ESP8266 5V adapter

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2 layer board of 0.85x1.56 inches (21.62x39.70 mm).
Shared on March 3rd, 2016 16:45.

Facilitates use of ESP8266 with 5V system. Eagle files on GitHub at https://github.com/CBMalloch/Hardware/tree/master/ESP8266_daughter_board

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Led Display 4dig

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2 layer board of 1.69x1.30 inches (42.85x33.02 mm).
Shared on February 25th, 2014 14:18.

LED 4-digit display using MAX7221 / SPI

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2 layer board of 1.84x1.40 inches (46.69x35.56 mm).
Shared on February 25th, 2014 14:18.

Arduino for hot tub monitoring

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2 layer board of 1.75x1.50 inches (44.48x38.13 mm).
Shared on February 25th, 2014 14:14.

POE and RS-485

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