 wireless microcontrollers. The module supports up to 720p (1280×720) image output with a 24-bit color depth and has an average frame rate of 12–16 FPS. Additionally, it can be paired with ATOM series hosts for various memory and application needs. These features make this compact device suitable for industrial control displays, smart home information screens, educational and conference presentations, and remote monitoring displays. The only downside of this device is that it requires a display with adaptive resolution scaling to avoid compatibility issues. M5Stack ATOMIC Display Base (HDMI display driver) specifications FPGA – Gowin GW1NR-9C (PDF datasheet) FPGA with 8,640 LUTs used to simulate SPI TFT-LCD data […]

November 28, 2024November 28, 2024 by Tomisin Olujinmi - No Comments

ESP32-based YULC USB-C LED Controller features dual power inputs, supports WLED and ESPHome firmware

The YULC (Yes, a USB-C LED Controller) board is a compact, ESP32-S3-powered LED controller with USB-C and DC jack power inputs. It is a fully featured board that can easily replace a rat’s nest of wires and save space and time. This ESP32 LED controller features a built-in buck regulator that converts input power from the USB-C port or barrel jack to the voltage needed for the LED strips. The YULC provides two separate LED channels with a level shifter each to ensure clean and powerful data output, removing the need for a sacrificial pixel or external level shifter. Each channel also has a power MOSFET that can turn off the channels individually and dim simple LED strips via PWM. AAElectronics, the maker, has previously released an IR remote—the Home Assistant-compatible ESP 360 Remote—which we covered at the time. Similar products include the SMLIGHT A1-SLWF-03, DFRobot’s EDGE102-DMX512, and the PixelBlaze […]