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darrenparkinson.uk | ||
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hack.org
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electronut.in
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| | | | | The HC-SR04 works as follows: Send a 10us HIGH pulse on the Trigger pin. The sensor sends out a sonic burst of 8 cycles. Listen to the Echo pin...Read More | |
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infinitedigits.co
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| | | | | I make a Raspberry Pi powered alarm clock for alerting about auroras. | |
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st4rk.net
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