Google Home Visualization LED

Solder pin headers

Pin headers are for connecting conveniently between a board and cables. Normally, pins are put onto the board.

This time, I put it horizontally because the board needs to be laid on the 3d printed bottom frame.

That soldering way saves space.

Solder the microphone part

It is same way. Put the header pins on the board horizontally and solder it carefully.

Solder the LED Ring

It is same way. Put the header pins on the board horizontally and solder it carefully.

Making a cables

All VCC parts are needed to connect together. There are many ways to tie them together. In this tutorial, I just make some cables.

Capacitor

The reason I use the capacitor is for stabilizing the power. In the middle of developing this work, I got some problem reading sensor value. It turned out the problem was from the LED. The LED ring has 24 * 3 color LEDs. They consume a lot of power and every time they are turned on, the power over the circuit is dramatically down. That makes a large mount of noise.

The capacitor prevents from the noise and sudden power consuming.

You need to be careful about the direction. The capacitor has 2 poles. Positive pole must be connected with VCC and negative must be connected with GND.

Insert the "Red" cable to 5v on the board

insert red cable on the VCC on the microphone

insert the red cable on the LED's vcc

insert the black cable to the GND of the LED board

insert the black cable to the GND of the Mic board

insert the black cable to the GND of the ATtiny85 board

insert the Yellow cable to the P0 of the board

insert that yellow cable to in of the LED board

put the white cable to P2 of the board

put the white cable to "OUT" of the Mic board

glue it

You may need to adjust the location again, so glue it a little

Assemble the LED ring on the frame.

The frame has hooks so you don't need to put any glue on it.