# DIYBMS v4

**URL:** <https://community.openenergymonitor.org/t/diybms-v4/11292>\
**Category:** diyBMS\
**Tags:** bms, diybms, battery\
**Created:** [30 June 2019 09:06 UTC](https://community.openenergymonitor.org/t/diybms-v4/11292 "2019-06-30T09:06:01Z")\
**Posts on this page:** 1\
**Showing post:** 5738

<div class="post-metadata">

**Author:** ![peterp](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/peterp/32/35182_2.png) [@peterp](https://community.openenergymonitor.org/u/peterp)\
**Post date:** [24 August 2025 06:59 UTC](https://community.openenergymonitor.org/t/diybms-v4/11292/5738 "2025-08-24T06:59:52Z")

</div>

Sorry, my fault, there should be no calibration needed with the reference voltage… I was also using wrong firmware as my reference voltage is 4.096V and I dont have the U6 on the board. I’m still getting diffrent readings everytime I connect the module, so it seems that I have issues with the reference voltage reaching ADC…

---

_[View the full topic](https://community.openenergymonitor.org/t/diybms-v4/11292)._