Week 16. System integration

Week 16

System integration

Countdown to Final Project presentation

Week assignment Individual assignment:

  • Design and document the system integration for your final project.

Weekly Task Development

Bending Bench System Diagram

Final Project Schema

System integration week

I am documenting all the development of this system integration tasks in the
Project Development Week 15-16 section.

Tasks Completed:

  • Design and fabrication of the central PCB central PCB

    Milling Central PCB and the PCBs that will be placed under each seat on which I will place an HX711 ADC PCBs HX711

BoardSchema

Schema Board One Seat

  • Design and fabrication of the frame that will house the LEDs. I still need to define the outer case that will integrate the power supply and the main PCB. Frame laser cutting
  • Design and printing of 544 caps for each cell. (wip) 17 rows by 34 columns. I prepared a grasshopper strategy defining the parameters of layer size and number of perimeters to adapt the geometry to the characteristics of the model as much as possible. Cell Lib 3D And I set the printers to print Lid 3D
  • Modeling of the seat. 3D seat

Pending Tasks:

  • Design the enclosures that will house the PCBs. wip
  • Design the case where the load cells will be placed. wip Basic diagram of the routing of the wires to be milled in the board. wip Board under seats

You can check the progress of all the work I am doing at the following link:
Link to Project Development Week 15-16

BOM

List of materials

Hardware

Itemsunitsdescriptiontotal €
Load cell94x50 kg Load Cell 50kg Weighing Sensor Half-bridge Strain Gauge Human Body Scale Weight Sensor + mounting bracket4,59 €41,31 €
LEDs1450 Uds DC 5V WS281111,49 €160,86 €
Power Supply1LPV-100-5V 12A 230x70x40 mm32,62 €32,62 €
Lever quick connector201x2 32A0,44 €8,80 €
Bicolor Parallel cable OFC TASKER2 m.2 x 2,5 mm2,42 €4,84 €
Colored heat shrink tube2BPC0018 1,22 m d4,8 mm1,97 €3,94 €
Frame MDF 5 mm11210 x 101027,52€27,52€
21000 x 80022,11€44,22€
Support21000 x 800wip
Beam14000 x 140 x 90
Board under seats14000 x 500 x 30wip
Seat9400 x 300wip

Electronics

PCB load cellQuantity
PinHeader_01x04_P2.54mm_Horizontal_SMD9
PinHeader_02x03_P2.54mm_Vertical_SMD9
HX7119
PCB control load cellQuantity
R_1206 0 Ohm1
XIAO-ESP32C31
PinHeader_02x03_P2.54mm_Vertical_SMD3
PCB control LEDsQuantity
XIAO-ESP32C31
SCHOTTKY 100V 1A SOD-1231
PinHeader_01x03_P2.54mm_H_SMD1
Input GND SM99S01VBNN05G7 Data Sheet1
Input 5V SM99S01VBNN05G7 Data Sheet1
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