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 Jul 19, 2017

In Search of Yield Issue Root Cause


Quick update on what’s been happening with snickerdoodle:

Work continues on establishing the root cause of this ridiculous manufacturing yield issue. We have been around and around with Xilinx support, our contract manufacturer, and our parts vendors…discovering seemingly promising evidence at every step along the way that ultimately turns up a dead end. Days, weeks, and months of troubleshooting, testing, reworks, and reworks of reworks have left us continuing our search.

The one “reassuring” aspect of an otherwise dumbfounding situation is both the failure AND the remedy are very specific to the Zynq and very repeatable - unfortunately the ‘remedy’ can’t be practically implemented in shipped product, so we really need to figure out what is causing the problem.

piSmasher is progressing, although snickerdoodle has taken a front seat.

In both cases, it is a matter of “when,” not “if” we will get these issues resolved and (finally) move everything to volume production. We kindly ask that you bear with us a little bit longer. Please also understand this is an extremely stressful situation for everyone involved. We are more eager than anyone to get back to building & shipping product and we are working day and night to make that happen.

As always, if you’d like to contact us, please email us or tweet us at @krtkl_inc and we’ll get back to you as soon as possible.

Kind regards,
the krtkl crew

$348,940 raised

of $55,000 goal

634% Funded! Order Below

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.


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.


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.


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.


32GB microSD card (pre-loaded)

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


baseboard headers

All seven connectors needed for building your own snickerdoodle baseboard; mates with snickerdoodle connectors “down”.


ten sets of baseboard headers

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



We’re a collection of electrical, mechanical, and software engineers based out of San Francisco. With decades of experience in embedded systems, real-time controls, and robotics, we’ve worked on everything from medical devices to consumer electronics. With the mindset that no detail is too fine and “good enough” never is, we live for building products people love and that will make a difference in the world.

Ryan Cousins

Jamil Weatherbee

Russell Bush


Product Lifecycle Management (PLM) Software

See Also

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