This page will contain some modifications to QMX+ by enthusiastic owners! Any modifications will be risky! So bear that in mind, while you contemplate... 

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Battery and Audio board by Necati TA7MNA

Battery and Audio board by Necati TA7MNA

3-4 weeks ago me and my father Özkan (TA7OZX) made the exact board crudely onto a perfboard and it works like a charm then we got the idea to design a PCB to make it easier to assemble. At first I was going to design a suitable BMS and audio circuit and order with PCBA but due to chip shortages in JLCPCB I was forced to use the exact modules I used first.

I assembled the PCB in holiday and it works like a charm. I gave six boards to the other amateurs I know and they loved it and probably they will start to use it soon in outdoor activities.

Here is the github link: https://github.com/laxdronum/QMX-Plus-Battery-and-Audio-Board