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Bike Bar Lights LED test

Here is as short video that shows a test of LED strips on a bike frame.

I am planning to cover the tubes in a shrink wrapping material to make the project more waterproof.

Disco Bike - Radio test

This is a test of a cheap 433Mhz transmitter and reciever from SparkFun electronics. Together they cost only $7 for the pair. I did a test with two arduinos one transmitting data and the other recieving, both outputing over serial to debug. The fidelity seemed pretty good (Although it was only short range ~1m) without an antenna. This video shows a test using the musical output of the computer which is sent to an anolog pin on the arduino. The Arduino reads the voltage and sends a byte to the transmitter. The receiver on the other end then pulls that value in and is SUPPOSED to adjust the brightness of the LEDs accordingly.

Unfortunately, the signal is two noises causing the value to fluctuate wildly. The instability also means that the LEDs are on for a very short period so its difficult to see the lights change their state.




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PCB Fabrication

A pcb made with a router at the Santiago MakerSpace

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Embedded Bike Lights + ATTiny = More Flashiness

I have been slowly working towards a mobile bike light show. The most recent step in that project has been to create a small PCB that I can place inside the wheel with an MCU that will be able to control the flashing of the lights.

I have already done several prototypes of such a board. Here is video of the different modes I have programmed in. Sorry that LEDs dont glow very brightly. I was VERY conservative with the current limiting resistor because I didn't want to risk blowing any (they would be a pain to replace). The power supply is putting out around 200mA but it could be closer to 400mA.

Video of Santiago Makerfaire (featuring me (for over 2 seconds)).

Fundamentals of EE on Coursera

So frustrating!