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Retro is in every single place, from the runways to the malls. Whenever you pull one thing new off the rack chances are fairly good it is a twist on one thing previous, and folks like it: Katherine Hepburn’s high-waist, drapey broad-leg trousers minus the pleats; 1980s skinny denims in modern coloration washes; ’70s platforms now supporting shoeties and strappy stilettos.

How costly is it to make a panel that uses e-ink expertise? That might depend upon how versatile you’re. [RBarron] examine reverse engineering level-of-sale shelf labels and located them on eBay for just over a buck apiece. Next factor you know, 20 of them were working together in a single panel.

­It begins with a ardour for antiques. After years of gathering, many individuals realize that they’ve extra antiques than their dwelling can hold. Or they develop an interest in a unique type of antiques. That is when they decide to sell part of their own collection. This small start turns some antique collectors into antiques sellers.

Each the “datasheet” and the antennas on the board make it clear that this chip works on the 2.4GHz frequency band. In that 2.4GHz band, 802.15.4 prescribes utilizing QPSK modulation at 250Kbps, with a 5MHz channel spacing. The QPSK part is tough. Most low cost radio chips help ASK/OOK, FSK and eink display kit GFSK. QPSK help is uncommon. Wanting around my lab, choosing up random radio-succesful things, and checking for what they assist, I rapidly arrived on the nRF52840 Dongle. It, allegedly supports ZigBee, and thus should be able to this modulation. A quick learn of the documentation revealed that it’s. It took a day or so to put together some code to squirt packets of the correct format out into the air, and … nothing.