RGB Glasses
Introduction: RGB Glasses
Hey guys how you doing!
So here's my ESP12F Based RGB LED Glasses which are made entirely from PCBs
I prepared a PCB with normal glasses size and put WS2812B LEDs on it, and then used an ESP12F to control the LEDs via a WEB Server.
The frame has been modeled just like actual glasses, only difference here is that the material of these glasses is FR4 instead of Plastic.
Supplies
Materials Required (BOM)
* Frame PCB x1
* Temple PCB x2
* Stencil
* 10K Resistance 0805 x 4
* push button x1
* Header pins
* 10uf 16V Capacitor
* 22uf 1206 Capacitor x 1
* 4.7uf 1206 Capacitor x 1
* 200R (0 Ohms can also be used instead of this)
* AMS1117 x 1
* USB Micro port
* M7 Diode
* DPDT Switch
* ESP12F
* WS2812B LEDs x 49
* NODEMCU
Step 1: Getting Things Ready
My Approach for making these glasses was a bit different as I didn't use any 3D Printed parts in this build.
Instead, I used the FR4 Board or PCB as the main Frame of glasses.
I Designed two different PCBs for this project and gave them to Seeed Studio for samples and received them after a few weeks.
This Project is made with two different PCBs, one of them is Frame PCB and the other is Temple PCB.
Step 2: Getting PCBs From Seeed Studio
For Getting PCBs, I used Seeed Studio's Service for both PCBs that are being used in this project.
Seeed Fusion PCB Assembly Service offers one-stop prototyping for PCB manufacture, PCB assembly and as a result, they produce superior quality PCBs and Fast Turnkey PCBA from 7 working days.
I was really intrigued with their quality, especially the temple PCB.
When you prototype with Seeed Fusion, they can definitely provide Free DFA and Free functional tests for you!
Check out their website to know about their manufacturing capabilities and service.
https://www.seeedstudio.com/prototype-pcb-assembly.html
Step 3: FRAME PCB
This PCB Construction was rather simple, I modeled the PCB according to the actual generic frame size and added WS2812B Setup on it.
49 LEDs are connected in WS2812 Config in which the first LED's Dout goes into the second LED's Din, the second LED's Dout then goes into the third LED's Din and this series goes on and on. WS2812B LEDs are controlled by connecting the Temple PCB on given slots and soldering Data, VCC, and GND Pads of Frame with Temple PCB Together.
FRAME PCB ASSEMBLY
I set up the stencil for the PCB by first placing the PCB on a Cardboard and matching the Component PAD of the PCB with the Stencil. when the PADs matched, I placed tape on both sides to hold the stencil steadily on top of the PCB and bring out an OLD Plastic Card for applying solder paste on the stencil.
I applied the Solder paste on the stencil with the plastic card evenly on each pad and placed each LED on PCB one by one in proper pin order.
After that i place the PCB on Hotplate for the reflow process, Hotplates heats up the PCB upto the solderpaste melting temperature.
After the reflow process Frame PCB is ready. now let's look at the second PCB which is the Temple PCB
Step 4: Temple PCB
This PCB is modeled after the shape of the temple of glasses and it houses the ESP12F setup with other components.
This PCB is an ESP12F Breakout Board with the minimal ESP12F Config. 982
There's a battery connector for adding a small 300mA Lithium-ion battery and a USB port for charging that battery or powering the ESP12F straight from a power bank.
USB Port is the input side of this PCB which inputs 5V into the system and then the AMS1117 Circuit steps down the voltage (5V) into 3.3V for ESP12F working. the output from AMS1117 goes into the ESP12F via a DPDT Switch which controls the ON and OFF state of this Board.
TEMPLE PCB ASSEMBLY
I prepared the Temple PCB in the same way but didn't use stencil this time. I added the solder paste on the components pad and then added all the components one by one on the PCB. after that, I just put this PCB on a Hotplate.
Hotplate heats this PCB slowly up to the required Melting Temperature of Solder paste. 472