Just a quick update on the Sleepduino project: the PCBs for the Sleepduino Shield and Standalone Sleepduino arrived from the fab yesterday, and they work a treat.

Here’s a quick comparison between the Standalone Sleepduino and its breadboarded prototype:

Sleepduino Standalone Final/Prototype Comparison

As you can see, the Standalone Sleepduino is pretty compact, but still packs all the features of the original Arduino-powered version. In fact, it’s possible to take the (socketed) microcontroller out of the Sleepduino and upload a revised sketch, if you’ve got an ATtiny or similar or a spare Arduino to do the programming.

Just in case you doubt it works:

Standalone Sleepduino Working

At some point, I’ll be making a few tweaks to the design and then exporting some Gerbers for mass-production. Once I’ve got a costing for the PCB fabrication and parts – a 10K poteniometer, piezoelectric buzzer, three RGB LEDs, three buttons, nine 270-Ohm resistors and an ATMega-328 with socket – I’ll have a better idea of whether the project is worth pursuing.

2 thoughts on “The Standalone Sleepduino lives!

  1. How much is a Sleepduino Shield? I’m interested, and would like to know how well they worked. Thanks.

  2. I actually only produced a single shield, and don’t really have a price. At a guess, you’d be looking at around £20 including all parts – although that’s based on getting ten PCBs made.

    As for how well it works, my daughter seems to sleep better with the Sleepduino active (default white noise frequency, two of the three LEDs lit on yellow) than without – although I’d be the first to admit it’s hardly a scientific test.

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