# Digital I/O for QA402

**URL:** <https://forum.quantasylum.com/t/digital-i-o-for-qa402/465>\
**Category:** QA40x\
**Created:** [September 1, 2021, 8:35pm UTC](https://forum.quantasylum.com/t/digital-i-o-for-qa402/465 "2021-09-01T20:35:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![AVO](https://avatars.discourse-cdn.com/v4/letter/a/b2d939/32.png) [@AVO](https://forum.quantasylum.com/u/AVO)\
**Post date:** [September 1, 2021, 8:35pm UTC](https://forum.quantasylum.com/t/digital-i-o-for-qa402/465/1 "2021-09-01T20:35:35Z")

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Hello, I was wondering if there are plans for a digital I/O breakout module/board? End of the year or early next year I plan to design a DSP board with an ADAU1466 and analog and digital inputs/outputs. The ADAU1466 has SRCs and with an expansion connector this board could be an option for a breakout board. If QA comes with a solution, I will most likely not add the expansion connector.

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**Author:** ![blurpy](https://avatars.discourse-cdn.com/v4/letter/b/958977/32.png) [@blurpy](https://forum.quantasylum.com/u/blurpy)\
**Post date:** [September 3, 2021, 1:50pm UTC](https://forum.quantasylum.com/t/digital-i-o-for-qa402/465/2 "2021-09-03T13:50:58Z")

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I’m curious of the status of that as well. Matt showed a breakout board in this post a while ago:

> [@Sneak Peek: The QA402](https://forum.quantasylum.com/t/sneak-peek-the-qa402/203/79):
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> Hi @ChUml, Below is a representative plot of THD. Below is a representative plot of THD+N Compared to what was previously posted you can see a lot of clean-up around discontinuities. This is from smarter switching points for the relays. For loopback, here is THD And for loopback, here is THD+N One issue is that the input and output relays need to be configured differently depending on whether you are wanting to optimize for THD or THD+N. For best THD…

But I haven’t seen any news after that.

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**Author:** ![matt](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@matt](https://forum.quantasylum.com/u/matt)\
**Post date:** [September 3, 2021, 5:02pm UTC](https://forum.quantasylum.com/t/digital-i-o-for-qa402/465/3 "2021-09-03T17:02:04Z")

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Release 1.0 for QA40x is imminent, with whatever bug fixes that might be reported in the next week or two and docs updated. Shortly after that will be a release 1.1, which is a development release that will have the I2S stuff working. And we’ll move to even releases (1.0, 1.2, 1.4, etc) for stability, and odd releases (1.1, 1.3, 1.5, etc) for new features. And after the I2S is added, we’ll go back and pull QA401 support into the QA40x application and then put QA402 support into Tractor.