Smart Coffee Table with Nano and HX711

This smart coffee table illuminates your environment according to the weight of your drink.

Mar 21, 2019

17275 views

13 respects

Components and supplies

1

Grove - WS2813 RGB LED Strip Waterproof - 60 LED/m - 1m

1

Arduino Nano R3

1

SparkFun Load Cell Amplifier - HX711

1

BD 135 Transistor

1

Linear Regulator (7805)

1

Resistor 10k ohm

Tools and machines

1

Soldering iron (generic)

1

3D Printer (generic)

Project description

Code

HX711_full_example.ino

arduino

HX711_full_example.ino

arduino

Downloadable files

hx71112222_kb1dYR9i2M.png

hx71112222_kb1dYR9i2M.png

ilk_devreeee_7r9m5FaDs4.png

ilk_devreeee_7r9m5FaDs4.png

hx71112222_kb1dYR9i2M.png

hx71112222_kb1dYR9i2M.png

Comments

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Anonymous user

2 years ago

Hi, https://www.circuito.io/static/reply/index.html?solutionId=5da6ee4a9cfabe003054245f&solutionPath=storage.circuito.io I am trying to build the above circuit powered by battery alone. Sparkfun HX711 is expensive and hence I am using Amazon HX711 HX711 module has Operating Voltage: 2.7V to 5VDC and Operating current: <10 mA https://learn.sparkfun.com/tutorials/load-cell-amplifier-hx711-breakout-hookup-guide Sparkfun HX711 has VCC and VDD. VCC is the analog voltage to power the load cell. VDD is the digital supply voltage used to set the logic level. In many cases, you can just short VCC and VDD together. If your microcontroller uses 3.3V logic however, you'll want to connect VCC to 5V and VDD to 3.3V. https://www.amazon.in/Generic-HX711-Weighing-Dual-Channel-Precision/dp/B00OUZCS2Y/ref=asc_df_B00OUZCS2Y/?tag=googleshopdes-21&linkCode=df0&hvadid=396979667742&hvpos=1o1&hvnetw=g&hvrand=2244786411104874136&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9062038&hvtargid=pla-553388600392&psc=1 Amazon HX711 has only VCC and no VDD. Therefore, can I connect LoadCellHX711SF VCC to NodeMCU1 3V3 instead of connecting LoadCellHX711SF VDD to NodeMCU1 3V3? Thanks and regards, Rashmi

Anonymous user

2 years ago

I have a similar project that I'm currently working on where we're applying weight to a truss structure, and depending on whether the member is in tension, or compression, the LED lights will change color depending on the load identified in the S-type load cell. I'm trying this code out and I receive a "no matching function for call to 'HX711::HX711()'" error. I've come across this error quite a few times in other codes I've tried. What does this mean?

Anonymous user

2 years ago

sir can i kindly get the full code, because i want to make the exact coffee table for my school project plz.

Anonymous user

3 years ago

sir can i kindly get the full code, because i want to make the exact coffee table for my school project plz.

Anonymous user

5 years ago

Can I use 50 kg range single load cell. Is there any modifications of the code is necessary.

Anonymous user

5 years ago

I have a similar project that I'm currently working on where we're applying weight to a truss structure, and depending on whether the member is in tension, or compression, the LED lights will change color depending on the load identified in the S-type load cell. I'm trying this code out and I receive a "no matching function for call to 'HX711::HX711()'" error. I've come across this error quite a few times in other codes I've tried. What does this mean?

rashmimahadevaiah

5 years ago

Hi, https://www.circuito.io/static/reply/index.html?solutionId=5da6ee4a9cfabe003054245f&solutionPath=storage.circuito.io I am trying to build the above circuit powered by battery alone. Sparkfun HX711 is expensive and hence I am using Amazon HX711 HX711 module has Operating Voltage: 2.7V to 5VDC and Operating current: <10 mA https://learn.sparkfun.com/tutorials/load-cell-amplifier-hx711-breakout-hookup-guide Sparkfun HX711 has VCC and VDD. VCC is the analog voltage to power the load cell. VDD is the digital supply voltage used to set the logic level. In many cases, you can just short VCC and VDD together. If your microcontroller uses 3.3V logic however, you'll want to connect VCC to 5V and VDD to 3.3V. https://www.amazon.in/Generic-HX711-Weighing-Dual-Channel-Precision/dp/B00OUZCS2Y/ref=asc_df_B00OUZCS2Y/?tag=googleshopdes-21&linkCode=df0&hvadid=396979667742&hvpos=1o1&hvnetw=g&hvrand=2244786411104874136&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9062038&hvtargid=pla-553388600392&psc=1 Amazon HX711 has only VCC and no VDD. Therefore, can I connect LoadCellHX711SF VCC to NodeMCU1 3V3 instead of connecting LoadCellHX711SF VDD to NodeMCU1 3V3? Thanks and regards, Rashmi