186

247

0

1

It tells you the time with RGB leds, already working on a talking version that also moves the hands

3.8k

2.8k

0

1

This boombox sounds pretty loud. 2x50 W speakers running on DIY 18650 Li-Ion battery pack salvaged from old laptop batteries. In a wine box.

79

82

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4

An improved version, PCB-based

5

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0

How to build your own 18650 battery pack from scrapped laptop batteries, with built-in balance charger and protection circuit

104.5k

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75

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Follow for the 'Hacklet' and latest news about hackaday.io

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320

23

283

Making my own automatic chessboard

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437

1

35

DIY Hifi Phono Stage

19.8k

794

10

124

Minimalist desk clock based around Russian Nixie tubes.

19.2k

64

6

60

A modern DC/DC converter design capable of delivering current in excess of 40mA at 170V

13k

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9

117

An array of cosmic ray detectors across a landscape that demonstrates in light and sound how cosmic rays are constantly all around us.

4.8k

450

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50

A matrix of cosmic ray detectors which produces 81-pixel live images as cosmic rays pass through and creating music.

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15

5

14

An Arduino based analog volt meter clock.