loading

Holiday cards that blink and beep have always fascinated us. This is our hackable DIY version made with an ATtiny13A and a few LEDs - push the button to play a short light show in the tree. We're sending these to friends and family this year. It's a handmade, hackable gift, and it was a ton of fun to build. This instructable explains our design, then you can grab the open source files and build your own.

The card is also an homage to Velleman's blinking Christmas tree ornament kit, and a kit-biz reference to the Adafruit Promise. (Did you know Velleman has a nixie tube clock kit? Really!)

You can buy a copy of our card at Seeed Studio. Assembled cards are ($15), and a kit for adventurous solderers is $12.

You can also see this article with the original formatting at DangerousPrototypes.com.


 

Step 1: Hardware - ATtiny13A

The schematic and PCB were made with the freeware version of Cadsoft Eagle. Download the latest design files and firmware on the project Google Code page.

AVR ATTINY-13A

A small ATMEL ATtiny13A microcontroller (IC1) is the brain of the circuit. One pin (PWM) blinks the lights, most of the other pins are used for programming and power. You could get similar effects with a 555 timer or discrete components, but our goal is to learn about a new microcontroller family and make something easy to hack.

The ATtiny needs a 10K pull-up resistor (R1) to hold the reset pin high, a mini tactile switch (S1) resets the ATtiny by temporarily connecting the reset pin to ground. A 0.1uF capacitor (C1) decouples the chip from the power supply.

<p>I am interested in buying a kit but the link did not work.</p>
Thanks! Very Cool
We have XMAS bells and Trees!!!<br /> <br /> <style type="text/css"><![CDATA[p.MsoNormal, li.MsoNormal, div.MsoNormal { margin-top: 0.0in; margin-right: 0.0in; margin-bottom: 8.0pt; margin-left: 1.5in; line-height: 120.0%; font-size: 10.0pt; font-family: Calibri , sans-serif; color: rgb(90,90,90); } a:link, span.MsoHyperlink { font-family: Times New Roman , serif; color: blue; text-decoration: underline; } a:visited, span.MsoHyperlinkFollowed { color: purple; text-decoration: underline; } *.MsoChpDefault { font-size: 10.0pt; } *.MsoPapDefault { margin-top: 0.0in; margin-right: 0.0in; margin-bottom: 8.0pt; margin-left: 1.5in; line-height: 120.0%; } div.Section1 { page: Section1; } ]]></style> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">VK Electronics is a Canadian run group in the heart of Shenzhen, China.<span style="">&nbsp; </span>Please see our website at </span><b><span style="font-size: 12.0pt;font-family: Arial , sans-serif;color: windowtext;"><a href="http://vkelectronic.freei.me/" rel="nofollow"><span style="">http://vkelectronic.freei.me</span></a> )</span></b><span style="font-size: 12.0pt;font-family: Arial , sans-serif;" /></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">&nbsp;</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">We have a showroom on the 31st floor of the Bank of China Gardens (in the heart of Shenzhen), and welcome serious buyers.</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">&nbsp;</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">Our staff is highly competent and professional; all have many years experience working for foreign companies.</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">&nbsp;</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">&nbsp;</span></p> <div style="border: 1.0pt solid windowtext;padding: 1.0pt 4.0pt;margin-left: 1.5in;margin-right: 0.0in;"> <p align="center" class="MsoNormal" style="text-align: center;line-height: normal;border: medium none;padding: 0.0in;"><b><span style="font-size: 12.0pt;font-family: Arial , sans-serif;background: none repeat scroll 0.0% 0.0% yellow;">We source, design, supply, and ship quality electronics.</span></b><b><span style="font-size: 12.0pt;font-family: Arial , sans-serif;" /></b></p> </div> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">&nbsp;</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">&nbsp;</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">Our primary line is </span><b style=""><span style="font-size: 14.0pt;font-family: Arial , sans-serif;">LED lighting</span></b><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">, with VERY strong support to solar, PC and IT related products.</span></p> <br />
We have XMAS bells and Trees!!!<br /> <br /> <style type="text/css"><![CDATA[p.MsoNormal, li.MsoNormal, div.MsoNormal { margin-top: 0.0in; margin-right: 0.0in; margin-bottom: 8.0pt; margin-left: 1.5in; line-height: 120.0%; font-size: 10.0pt; font-family: Calibri , sans-serif; color: rgb(90,90,90); } a:link, span.MsoHyperlink { font-family: Times New Roman , serif; color: blue; text-decoration: underline; } a:visited, span.MsoHyperlinkFollowed { color: purple; text-decoration: underline; } *.MsoChpDefault { font-size: 10.0pt; } *.MsoPapDefault { margin-top: 0.0in; margin-right: 0.0in; margin-bottom: 8.0pt; margin-left: 1.5in; line-height: 120.0%; } div.Section1 { page: Section1; } ]]></style> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">VK Electronics is a Canadian run group in the heart of Shenzhen, China.<span style="">&nbsp; </span>Please see our website at </span><b><span style="font-size: 12.0pt;font-family: Arial , sans-serif;color: windowtext;"><a href="http://vkelectronic.freei.me/" rel="nofollow"><span style="">http://vkelectronic.freei.me</span></a> )</span></b><span style="font-size: 12.0pt;font-family: Arial , sans-serif;" /></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">&nbsp;</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">We have a showroom on the 31st floor of the Bank of China Gardens (in the heart of Shenzhen), and welcome serious buyers.</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">&nbsp;</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">Our staff is highly competent and professional; all have many years experience working for foreign companies.</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">&nbsp;</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">&nbsp;</span></p> <div style="border: 1.0pt solid windowtext;padding: 1.0pt 4.0pt;margin-left: 1.5in;margin-right: 0.0in;"> <p align="center" class="MsoNormal" style="text-align: center;line-height: normal;border: medium none;padding: 0.0in;"><b><span style="font-size: 12.0pt;font-family: Arial , sans-serif;background: none repeat scroll 0.0% 0.0% yellow;">We source, design, supply, and ship quality electronics.</span></b><b><span style="font-size: 12.0pt;font-family: Arial , sans-serif;" /></b></p> </div> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">&nbsp;</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">&nbsp;</span></p> <p class="MsoNormal" style="line-height: normal;"><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">Our primary line is </span><b style=""><span style="font-size: 14.0pt;font-family: Arial , sans-serif;">LED lighting</span></b><span style="font-size: 12.0pt;font-family: Arial , sans-serif;">, with VERY strong support to solar, PC and IT related products.</span></p> <br />

About This Instructable

16,643 views

39 favorites

License:

More by ian: Thermal Tweeter networked Twitter printer @tweet_tree: Twitter controlled Christmas tree Hackable Christmas card & ornament
Add instructable to: