Waveshare Launches an Affordable 7-Color e-Paper Display

Most e-paper displays are black or white with sometimes red or yellow color being added to the mix. But E-Ink has recently launched several color e-Paper display at prices that will not make it affordable to most projects. Waveshare has launched its fair share of e-Paper displays in the past, and now the company is coming with a relatively affordable 5.65″ color e-Paper display with seven different colors for $74.99 plus shipping. Main features and specifications: Display 5.65″ display (114.9 × 85.8mm) Resolution – 600 × 448 pixels Viewing angle – >170° ACeP (Advanced Color ePaper) 7-color with black, white, green, blue, red, yellow, and orange Greyscale – 2 levels Full refresh time – 15s Dot pitch – 0.1915 × 0.1915mm Host Interface – 3-wire SPI or 4-wire SPI Operating voltage – 3.3V/5V Power Consumption 50mW (typ.) during refresh Standby current – <0.01uA (almost none) Dimensions – Board – 138.5 × 100.5mm If the sample above is not photoshopped, the …

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FontEdit Font Editor Targets Embedded Systems with LED, LCD or e-Paper Displays

Once I had to use a Chinese TTF font in a project were storage was limited, and I managed to reduce the font size with FontForge open-source editor. It works well as long as your system support standard font formats like TrueType or OpenType, but on embedded systems with even fewer resources, it may not be workable due to the size of the font file, and the footprint of the required libraries. Instead, you may have to prepare the font in an image editor and convert those into code with a script and that can be cumbersome. So Dominik Kapusta decided to write a little tool to simplify the process. Meet FontEdit. The program allows you to import fonts, edit glyphs, and potentially add your own custom drawings.  It does have some limitations as it only works with general-purpose fixed-width desktop font and imports font glyphs for characters in the ASCII printable range (32…126 or 0x20…0x7e).  You can still add …

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Onyx Boox Nova 2 7.8″ eReader Runs Android 9.0

We wrote about reMarkable 2 10.3″ e-Paper Tablet running Linux a few days ago, but there’s now another option with Onyx Boox Nova 2 eReader equipped with a 7.8″ display and running an operating system based on Android 9.0. The device comes with an unnamed octa-core processor coupled with 3GB  RAM, 32GB storage, support for Wacom pen and touch input, and a 3,150 mAh battery. Onyx Boox Nova 2 specifications: SoC – Unnamed octa-core processor @ 2.0 GHz, but likely Qualcomm Snapdragon 625 found in the company’s Boox Max 3 eReader. System Memory – 3GB RAM Storage – 32GB flash, MicroSD card reader Display – 7.8″ E Ink Carta Plus inductive Wacom + capacitive touch screen with 1872×1404 resolution, 16 shades of grey, and the SNOW Field function to reduce artifacts during a partial refresh Frontlight – MOON Light 2 to use the device in the dark or under poor lighting conditions Connectivity – Dual-band 802.11b/g/n/ac WiFI 5 and Bluetooth …

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reMarkable 2 is a $399 e-Paper Tablet with Pressure Sensitive Pen

reMarkable digital notepad and e-reader was unveiled in 2016, and designed to feel like using actual paper sheets. The device came with a single-core Cortex-A9 processor, a 10.3″ E-Ink display with 1872×1404 resolution, and WiFi connectivity to backup your notes and/or drawings to the cloud or mobile phone. The company is now back with reMarkable 2 e-Paper tablet equipped with a faster and more efficient dual-core Cortex-A7 processor, 1GB RAM, a second-generation CANVAS 10.3″ e-Paper display with the same 1872×1404 resolution but lower latency. The second-generation e-Paper tablet also benefits from a thinner design and much-improved battery life. reMarkable 2 specifications: SoC – Dual-core Arm processor @ 1.2 GHz (possibly NXP i.MX 7Dual processor) System Memory – 1GB LPDDR3 RAM Storage – 8GB internal storage good for around 100,000 pages Display – 10.3″ monochrome digital paper “CANVAS” capacitive touch display partially based on E-Ink Carta technology with 1872×1404 resolution (226 DPI); 21ms latency Connectivity – Dual-band WiFi USB – 1x …

