Introduction: PCB SPEAKER V2
I recently made an interesting wireless speaker project that was a finalist in the PCB competition.
You can check this post by clicking here and the video as I created by clicking here. I used PCB for this, which I made myself and as I announced, I also made it on a professional board. This is my first purchased PCB and I am very satisfied with it. In the previous post, I described the project stages from idea to prototype, and in this project, I will focus on finalizing the project.
It cost me around $ 15, here is a set of elements:
Step 1: Assumptions
From the beginning, I wanted to create a project with all electronic components on its housing.
From many ideas I chose the speaker, after all, I often listen to music so every day my eyes will enjoy it :). I thought it would be nice if all its housing were made of PCB. So it will consist of six separate boards, where each is responsible for something else:
2. Bluetooth and amplifier
4. Microcontroller and radio
5. Programming connectors
6. Adjust the volume and frequency of the received FM band
I did not want to use goldpins or other types of connectors, so I used ordinary soldering pads.
Step 2: PCB Design
I had to make some corrections to the previous scheme and add two or three elements.
The PCB design has also changed. When I was making my own boards, I tried to make all connections on the top side, so imagine how I freely created vias to guide the tracks on the bottom of the board. Finally, I put the names of the elements in the right places and added polygon.
Step 3: PCB Order
The PCBWay company allows the purchase of 10 pieces of PCBs with maximum dimensions of 10cm x 10cm at a price of 5$ and I managed to fit in my boards in two panels 8cm x 10cm. Then in Eagle, I exported my project to Gerber files and saved them as a PCBSpeaker.zip file. I visited the site PCBWay.com and chose the Quick-order PCB option and then I downloaded my PCBSpeaker.zip file and thanks to Online Gerber Viewer I checked what the board will look like then I ordered it.
Step 4: Soldering
Time for the best part of the project - soldering! As always I started with the smallest elements such as resistors and capacitors and end with an encoder and OLED display. For soldering the microcontroller and the FM module I used a hot-air instead of a soldering iron, but you can easily do it with a soldering iron. When all the boards were ready I soldered them together to form a casing.
Step 5: Programming
Using numerous examples from the internet, I created my own code that displays on OLED screen when it occurs connection with the phone, whether the Super Bass option is enabled, the battery charge status and the frequency of the received FM band. All you have to do is simply download the code and upload it to your speaker.
Step 6: That's All!
Designing and creating this speaker brought me a lot of joy and nervous moments through which I wanted to quit working on this project but luckily I led it to the end. Although this is an improved version, there are still things I would do differently.