by krtkl

A palm-sized, reconfigurable Linux computer that connects to the real world: ARM + FPGA + Wi-Fi + Bluetooth + 180 I/O

View all updates Dec 16, 2016

Production "progress" & cookieJar news

Hello snickerdoodlers,

Two more weeks in the books, another wave of ridiculous issues and delays… The latest culprit: PCBs.

As it turns out, not only did the onshore fabrication house – run by one of the largest PCB manufacturers in the world – experience some never-before-seen quality issues with the Rev. 4 fabs (as in, a ~66% failure rate due to a “registration" issue between the clear and matte black soldermasks, resulting in electrical shorts on the boards) turning what was supposed to be a one-week turn into four weeks…and counting, but the offshore fabs were likewise delayed a couple more weeks.

Not only that, even the PCBs that “passed” are being rejected on our end for inconsistencies in the soldermask around the BGAs and other fine-pitch pads. If you’re itching for more of the nitty gritty, see the following corrective action report:

Anyway, the new plan is to receive the 500 ‘re-run' fabs on Monday (12/19), which means we’d have first articles available by the end of NEXT week… We’ll test these, then let the CM loose on slamming out the balance – this of course assumes the fabs we receive on Monday are actually good and all tests pass with flying colors. As you can probably guess, all this makes the likelihood of anyone having a snickerdoodle deployed down their chimney by a fat man in a red suit before/on December 25 rather unlikely. :(

Needless to say, this whole situation has become almost comical. Or at least it would be comical if it wasn’t so infuriatingly frustrating and exacerbating.

Not that it’s any consolation, but on a more positive note: we’ve revamped the cookieJar snickerdoodle enclosure. Instead of injection molding these – which is both overly costly at low volumes and, honestly, pretty lame – cookieJar will now be machined out of 6061 aluminum, bead blasted, anodized, and laser engraved – check out the renderings below.

You’ll notice we eliminated the heat sink cutout. That’s because it's been replaced with an internal boss + thermal pad so the enclosure will now act as the heat sink! There are four countersunk mounting holes in the base if you want to strap this thing to whatever you’re driving/flying around… We’ll provide the screws.

The price will be higher ($65 vs. $25) but nothing says “I’m a bad a$$” like showing off your snickerdoodle in a precision-machined, billet aluminum enclosure (except for maybe a stainless steel enclosure, but that seemed a tad overkill…and really heavy).

Note: For those who’ve already ordered a cookieJar, you’ll need to confirm via email before 1/31/17 (at that you’d like to be upgraded to the new machined enclosure. There will be a one-time, $25 charge ($50 total) for the upgrade. If we do not hear from you by 1/31, YOUR COOKIEJAR ORDER WILL BE CANCELLED AND REFUNDED.

As far as manufacturing and shipping these, we don’t expect there to be some massive global shortage of aluminum – although it wouldn’t surprise us at this point – so we might actually be able to deliver these “on time” (or at least whenever the snickerdoodles are finally done).

We’ll be writing up some massive ‘postmortem’/‘lessons learned’ post at some point to share all our trials and tribulations – as well as some advice for others considering such an absurd endeavor. We’ll hold off on that for now, as something tells us there are still some more “lessons” to be learned (i.e. a few more people lining up to kick us in the ribs).

That’s all for now. We’ll get another update out next week (hopefully with some pictures of freshly baked Rev. 4s). Looking forward to working through the holidays...

Until next time,

the krtkl crew

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Product Choices


Snickerdoodle Black (Connectors Up)

Dual-Core 866 MHz ARM Cortex-A9 w/1.3M ASIC gates, 180 reconfigurable I/O, 1GB LPDDR2 RAM, 2.4GHz + 5GHz 802.11n 2x2 MIMO Wi-Fi, Bluetooth Classic & BLE, copperHead heat sink, free SDSoC license.


Snickerdoodle Black (Connectors Down)

Dual-Core 866 MHz ARM Cortex-A9 w/1.3M ASIC gates, 180 reconfigurable I/O, 1GB LPDDR2 RAM, 2.4GHz + 5GHz 802.11n 2x2 MIMO Wi-Fi, Bluetooth Classic & BLE, copperHead heat sink, free SDSoC license.


Snickerdoodle One

Dual-Core 667MHz ARM Cortex-A9 w/430K ASIC gates, 155 reconfigurable I/O, 512MB LPDDR2 RAM, 2.4GHz 802.11n Wi-Fi. Only available with connectors up (benchtop).


breakyBreaky breakout board

Full snickerdoodle pinout (270 pins) on 0.1” headers, JTAG connector, DC power jack. Note: order your snickerdoodle connectors "down".


piSmasher SBC

HDMI in AND out, 2x Gigabit Ethernet, 4x USB 2.0 high-speed, audio line in/out, headset, 25 reconfigurable I/O, DC power jack. Note: order your snickerdoodle connectors "down".


12V/36W International Wall Wart

36W/12V wall-mount power supply for use with snickerdoodle baseboards.


cookieJar enclosure

A beautiful enclosure machined out of 6061 aluminum, bead blasted, anodized, and laser engraved. Also serves as heat sink. Note: this enclosure is only compatible with connectors “up” snickerdoodle.


pin housings + jumpers

All seven mating snickerdoodle connectors and a 50-pack of (loose) jumpers - see below for jumper description for benchtop-prototyping; no baseboard needed.


32GB microSD card (pre-loaded)

32GB U3 Speed Class microSD card pre-loaded with snickerdoodle Ubuntu Linux.


ten sets of baseboard headers

Ten sets of all seven connectors needed for building your own snickerdoodle baseboard; mates with snickerdoodle connectors “down”.



Ryan Cousins

Jamil Weatherbee

Russell Bush


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