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4.2″ and 7.5″ NFC-powered e-Paper Displays Work without Battery

e-Paper displays have great readability under sunlight, and only consume power when updated. But their refresh rate is limited, and most displays are fairly expensive. One way to reduce the cost is to completely remove the battery from the display, and update it through NFC providing both data and power. I’ve just found out about that possibility through 4.2″ and 7.5″ displays offered by Waveshare. All you need is a compatible NFC smartphone, or the company’s ST25R3911B NFC Board to power the display and transfer your image of choice. This works best for signs you may need to infrequently update such as menus, daily schedules, conference badges, labels, etc… Waveshare NFC-powered e-Paper display key features and specifications: Screens 7.5″ display 800×480 resolution 2-level greyscale 170° viewing angle Refresh Time – 5s + data transfer time 4.2″ display 400×300 resolution 2-level greyscale 170° viewing angle Refresh Time – 4s + data transfer time Wireless Connectivity – NFC Power Supply – Wireless …

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Inkplate 6 ESP32 Wireless e-Paper Display Recycles Kindle E-reader (Crowdfunding)

Inkplate 6 wireless display is made from recycled e-Paper display taken from a used Amazon Kindle E-reader and adds WiFi (and Bluetooth) connectivity thanks to an ESP32-WROVER module featuring Espressif Systems ESP32 dual-core processor. The 6″ e-Paper display can easily be updated over WiFi, and used for a variety of applications or projects such as high-latency digital signage displays, collaborative task trackers, e-Paper typewriters, open-hardware E-readers, art projects and so on. Inkplate 6 specifications: ESP32-WROVER wireless module ESP32 dual-core Tensilica LX6 processor @ 240 MHz 8MB RAM, 4MB flash Connectivity – 802.11 b/g/n WiFi and Bluetooth 4.2 Display – 6″ e-Paper Display (ED060SC7) with 800×600 resolution taken from discarded Kindle readers; refresh time: 0.264 s; partial updates possible Storage – MicroSD card socket USB – 1x Micro USB Port for power and programming (via CH340C) Expansion EasyC / Qwiic connector with I2C Headers for power signals, I2C, SPI, ESP32’s GPIO, and MCP23017 I2C I/O expander Sensor – Internal TPS65186 temperature …

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TTGO T5 is an ESP32 WiFi + Bluetooth Board with ePaper Display and Speaker

Lilygo has made another ESP32 board part of their TTGO family with TTGO T5 board powered by Espressif System ESP32 WiFI & Bluetooth SoC, and offering a choice of ePaper displays from 1.54″ to 2.3″, as well as built-in speaker. TTGO T5 board specifications: SoC – Espressif ESP32 dual core Tensilica LX6 processor with WiFi 802.11 b/g/n and Bluetooth 4.1 LE Storage – micro SD card slot Display (one of the other) 1.54″ 200×200 black & white ePaper display; Full refresh time – 2 seconds 2.13″ 250×122 black & white ePaper display; Full refresh time – 2 seconds 2.7″ 264×176 black & white ePaper display; Full refresh time – 6 seconds 2.9″ 296×128 black & white ePaper display; Full refresh time – 2 seconds Viewing angle – >170° Power Consumption – Refresh: 26.4mW(typ.); standby: <0.017mW Connected via SPI interface Audio – Mini Speaker Expansion – 24-pin header with GPIO, UART,  speaker +/-, VP/VN, VBAT, 3.3V, GND Misc – 3x user …

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WeLoop Hey 3S Sports Smartwatch Review – Part 2: GPS, Running, Cycling, Notifications, and More

WeLoop-Hey-3S-Review

As mentioned previously I did not have such good luck with smart wearables so far, with disappointing products often with a short lifetime (a few weeks to a few months, and some design issues here and there like an e-Paper display without backlight, a touchscreen display with poor locking mechanism (so it’s activated while taking a shower), unreliable heart rate monitor, poor waterproofness and so on… My main requirements are always-on display, battery life as long as possible, notification support, good waterproofness to do tasks like taking shower or swim without having to remember to remove the watch, among others less important requirements. I mostly gave up on the category for about year, but decided to give it a try when GeekBuying asked me if I was interested in reviewing WeLoop Hey 3S sports smartwatch.  Maybe things have improved since then. I’ve already gone through unboxing and initial setup in the first part of the review entitled “WeLoop Hey 3S …

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