# Smart sleeve board replacement

**URL:** <https://www.evolver.bio/t/smart-sleeve-board-replacement/462>\
**Category:** Hardware\
**Created:** [May 23, 2023, 9:44pm UTC](https://www.evolver.bio/t/smart-sleeve-board-replacement/462 "2023-05-23T21:44:29Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![kawidney](https://avatars.discourse-cdn.com/v4/letter/k/a9adbd/32.png) [@kawidney](https://www.evolver.bio/u/kawidney)\
**Post date:** [May 23, 2023, 9:44pm UTC](https://www.evolver.bio/t/smart-sleeve-board-replacement/462/1 "2023-05-23T21:44:29Z")

</div>

Hi, we had to order a replacement smart sleeve due to a spill and received a Rev C sleeve, while all the others on our turbidostat are Rev D. This seems to have created an issue because we are getting very different readouts with the Rev C board than the Rev D board, and are unable to calibrate the Rev C board within the OD range necessary.  
 ![20230522ODCalLR](https://canada1.discourse-cdn.com/flex035/uploads/evolver/original/1X/5aaa8ba278a3d0420ed068c69bc07043611c48b8.png)  
vial 5 has the Rev C board

---

<div class="post-metadata">

**Author:** ![bgwong](https://yyz1.discourse-cdn.com/flex035/user_avatar/www.evolver.bio/bgwong/32/262_2.png) [@bgwong](https://www.evolver.bio/u/bgwong)\
**Post date:** [May 24, 2023, 11:50am UTC](https://www.evolver.bio/t/smart-sleeve-board-replacement/462/2 "2023-05-24T11:50:00Z")

</div>

Rev C and Rev D have the OD135 and OD 90 flipped for the pins they go to. We’ll send a replacement for the sleeve kit to fix that.

Brandon