Guitar Tuner PCB

martes, 31 de julio de 2018 0 Comentarios, Dejar un Comentario

The guitar tuner PCB is ready to get manufactured!


I have send all the gerber files to PCB Fabrication, so here there also if you want to make one of your own, this Open Hardware, so you can downloaded and used as you prefer to.

This PCB contains as said in previous posts a Microphone amplifier, a bunch of LEDs as user inteface, i have added 3 buttons if needed, it has a 3v rechargable battery socket and a connector for an external battery.

I think its important to say that this design uses de reverse mount LEDs of Wurth, I have never use those LEDs so i hope they look awsome in this design as it will be part of the front plate of this device.


I use Autodesk eagle in all my designs so you may download them an used with a free version of eagle if you want.


Download Files Here!

Guitar Tuner Schematic

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Its been a while but i have now the schematic for the Low power guitar tuner explained in previous posts, so let describe you the sections

Adquisition stage:


This is the microphone amplification MAX4466 tha will be conected to oune of the inputs of the MCU to detect the tune of the guitar.

Next is the user inteface that consists of LEDs in this case will be reversed mounted LEDs.
This leds will tell the user the tone detected and tell if the guitar string needs to be tighten or a bit loosen.

 In the next post i will upload the PCB route and also the file in eagle so that anyone can DIY it.