RE: 10 BBC micro:bit Projects in 10 Days: Day One - Flashing Heart

jpnbino — Mon, 18 Dec 2017 23:06:59 GMT

Very nice,

I don't have a microbit board and I'm already coding. So delightful [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-961e93c5-b7f8-4544-9521-3ef2fef4e98e/contentimage_5F00_1.png:16:16]

Kids can learn sooo easily and fall in love with electronics.

RE: 10 BBC micro:bit Projects in 10 Days: Day One - Flashing Heart

Instructorman — Mon, 13 Jun 2016 20:36:16 GMT

This is a good project in that it inspires the learner to create an interesting visual effect. That helps motivate learners because most people like the feeling of accomplishment when they succeed in making lights blink.

To further develop coding and algorithm writing skills, while sustaining the interesting visual effect theme, I recommend a project that takes advantage of human persistence of vision. I used an MSP430 development board with a single row of LEDs to flash a sequence of coded light patterns. When the board is moved rapidly in a dark room, the flashed patterns create a dot matrix on the retina that lasts long enough to be perceived visually as words. See the example image below.

[View:/resized-image/__size/200x150/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-961e93c5-b7f8-4544-9521-3ef2fef4e98e/contentimage_5F00_190492.png:200:150]

The yellow streak above the text is caused by the power LED, which is on constantly. I passed the MSP430 in front of the camera in a darkened room while the program was running. The exposure was set to 1/4 second.

This project needed about a dozen lines of code and a look up table of dot patterns (to form letters and numbers) . It should be quite easy to achieve a similar result using the BBC micro:bit.