Weighing Scale Design: Using PSoC5LP

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Vasanth
Moderator
Moderator
Moderator
250 sign-ins 500 solutions authored First question asked

Hi all,

Following is a PSoC 5 based load cell measurement system. The project attachment contains Weighing Scale Example and Bridge Sensor Example in the workspace. The Weighing Scale example provides a complete code to measure the weight using a load cell and display the results on an LCD display. The Bridge Sensor example is provided for easily porting the analog front-end example across other sensors. The projects implement Correlated Double Sampling. Moving Average Filter is also implemented to filter the results.

Block Diagram

blockdiagram.jpg

Schematic Diagram

001-schematic.JPG

Hardware required: CY8CKIT-050

Software required: PSoC Creator 4.3

Best Regards,
Vasanth

4 Replies
MotooTanaka
Level 9
Level 9
Distributor - Marubun (Japan)
First comment on blog Beta tester First comment on KBA

Hi,

Nice Sample!

You may want to change the schematic with the one below, which I took from your project with adding a white rectangle background.

001-schematic.JPG

moto

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Vasanth
Moderator
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250 sign-ins 500 solutions authored First question asked

Hi Motoo san,

Updated the image as per your suggestion ! Thanks for the feedback.

Best Regards,
Vasanth

SaGo_1270606
Level 1
Level 1
10 sign-ins 5 sign-ins First reply posted

Hi

How do I calculate this values?

FULL_SCALE_DISPLAY_COUNTS

FULL_SCALE_SENSOR_COUNTS

COUNTS_TO_WEIGHT

Thank you

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PeSe_1509996
Level 3
Level 3
25 replies posted 10 sign-ins 5 questions asked

Dear Vasanth,

Would you be so kind to help me to fully understand your design:

what is the reason / function of 12k resistor between SensorPlus and VSSA ground in your shematic ?

Thanks in advance !

Best Regards,

Peter

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