$2 for PCB Prototype & Free SMT assembly : https://jlcpcb.com

We learn how a “strain gauge” works, how to pass from resistance changes to voltage values and read that with an ADC and then how to use these with a load cell and create a precision homemade scale.

GET LASER ENGRAVER HERE
Ortur 15W engraver (150€): https://www.gearbest.com/laser-engraving-machine/pp_009731781853.html?wid=1433363&lkid=78289124
Ortur 7W engraver (131€): https://www.gearbest.com/laser-engraving-machine/pp_009864326043.html?wid=1895967&lkid=78289128

ELECTRONOOBS.io: https://electronoobs.io
Help my projects on Patreon : https://www.patreon.com/ELECTRONOOBS
my Q&A page: https://electronoobs.io/forum/index.php
Facebook page: https://www.facebook.com/Electronoobs
Canal en Español: https://www.youtube.com/channel/UCL_QvUUeriC6q610RCXDlSQ

LINKS
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Tutorial: https://electronoobs.io/tutorial/
Tutorial website: https://electronoobs.com/eng_arduino_tut115.php
Schematic (1 cell): https://electronoobs.com/eng_arduino_tut115_sch1.php
Code (1 cell): https://electronoobs.com/eng_arduino_tut115_code1.php
Q2HX711: https://electronoobs.com/eng_arduino_hx711.php
i2c LCD library: https://electronoobs.com/eng_arduino_liq_crystal.php
Schematic (4 cells): https://electronoobs.com/eng_arduino_tut115_sch2.php
Code (4 cells): https://electronoobs.com/eng_arduino_tut115_code2.php

VIDEOS
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Wheatstone bridge video: https://youtu.be/ZqAM_wQ35ow
ADC video: https://youtu.be/Q1I3axj1cQA
Sensors video: https://youtu.be/DlG6LY84MUU

PRINTERS FDM
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All printers: http://bit.ly/2lPkaS7
Tron X1 (only 89.5€): http://bit.ly/2kiqpx9
Coupon: “U363AD0D5558D000”
Creality Ender 3: http://bit.ly/2kLbJa7
Coupon (169.9$): “1J6X3Z40U1”
Alfawise U30 (145€): http://bit.ly/2kLtMNr
Alfawise U20 (236€): http://bit.ly/2kBYZmi
Alfawise U50 (181€): http://bit.ly/2kNSk8m
Crealitu CR10 (345€): https://www.banggood.com/custlink/mvKma1cjDM
Creality CR20 (363€): https://www.banggood.com/custlink/KvDml1pOvw
TEVO Tarantula Pro (199€): http://bit.ly/2mcbeGn
Anycubic MEGA- S (354€): http://bit.ly/2lSiQh8

PRINTERS RESIN
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Anycubic Photon SLA (400€): https://www.banggood.com/custlink/mKDGjTcjyF
Alfawise W10 SLA (245€): http://bit.ly/2lOiQPf
Longer Orange 10 (208€): http://bit.ly/2mkgCaN

Like share and subscribe to motivate me. Thank you

#strain
#scale
#Arduino

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