[Andrew Lamchenko], who has built a number of small e-ink-based sensors this year, released another design called the eON Indoor Air Quality Sensor. As his previous sensor designs, the eON boasts a ...
Buy Oil Pressure Sending Unit Tool Set 7-Piece O2 Sensor & Oil Pressure Sending Unit Socket Set - Master Sensor Tool Kit ...
Colombian citizen scientists built dirt-cheap air quality monitors and deployed them across their city, forcing the government to confront its pollution. Now they’re teaching others to build them, too ...
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