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Difference between revisions of "Brain Machine"

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(Soldering PCB)
(Soldering PCB)
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potmeter and the reset button on the top part of the box. Below a picture of
 
potmeter and the reset button on the top part of the box. Below a picture of
 
the PCB in the box, where I added some red lines to indicate how the components
 
the PCB in the box, where I added some red lines to indicate how the components
are connected on the back, and a picture of the back of the PCB.
+
are connected on the back.
  
 
[[File:Project_BM_Front.jpg]]
 
[[File:Project_BM_Front.jpg]]
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 +
A picture of the back of the PCB:
  
 
[[File:Project_BM_Back.jpg]]
 
[[File:Project_BM_Back.jpg]]

Revision as of 21:25, 17 October 2017

Project: Brain Machine
360x360px
Name Brain Machine
Initiator FFAA5E
Status Finished, kind of
Skills soldering, Arduino
Summary Creating a Brain Machine after an idea by Mitch Altman


A friend of mine wanted to have a brain machine like the one offered by Ada Fruit, but when it turned out that the international shipping costs were rather high, I decided to build one myself from parts. I started with the design by Chris Sparnicht and took some ideas from the brain machine from Ada Fruit with respect to the schematics of the headphone. I also decided to use a single potmeter to control the volume by putting it between the 'ground' of the earphones and the ground. I am aware that this could cause some crosstalk when the volume is reduced, but I hope it is not going to be a big problem. I arrived at the principal schema as displayed below based on a cheap Arduino Nano clone

Project BM Schema.png

Parts

I bought the following parts from STORES for the brain machine:

  • 10K potmeter with nob
  • 2m 3.5 jack extention cord
  • Two 3.5 female jacks
  • Three 220Ω resistors
  • Two 3.3KΩ resistors
  • Two 1µF elco condenstators
  • Two red 5mm LEDs
  • Small box including PCB

Soldering PCB

I spend about four hours working at assembling the brain machine. I spend some time removing some material from the PCB of the Arduino Nano near the USB connector with a file, to make it fit in the box. Next I spend some time putting the components on the PCB. I also attached some wires (not all) that will connect to the jacks, the potmeter and the reset button on the top part of the box. Below a picture of the PCB in the box, where I added some red lines to indicate how the components are connected on the back.

Project BM Front.jpg

A picture of the back of the PCB:

Project BM Back.jpg

Wiring

I drilled holes in the box for the jacks, the potmeter and the reset button. Finished the wiring between the PCB and these parts. The result can be seen in the picture below.

Project BM Inside.jpg

Glasses

Next, I made the glasses with the LEDs. Bellow a picture of the finished box with the glasses and some headphones

Project BM outside.jpg

Programming