Hello,
i want to share with this bleuthoot pcb made by me,it's free to use, commercial, develop, diy ...
any thing you want
just what you need after soldring the modules and SMD componant in right place, is to find an App to pair with it and communicate
https://easyeda.com/hichm/controle-device-via-bleutooth-tryhere the link of the pcb, and also i extract a pdf to see how it's look like (Attached files)
Happy DIY