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MutantW V1 – An open-source ESP32 smartwatch designed with Autodesk Fusion 360 and EAGLE

Rahmanshaber is known for its DIY Raspberry Pi handheld PCs such as MutantC v4, but MutantW V1 is a completely different device as an ESP32-based DIY open-source smartwatch that he designed with Autodesk Fusion 360 and EAGLE. The smartwatch is equipped with a 1.7-inch IPS LCD display (non-touch), two hardware buttons, a NeoPixel RGB LED, a vibration motor, as being powered by an ESP32 SoC offers both 2.4GHz WiFi 4  Bluetooth LE connectivity. MutantW V1 specifications: WIreless module – A.i. Thinker ESP32-S WiFi and Bluetooth module with ESP32 dual-core processor @ 240MHz with 520KB SRAM, 4MB SPI flash Display – 1.69-inch SPI IPS LCD display (ST7789 driver) with 280 x 240 resolution, scratch-resistant front glass. Note: no touchscreen Programming – Via 4-pin charging cable or OTA firmware upgrade Misc – 2x programmable buttons, NeoPixel RGB LED, vibration motor Battery – 3.7V/200mAh LiPo battery likely good for one or two days; […]

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ESP32 CAN board fits into OBD-II dongle, supports auto shutdown

RejsaCAN-ESP32 is a small board based on ESP32-WROOM-32 WiFi (and Bluetooth) module with a CAN interface that fits into a 3D printed OBD-II dongle for easy installation into most cars. Magnus Thomé has already published several automotive projects, notably for car racing with a system that checks real-time tire temperature, and he designed RejsaCAN-ESP32 board so that it can be plugged directly into his car with support for 5-15V input voltage, and also includes an auto-shutdown option to prevent battery drain by monitoring the battery voltage in the car. RejsaCAN-ESP32 specifications: Wireless module – ESP32-WROOM-32 module with a dual-core ESP32 processor @ 240 MHz with 2.4 GHz WiFi 4 and Bluetooth 4.2 connectivity, PCB antenna, 32Mbit SPI flash USB – 1x USB-C port for power and programming via CP2104 USB to TTL chip Expansion – 15-pin header with 3x GPIO, SPI, I2C, analog input, PWM or analog output, CAN bus […]

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Unsurv offline – An ESP32 GNSS receiver board with NFC, accelerometer (Crowdfunding)

Unsurv offline is a compact and lightweight board with ESP32 WiSoC, a GNSS receiver, an accelerometer, and NFC capabilities to help developers/users collect and analyze location data in a privacy-friendly way. Unsurv Technologies initially developed the board to better understand offline video surveillance with OpenStreetMap (OSM) data. It does so by using a database of camera locations from the OSM on the SD card, “counts” surveillance cameras as you walk past them, and you can then transmit data via NFC and visualize it on your smartphone. The accelerometer is used to wake up the board from deep sleep upon detection of motion. The company has now made the board open-source and other applications are also possible. Unsurv offline specifications: Wireless modules TTGO T-micro32 WiFi 4 and Bluetooth 4.2 module based on ESP32-PICO-D4 SiP with dual-core ESP32 processor, 4MB FLASH, ceramic antenna U-blox CAM-M8C (aka u-blox M8) module with concurrent reception […]

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$10 LILYGO T-Display RP2040 board integrates a 1.14-inch color display

As its name implies, LILYGO T-Display RP2040 is a Raspberry Pi RP2040 based development board that comes with a display, and more exactly a 1.14-inch color display with 240×135 resolution and based on ST7789V SPI display driver. The T-Display RP2040 board joins other Rasberry Pi RP2040 boards with integrated displays like Arducam Pico4ML, but does so at a much lower price with LILYGO selling the board for just $9.98 on Aliexpress. LilyGO T-Display RP2040 specifications: Microcontroller – Raspberry Pi RP2040 dual-core Cortex-M0+ MCU with 264 KB of embedded SRAM Storage – 4MB SPI flash Display – 1.14-inch full-color IPS LCD Display (ST7789V SPI controller) with 240 x 135 resolution Expansion – 15-pin + 12-pin expansion headers with 14x GPIOs, 6x PWMs, up to 2x UART, up to 2x I2C, up to 2x SPI, 2x programmable high-speed I/O, 5V, 3.3V, Vbat, and GND Misc – Boot & enable buttons, 2x user […]

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LILYGO T-32C3 – A small ESP32-C3 WiFi & BLE IoT module with 4MB flash

