Inkplate 6COLOR
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Inkplate 6COLOR – A 5.8-inch e-paper color wireless display (Crowdfunding)

Inkplate 6COLOR is a 5.8-inch color e-paper display equipped with ESP32 WiSoC to provide WiFi and Bluetooth LE connectivity, and programmable with the Arduino IDE or MicroPython. We’ve covered Inkplate ESP32-based e-paper displays since Inkplate 6 was launched in 2019, and since then the company introduced a larger model and an upgraded variant with a touchscreen display and higher resolution. But so far, all were grayscale models, and Inkplate 6COLOR is the first to come with color, or more exactly 7 colors. Inkplate 6COLOR specifications: Wireless module with dual-core ESP32 processor, Wi-Fi 4 & Bluetooth 4.0 (BLE) connectivity External storage – MicroSD card socket Display  – 5.8-inch, 600 x 448 e-paper display with 7 colors (Black, White, Red, Yellow, Blue, Green, Orange) 128 DPI 25 seconds refresh time (manufacturer); tested by Inkplate: 10 to 11 seconds USB – 1x USB Type-C port for programming and power Expansion – Headers for […]

Newt ESP32 IoT Display
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Newt 2.7-inch wireless display offers high refresh rate with SHARP’s Memory-in-Pixel (MiP) technology (Crowdfunding)

Newt is a battery-powered, always-on, ESP32-S2 wireless display with a 2.7-inch display leveraging SHARP’s Memory-in-Pixel (MiP) technology to provide an experience similar to E-Ink displays but with a much faster refresh rate. The wireless display can connect to the Internet to retrieve weather, calendars, sports scores, to-do lists, quotes, and whatever you’d like. Since it is powered by an ESP32-S2 microcontroller you can program with the ESP-IDF framework, Arduino, MicroPython, or CircuitPython. Newt display specifications: WiFi module – Espressif ESP32-S2-WROVER module with ESP32-S2 single-core Xtensa LX7 processor @ 240 MHz with 4 MB flash and 2 MB PSRAM Display – 2.7-inch, 240 x 400 pixel SHARP MiP LCD with “high-contrast, high-resolution, low-latency content with ultra-low power consumption”, reflective mode to eliminate the need for a backlight. USB – 1x USB Type-C port for programming, power, and charging Expansion – I2C Qwiik connector Misc Micro Crystal RV-3028-C7 RTC (45nA power consumption) […]

ArmSoM RK3588 AIModule7 NVIDIA Jetson Nano-compatible SOM
paperd.ink ePaper Display
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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 […]

HEGduino V2 headband
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HEGduino V2 supports fNIRS and Blood-Flow Monitoring (Crowdfunding)

AlasKit has launched a crowdfunding campaign on Crowd Supply for HEGduino V2. The device features noninvasive optical imaging through fNIRS (Functional near-infrared spectroscopy), apart from its brain blood flow monitoring functionality. We saw the previous version of the HEGduino in September 2019 which only supported blood flow monitoring. But the HEGduino V2 also monitors breathing, heart rate, and skin temperature. HEGduino V2 has a MAX86141 optical pulse oximeter cum heart-rate sensor for incorporating Heart Rate Variability (HRV) training. It also allows breath and skin temperature monitoring. The sensor has a specification of 2×4096 SPS sensing with a 19-bit resolution which is a bit higher than its previous version. As HEGduino V1 had an 860 SPS sensing with a 16-bit resolution. However, the practical application observes even lesser values for HEGduino V1. Setup of HEGduino V2 The device also comes with an ESP32 breakout board with rechargeable battery support. The board […]

Raspberry Pi Pico with OLED display, 18650 battery
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Quad GPIO Expander for Raspberry Pi Pico adds battery, display module, sensors, etc…

