This device will let you hear everything! DIY hearing aid.

JLCPCB for $2 PCBs (48 hours build time):
Download PCB
Hearing aid from China

Transistors 2N5551

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Russian version


TheViking says:

can i use with project for the pc mic ???

Uiuu Tajikistan त says:

3.7 v se 240v saplai Kaise kare

gareth ronaldo says:

Good job dude

Edas Pacauskis says:


wolvenar says:

how does this get around unwanted noises?

Nerdygirl says:

This circuit, hooked up to a transmitter, is an excellent bugging device.

UFOhunter says:

You have a good heart.

Yes says:

Wonderful video

zumbazumba1 says:

Hello guys ,i am trying to make mot spot welder.Does anyone know how to make it adjustable so i can control the current of a secondary coil(the buissnes end where electrodes are)?

Konain Haider says:

This circuit is for the deaf people.

Muhammad Sheikh says:

where is gerber file ?

Mitica Badila says:

Excellent work!

PASSTRAN eci_twi says:


electro magic says:

hi nice video but are you a girl

Darwin Mendoza says:

Love the circuit. I’m trying to learn how to make circuits, does anyone recomend any books or websites?

SKORPION 15 says:

Your projects are very interesting, I subscribed 🙂

Shoumik Ahmed says:

Make video on automatic night light

vismakan says:

What capacity is c1

Eddy Yu says:

Are you really a woman ? You so smart !

Ritcheboy Bartolabac says:

Someone who make this?
It really work?

Henry Fazbear TNT says:


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