We’re slowly starting to see more hardware-based on ESP32-C3 RISC-V processor, and LILYGO T-32C3 is a compact module based on the WiFi & Bluetooth LE processor that includes 4MB flash and a PCB antenna. I’d expect T-32C3 to be eventually found in the company’s smartwatches and development boards, and it joins other ESP32-C3 modules from AI Thinker. LILYGO T-32C3 module specifications: SoC – Espressif ESP32-C3 RISC-V processor @ 160 MHz with 400 KB SRAM, 384 KB ROM, 8KB RTC SRAM, 2.4 GHz WiFi 4, Bluetooth 5.0 LE & Mesh Storage – 4MB flash On-board PCB antenna I/Os – 22x castellated holes with GPIO, 3x ADC, SPI, UART, I2C, Boot, Reset, 5V, 3.3V, GND Dimensions – 23 x 11 x 3.5 mm (4-layer PCB) Note the USB interface is not listed in the specs, but USB DN and DP signals are located on GPIO18 and GPIO19 so USB should also be […]

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ESP32-C3 board comes with 16340 battery holder, D1 mini compatibility

It looks like ESP32-C3 floodgates have opened. We’ve just written about several NodeMCU ESP32-C3 boards, and now there’s another board with the RISC-V WiFI & Bluetooth processor. Meet LilyGo TTGO T-OI PLUS equipped with a 16340 battery holder. Getting a battery-powered ESP32-C3 board could prove to be very interesting as ESP32-C3 power consumption is much lower than ESP8266 and ESP32, notably in deep sleep mode, where the RISC-V processor consumes just 5uA, against 20 uA for ESP8266 and ESP32, and the difference is even greater in light sleep mode (ESP8266: 2000 uA vs ESP32-C3: 130 uA). LilyGo TTGO T-OI PLUS specifications: SoC – Espressif Systems ESP32-C3 single-core RISC-V processor @ 160 MHz with 2.4 GHz WiFi, Bluetooth 5.0 LE Storage – TBD flash (probably 2MB or 4MB) Antenna – Ceramic antenna and IPEX connector USB – USB-C port for power and programming Expansion 2x 8-pin headers with 12x GPIO, 1x […]

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LILYGO Mini E-Paper Core combines ESP32 with 1.02-inch ePaper Display in 3D printed enclosure

LILYGO Mini E-Paper Core is another ESP32-based e-Paper display by LILYGO, but it’s a really tiny 1.02-inch e-Paper display housed in a 3D printed enclosure that reminds me of M5Stack Core with a 2-inch TFT LCD. The tiny low-power display also offers a MicroSD card socket, a reset button, a three-way user button, as well as headers for GPIOs, ADC, DAC, SPI, and more.   LILYGO Mini E-Paper Core specifications: Wireless SiP – ESP32-PICO-D4 system-in-package with ESP32 dual-core processor, 4MB Flash, 2.4 GHz WIFi 4 & Bluetooth connectivity Storage – MicroSD card socket Display – 1.02-inch e-paper display with 128×80 resolution USB – 1x USB Type-C for power and programming Expansion 7-pin 2.54mm pitch header with 5x GPIO, 2x ADC, 2x DAC, 3.3V, and GND 8- pin 2.54mm pitch header with 4x GPIO, SPI, 1x ADC, 5V, VBUS, VBat, and GND Misc – Three-way toggle button connected to G36, G0, […]

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paperd.ink 4.2-inch ESP32-based e-Paper display ships with a 3D printed enclosure (Crowdfunding)

We’ve covered a fair amount of connected e-Paper/e-Ink displays based on ESP32 WiFi & Bluetooth SOC including several Inkplate displays, with the latest Inkplate 6Plus model including a touchscreen, TTGO T5 displays with small sizes, or even the fully enclosed M5Paper ESP32 IoT development kit with a 4.7-inch touchscreen e-Paper display. There’s also Watchy ESP32 smartwatch with a 1.54-inch display if you really need something small. But here’s another option courtesy of Rohit & Prasad, two young engineers from India, with the paperd.ink 4.2-inch ESP32-powered e-Paper display that ships with an optional 3D printed enclosure. paperd.ink display specifications: Wireless module – ESP32-WROOM-32 module with ESP32 dual-core processor, 4 MB SPI flash, 2.4 GHz WiFi 4 & Bluetooth LE connectivity Storage – MicroSD card slot for storing images, files, etc Display – 4.2″ monochrome e-Paper display with 400 x 300 resolution; 3s for full refresh; partial refresh supported USB – 1x […]

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