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NodeMCU WiFi sync precision dot matrix clock

A Max7219 dot matrix clock always at right time. WiFi sync to Google servers.

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I was tired of battery clocks, which delays when the battery weakens. Problem solved with a digital clock that syncs itself via WiFi to Google's servers!

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Precision WiFi Sync Dot Matrix Clock

macbinary - 633.45 kB - 08/09/2018 at 23:28

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macbinary - 646.52 kB - 08/09/2018 at 23:28

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h - 11.30 kB - 08/09/2018 at 23:25

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h - 2.90 kB - 08/09/2018 at 23:25

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ino - 8.68 kB - 08/09/2018 at 23:25

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  • 1 × Nodemcu V3 $2.50 USD AliExpress / ebay
  • 1 × Max7219 Dot Matrix $3.50 USD AliExpress / ebay
  • 1 × 6vdc Power adapter $3.00 USD AliExpress / ebay
  • 1 × Hammond 1591D Polycarbonate Box $8.50 USD AliExpress / ebay
  • 7 × Dupont cables

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