Vision FPGA SoM

by tinyVision.ai

An FPGA-based SoM with integrated vision, audio, and motion-sensing capability

View all updates Dec 23, 2020

Delivery Schedule & Production Build

by Venkat R

Hello everyone,

Apologies for the long delay between updates.

There were a number of changes planned and the breakout board morphed into a Feather form factor based on backer input. All these changes have to be prototyped and proven before building production units. This update covers all the activities that have happened to prove out the prototypes.

Delay in Production

Due to a delay in getting funds disbursed from the campaign, we have missed our window for the production build. The next window is in the second week of January. This will cause a delay in delivering the units to Crowd Supply for distribution to backers. We have updated the estimated shipping date accordingly.

Prototype Build

Here are some photos and videos from the prototype build. Things are looking pretty good so far: all circuits on the breakout board are functional, the developer kit programs the SoM successfully, and the SoM FPGA programs successfully.

To-Do

Plenty left to do folks. Heres my summary of the To-Do list:

  • The various sensors (Image sensor, Microphone and IMU) need to be proven since all of them were touched in the last major change to the SoM.
  • We have to port the demos over to the new SoM as some pins moved on the FPGA due to the modifications.
  • The RaspberryPi connector was added to the developer kit and has yet to be tested.
  • A factory test needs to be created to ensure all units are properly tested.
  • Order final parts and PWB's, build production units.
  • Ship to Crowd Supply
  • Plenty of documentation.

Prototype Build!

The builds were done at our amazing partners facility (Emcraft Systems) at Carlsbad, CA.

The boards get solder paste printed on them using a paste printer (much like an inkjet), fascinating to see this at work! This allows for extreme control over the amount of solder on each pad to prevent manufacturing issues such as poor solder joints, tombstoning, etc.

Then the boards go through a machine that can place thousands of parts per minute!

After placement, some parts had to be hand assembled. Quan, our SMT operator, has super steady hands indeed!

The boards go through a vapor phase reflow oven, pretty cool technology at work. Heres what the SoM boards look like after reflow.

Here’s everything we built in a day:

Here’s what the old (on the right) and new SoM (on the left) look like together. Pretty much all the parts moved around:

The SoM with the Himax sensor clipped in and the external camera flex as well:

Putting the stack together: the SoM, developer kit and a Pi Zero W:

And, it works! The breakout board charges an attached LiPoly battery and the SoM programs in the dev kit and blinks the RGB LED seen here:

Stay tuned for an update once the we complete pre-production testing and schedule the production run!

Thank you,

Venkat

About the Author

Venkat R

vrangan  ·  tinyvision-ai-inc  ·   San Diego, CA


$9,705 raised

of $8,000 goal

121% Funded! Order Below

Product Choices

$100

Vision FPGA SoM

One FPGA Vision SoM to play with! The price will increase once the campaign is over, so back us today!


$25

SoM Breakout Board

The SoM breakout board brings all SoM pins to 2.54 mm pitch pins for breadboarding, can't do without it! SoMe assembly required to solder the 2.54 mm headers on. Note: SoM is not included.


$90

SoM Developer Board

One developer board that breaks out SoM IO with in-line LEDs, includes a Raspberry Pi HAT connector, allows for USB power (with power monitoring) and programming, includes PMOD and QWIIC connectors, and has room for prototyping. Note: SoM is NOT included.

Credits

tinyVision.ai

tinyVision.ai works closely with clients to incorporate low power CV into their devices. We are enabling CV with hardware in the form of tightly integrated CV modules with a clean API.


Venkat Rangan


Emcraft Systems

Manufacturer

Pixart Imaging

Imaging

Himax

Component provider

See Also

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