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

JLCPCB for $2 PCBs (48 hours build time): https://jlcpcb.com Download PCB http://www.kit-shop.org/zip/slx.zip Hearing aid from China http://shopeasy.by/redirect/cpa/o/p1b... Transistors 2N5551 http://shopeasy.by/redirect/cpa/o/p1b... My microscope http://shopeasy.by/redirect/cpa/o/p1b... Another microscopes http://shopeasy.by/redirect/cpa/o/p1b... Facebook   / kasyan-tv-139150916827430   Make money on Aliexpress http://epngo.bz/epn_index/29c81 Cashback 8.5% http://ali.pub/21o6mg Russian version    • Эта штука позволит услышать все!  Слуховой...