This is a collection of parts to make an HO scale weigh station / train scale. I used an Arduino Nano and and Arduino Mega due to the scales library being a large memory hog. You may be able to use other Arduinos but that's what I went with. See my video on YouTube: https://youtu.be/d24vZDi6BWU -Updated 9/4/22
The Arduino Sketches and Wiring Diagrams are here: https://drive.google.com/drive/folders/1cYAL-k_ukXBNTkJ5bv23ysgVihX0h9pj?usp=share_link (Updated 2/11/2023)
These parts are what I did but I imaging others may want to do something different. You can easily scale the Z axis in your slicer for some file to get the right heights for your layout. The load cell mount is designed to allow you to level the track in all 3 dimensions.
Parts used:
-Amazon-
I2C OLED 128×32 Display
https://www.amazon.com/dp/B08NGL1PQ2/ref=cm_sw_em_r_mt_dp_Z9S64C536BFSB61TF0BW?_encoding=UTF8&psc=1
I2C LCD 20 X 4 Display
https://www.amazon.com/dp/B06X6LDNTT/ref=cm_sw_em_r_mt_dp_PYNN6CVV4WH0GG1TPJG6?_encoding=UTF8&psc=1
HX711 Weighing Sensor 1KG
https://www.amazon.com/dp/B08KRV8VYP/ref=cm_sw_em_r_mt_dp_QJGXFHHQH15K5HCWQ65V?_encoding=UTF8&psc=1
VL53L0X Ranging Sensor (x2)
Modulehttps://www.amazon.com/dp/B08SK7XTNX/ref=cm_sw_em_r_mt_dp_9RZAGPRMGN0MHN77BPWR?_encoding=UTF8&psc=1
Gikfun Solder-able Breadboard
https://www.amazon.com/dp/B071R3BFNL/ref=cm_sw_em_r_mt_dp_0MJWY5VSDYQZ83K4FFS0?_encoding=UTF8&psc=1
I have noticed that the hole patterns are not always the same with these.
Gikfun 12x12x7.3 mm Push Button Momentary SMD PCB Switch with Cap
https://www.amazon.com/dp/B01E38OS7K/ref=cm_sw_em_r_mt_dp_7SVTWWTMRS8ARW7E228D
Arduino Nano
Arduino Mega
| 128x32_OLED_Back.stl | 7.7KB | |
| 128x32_OLED_Base.stl | 13.1KB | |
| 128x32_OLED_Face.stl | 429.0KB | |
| 128x32_OLED_Post.stl | 142.7KB | |
| Control_Panel_2x4_Bracket.stl | 628.9KB | |
| Control_Panel_Back_Rev1.stl | 1.0MB | |
| Control_Panel_Face.stl | 6.1MB | |
| Control_Panel_Left_Arm.stl | 373.0KB | |
| Control_Panel_Right_Arm.stl | 373.1KB | |
| Laseer_Base.stl | 17.3KB | |
| Laser_Top_Left.stl | 13.0KB | |
| Laser_Top_Right.stl | 13.0KB | |
| ScaleSignal_Conditioner.stl | 17.4KB | |
| Scale_Load_Cell_Holder_Bottom.stl | 1.4MB | |
| Scale_Scale_Bottom.stl | 1.2MB | |
| Scale_Shim_FRONT.stl | 21.7KB | |
| Scale_Shim_REAR.stl | 33.5KB | |
| Scale_Top.stl | 1.0MB |
