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Why e-paper displays are perfect for use in parking meters

Wednesday, November 29, 2017
Why e-paper displays are perfect for use in parking meters E-paper screens are sunlight-readable, have a wide viewing angle and are ultra-low power making them the ideal display choice for outdoor applications By Scott Soong, CEO, Pervasive Displays Virtually every town and city in the world is home to tens, if not hundreds or even thousands of parking meters with digital displays. Some designs haven’t changed for decades, with their simple, traditional numeric liquid crystal displays (LCDs), like those found in pocket calculators. Other manufacturers use back-lit TFT LCDs in their meters – similar to the ones in our laptops and smartphones – to enable them to display richer, more complex information. But with the maturing of e-paper technology – commonly found in e-book readers such as the Amazon Kindle – there’s now a new and better way to present visual information on these parking meters. E-paper: Ideal for parking meters  ..

Adding a low power display to a Maker project

Tuesday, November 07, 2017
Adding a low power display to a Maker project By Hardy Kuo, Field Applications Engineer, Pervasive Displays Have you ever thought how great it would be if you had a sign on your front door that said ‘Hello’ just as you approached to put your key in? Or you could see if you should take an umbrella to work with you, just by looking at your coffee table? Or you knew if you were running low on sugar just by glancing at the closed cupboard door? If the answer to any of these questions is ‘Yes’ then you’re probably already a Maker. If it’s ‘Yes please!’ then you’re a Maker in the making and you might just be looking for e-paper displays. Accessing technology for your project The number of single-board computer modules available to Makers is on the increase. Platforms like the Raspberry Pi (https://www.raspberrypi.org/) family give everyone access to technology that, not so long ago, would only have been available to lar ..

Why e-paper displays will run for 22 years in coin cell powered IoT applications

Wednesday, November 02, 2016
Why e-paper displays will run for 22 years in coin cell powered IoT applications? By Scott Soong, CEO, Pervasive Displays You’ve carefully selected your sensor, found the lowest power MCU for your battery-powered IoT application, optimized your code to minimize energy consumption and chosen the lowest power wireless solution to send packets of data where they need to go. Now you want to figure out how to add a display to your application without completely trashing the power budget. That’s the challenge faced by many IoT product designers, for example those designing remote meters or smart tags. If they think only in terms of dot matrix displays, it’s a challenge they’ll struggle to overcome. Let’s assume that you want your display to operate for five years with CR2032 coin cell batteries as the power source. These have a typical stated capacity of 220 mAh, from which we might reasonably assume a nominal real-world operating capacity of 88% ..