Holyshit u guise, it worked! Finally getting back to it after the Christmas break.

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Holyshit u guise, it worked!

Finally getting back to it after the Christmas break. This circuit runs off 12V. The pushbutton is connected to an Adafruit “soft” power switch (https://www.adafruit.com/product/1400) which turns on the juice to the RFduino and 74HCT245N via 3V3 and 5V regulators, respectively.

The code on the RFduino then flashes the LED on the button to say “Yeah I heard ya, I’m bootin’ up here!” before it turns on the (12V) power to the strips through a beefy P-FET (FQP27P06) via an ICL7667 driver. We then cycle through the hues a few times, flash the indicator LED to wave goodbye, then turn off the 12V to the strip, before finally kicking the stool out from under ourselves by driving the Adafruit soft power switch’s “kill” pin high.

With the strip power under software control we can avoid the “dark draw” from ~200 LEDs when the RFduino determines this bike-mounted project has stopped moving.

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Nice work mate!

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since this is bike mounted, whats the power source going to be? =]

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Nicely done, I like that.

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@Randal_B That is a good question, and I haven’t got any further than “some kind of ~12V LiPo or LiFePo4 battery”.

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My question is “What kind of bike is it?” I ride a bike (the kind with pedals) with LEDs on it and for special occasions (Critical Mass) use neopixel strings I have some friends who have more “permanent” installations. I’d like to see a picture when it’s done.

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This is for my bakfiets, aka the “Dad Rad”; there’s plenty of carrying capacity. In fact I could even use an SLA battery if I wanted to, you wouldn’t notice an extra couple of kg on a 55kg bike. I’ll definitely post pictures when it’s all done!