People are normally using MCU boards for their low cost, low-power consumption, low price and/or real-time ability. The Raspberry Pi Pico is no exception, but if you don’t care about using a large board, Waveshare created a 177 x 62 mm “expander” board for the Raspberry Pi Pico that can take four modules. The company’s Quad GPIO Expander board includes a set of female headers for RPi Pico, and four sets of 2×20 male headers for extra modules that bring support for 14500 batteries, OLED displays, RTC, relays, and other compatible modules. The expansion board also has a Micro USB port for power, and to leave the Micro USB OTG port on the Raspberry Pi Pico for other purposes. Each header pin is clearly labeled, which could be useful if using some of the pins with jumper wires instead of modules. Waveshare has hundreds of different modules and somehow decided […]

tri color E-Ink display for Wemos-D1 mini ESP8266 board
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Tiny Tri-color E-Ink display for Wemos D1 Mini board sells for $10

Wemos D1 Mini is one of my favorites ESP8266 boards with a cheap price, tiny form factor, and support for stackable expansion boards. Lolin has now launched a small 2.13-inch tri-color E-Ink display that is compatible with D1 mini, D1 mini Pro, and D32 Pro boards, and sells for just $9.90 plus shipping. Specifications: 2.13-inchTri-Color (red/black/white) ePaper/e-Ink display with 212×104 resolution Driver IC – Good Display UC8151D Connection to D1 mini, D1 mini Pro, D32 Pro via 10-pin connector Debugging – 8-pin unpopulated header with EPD signals (SPI, Reset, Busy…) 3.3V, GND You may wonder why the PCB reads “2.13 INCH e-Paper 250×122”, while the resolution is 212×104. That’s because the company probably reused the PCB from their 2.13-inch black and white e-Paper display with 250×122 resolution (IL3897 driver). The display can be programmed with Arduino using LOLIN_EPD, Adafruit_GFX, and Adafruit_BusIO libraries as explained in the Wiki. You’ll find three […]

Rockchip RK3568, RK3588 and Intel x86 SBCs and SoMs in 2025
Rotary Un-Smartphone
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Rotary Un-Smartphone is a rotary dial phone based on Arduino, 4G LTE module

If you feel nostalgic and misses the days of the rotary dial phone, Sky’s Edge “Rotary Un-Smartphone” is an open-source hardware rotary dial phone controlled by an Arduino board and equipped with a multi-mode 4G/3G/2G module. It’s a bit more advanced that you old rotary phone with recent cellular technology, ePaper & OLED displays, quick dialing buttons, and the rotary dial can both be used to dial full phone number or quickly access your contact list. Key features of the Rotary Un-Smartphone: MCU board – Arduino board based on AtMega2560 MCU Storage – MicroSD card to store contacts list Displays – Front-side OLED and back-side ePaper displays Cellular Connectivity 4G/3G/2G connectivity via u-Blox TOBY-L2 module Voice calls and SMS (receive-only) supported SIM card slot Internal antenna; expansion space for user-supplied external antenna Audio Microphone and speaker 3.5mm TRRS headset jack Mechanical ringer bell made from polished brass; externally visible Misc […]

Inkplate 10
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Inkplate 10 ESP32 e-Paper display offers faster refresh rates (Crowdfunding)

Inkplate 6 is an ESP32 powered wireless e-Paper Display based on a recycled  Kindle E-reader display, and that e-Radionica launched in December 2019 via a crowdfunding campaign. The company says backers were “happy about the versatility and simplicity of the display” but wished for a larger display, a faster refresh rate, and extra features. This gave birth to an upgraded version: Inkplate 10. The new ESP32 wireless display comes with a recycled 9.7-inch display with 1200 x 825 resolution, up to 38% faster refresh rates, as well as extra GPIO pins, an RTC clock, a USB Type-C port, and lower power consumption. Inkplate 10 specifications: Wireless module – ESP32 WROVER module with dual-core ESP32 processor with Wi-Fi & Bluetooth 4.0 (BLE) connectivity, 8MB PSRAM, 4MB flash External storage – MicroSD card socket Display  – 9.7-inch, 1200 x 825 e-paper display with support for grayscale, partial updates, and quick refresh cycles: […]

Boardcon CM3588 Rockchip RK3588 System-on-Module designed for AI and IoT applications