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Build a Do-It-Yourself Air Purifier for About $403:40

Build a Do-It-Yourself Air Purifier for About $40

2.3M views • 15 years ago
Michigan Medicine
A University of Michigan Medicine demonstration of building a cheap DIY air purifier from a box fan and a HEPA or high-MERV filter using hardware-store parts. It explains why this helps against dust, smoke and viruses and ties it to local air quality readings.
Neural Networks Demystified [Part 1: Data and Architecture]3:07

Neural Networks Demystified [Part 1: Data and Architecture]

838K views • 12 years ago
Welch Labs
The first of a short series by Welch Labs on building a complete neural network in Python. It introduces the data and the architecture of a simple network before later parts cover forward propagation, gradient descent, and backpropagation.
The Secret Life of components. A series of eight guides for designers and makers by Tim Hunkin3:01

The Secret Life of components. A series of eight guides for designers and makers by Tim Hunkin

83K views • 5 years ago
tim hunkin
The trailer for Tim Hunkin's series The Secret Life of Components, eight guides to mechanical and electromechanical parts for designers and makers.