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An Arduino compatible shield matched with a web based tutorial system to teach you how to talk with I2C and SPI components.
An Arduino compatible shield matched with a web based tutorial system to teach you how to talk with I2C and SPI components.
101 backers pledged $10,045 to help bring this project to life.

Inventory, Testing, Surveys and Shopping...

Posted by Daniel Hienzsch (Creator)
3 likes

Good afternoon everyone,

Inventory continues to arrive and I am getting ready to do some shipping.  Here is the current stock level...

  • 36 of the 57 I2C and SPI Education Shields necessary to fulfill the Kickstarter reward selections.
  • All of the I2C Display Addons necessary to fulfill the Kickstarter reward selections.
  • All of the Bubble Display Experimentation Kits necessary to fulfill the Kickstarter reward selections.
  • All of the Digital Logic Experimentation Kits necessary to fulfill the Kickstarter reward selections.

The remaining Education Shields should arrive within the next two weeks.

A Shield Field
A Shield Field

As the boards come in, I am testing each one to ensure proper operation.  And wouldn't you know it, I was three boards away from finishing this batch and I detected a total failure of the SPI bus.  I checked all the connections, checked the soldering, got the oscilloscope out and looked at the signals.  Everything was working fine at the pins, but none of the chips were getting anything at all.  After a couple hours of head scratching, multimetering and oscilloscopery, I finally found the culprit by testing things called "vias".  A via is a way you get one of your copper connections, the "copper trace" on your circuit board from one side to the other.  It's a hole drilled through the circuit board that gets plated with copper to connect it to traces on both sides.  Well, SCLK never even made it to the first via.  Some how, on that one board, there was a problem with the etching pattern, and in an area about the size of the head of a nail, all the copper was gone.  Pretty hard to recover from that.  But that's why I ordered excess inventory!

Good Board
Good Board
Bad Board
Bad Board

The individuals who selected a circuit board reward should have received a survey by now, asking you for your shipping address and email.  I'm going to start shipping tomorrow in order of who backed the campaign first (and has submitted their shipping information). I don't expect there to be a major delay in getting the remaining inventory in, but I want to start sending boards out now.  Be on the lookout for a shipping notification!

Test Jig
Test Jig


If you haven't checked in a while, there's a whole ton of education modules published now, and I'm almost done with I2C.  I also redesigned the layout of the site a bit, so it should make it a little more obvious where the content is. 

Have a look here: https://rheingoldheavy.com/category/education/education-shield-tutorials/

The site was rearranged to accomodate the new webstore, where you will be able to find an ever increasing inventory of Rheingold Heavy educational tools, circuit boards, and experimentation packs.  Most of the products are things that you've already pledged for, but there are a couple of things in there that are wholly new.  For those of you who pledged for the Education Shield only and would like to upgrade to the I2C Display Addon as well, those will be available as soon as all the existing backers have received their rewards.  Then I'll open up the inventory.  I haven't turned on any "pre-order" features yet, but there's a sign up form on the I2C Display page where you can request to be notified...

I2C Display Addon: https://rheingoldheavy.com/product/i2c-display-addon/

As always, keep your feedback, questions, comments and concerns coming!

-dan

Alex Corzo, PCBGRIP, and 1 more person like this update.

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