Automatic Bottle Filling System

Every day we have to fill up small bottles with a cleaning agent for eyeglasses.

My idea was to build a machine that does this automatically for us.

Since our customers often bring us the bottles half full, it would not have been possible to only run the pump for a certain period of time.

That's why I integrated a scale into the bottle holder.

The pump only starts from a weight of 8 grams (empty bottle) and stops as soon as it has reached its capacity of 60 grams.

If the bottle is removed during filling (<8 grams), the pump stops automatically.

The green button starts the process.

The red button is EMERGENCY_OFF and tare.

-----The whole Text was translatet by google----

I designed the board with Fritzting. After I printed it at AISLER, I decided on a different relay.

Fritzing drilled the unnecessary holes because of the display ic2 board.

Shopping List
1 1 Channel Power Relay Variante variant

1 Arduino Nano (Rev3.0) Typ Arduino Nano (3.0)

2 10kΩ Resistor Widerstand 10kΩ

1 HX711 Weighing Sensor Module Variante variant 1Kg; chip HX711

https://www.amazon.de/ARCELI-W%C3%A4gezellen-Gewichtssensor-elektronische-K%C3%BCchenwaage-W%C3%A4gezellen-Gewicht/dp/B07MY35F92/ref=pd_sbs_sccl_1/260-6933538-9709333?pd_rd_w=qF0DD&pf_rd_p=dd7cdb0d-7d18-43ba-a06d-a9f4cc6bae51&pf_rd_r=N7R2D1Q2RC854V12YYVE&pd_rd_r=1fe6fe6e-7b2c-4c14-934d-a3d0152ca50c&pd_rd_wg=xcYef&pd_rd_i=B07MY35F92&psc=1

1 Power Switch

https://www.amazon.de/gp/product/B07M85FZQL/ref=pp...

2 Push Button

https://www.amazon.de/gp/product/B087V61SNJ/ref=pp...

Thanks to some practice with Fusion 360, I designed the housing from several parts and had it printed via an online 3D printing service.

the large housing part was probably a challenge for the 3d printing partner.

Then had to drill the holes by hand to the right size.

I'm definitely not a professional programmer...

Hope you get along with the German variables.