Week 16:System Integration

May 20, 2024

Project Document

6. Design Togo Board

Togo Board Design

w16 w16 w16 w16 w16 w16 w16 w16 w16

Cable Management

w16 w16 w16 w16 w16 w16 w16 w16

ToGo Cube Desıgn

w16 w16 w16 w16 w16 w16 w16 w16 w16 w16 w16

ToGo PCB MOdule

w16

ToGO Cube + Board

w16 w16 w16 w16 w16 w16

BOM (Bill of Materials)

PCB Cube

Part Name Quantity
XIAO-ESP32C3 1
LED_1206 2
C_1206 (Capacitor) 1
R_1206 (Resistor) 2
LED WS2812B 1
Conn_PinHeader 2.54mm 5
Lipo 3.7V 1000mAh 1
Step-up Adaptor 1

Board Electronic

Part Name Quantity
Raspberry Pi 4 1
Raspberry Pi Camera 2 1
WS2812B LED Strip 42
3-Pin Pigtail Connector 6
Adaptor TDK 5V 2A 1
Power Adapter 5V 3A 1

Mechanical Equipment

Part Name Quantity
Board Profile
Sigma 20mm x 20mm 5m
3mm Plexiglass
3D Filament
M4 Screw

Detailed Descriptions and Notes

PCB Cube

  1. XIAO-ESP32C3: ESP32-C3 microcontroller module.
  2. LED_1206: 1206 package SMD LED, for general illumination or indicator light.
  3. C_1206 (Capacitor): 1206 package SMD capacitor, for circuit stabilization.
  4. R_1206 (Resistor): 1206 package SMD resistors, for current limiting of LEDs and other components.
  5. LED WS2812B: Addressable RGB LED.
  6. Conn_PinHeader 2.54mm: 2.54mm pitch pin header, for component connections.
  7. Lipo 3.7V 1000mAh: Lithium polymer battery, power source.

Board Electronic

  1. Raspberry Pi 4: Central processing unit, controls the project.
  2. Raspberry Pi Camera 2: Camera module, provides visual input.
  3. WS2812B LED Strip: 42 addressable RGB LED strips.
  4. 3-Pin Pigtail Connector: 3-pin connectors for LED strip connections.
  5. Adaptor TDK 5V 2A: 5V 2A power adapter, for LED strips.
  6. Power Adapter 5V 3A: 5V 3A power adapter, for Raspberry Pi.

Mechanical Equipment

  1. Board Profile:
    • Sigma 20mm x 20mm: I use for board structure
  2. 3mm Plexiglass: I use inside board design
  3. 3D Filament: 3D printer filaments, for printing Cube desing
  4. M4 Screw: M4 screws for assembly and securing components.

Power Management for ToGO Project

Power Budget and Supply Compliance

The total power consumption of all components is estimated calculated.

Components Power Consumption

Cube

  1. XIAO-ESP32C3: 160mA (max)
  2. LED_1206 (2 units): 20mA each, total 40mA
  3. LED WS2812B: 60mA

Total Estimated Power Consumption for Cube: 260mA

Board

  1. Raspberry Pi 4: 2.5A (typical) to 3A (max)
  2. Raspberry Pi Camera 2: 250mA (max)
  3. WS2812B LED Strip (42 LEDs): 60mA per LED, total 2.52A

Total Estimated Power Consumption for Board: ~5.77A

Power Supplies

  1. Lipo 3.7V 1000mAh: Powers Cube components. Estimated runtime:
    • ( \text{Runtime} = \frac{1000mAh}{260mA} \approx 3.85 \text{ hours} )
  2. 5V 3A Adapter: Used for Raspberry Pi 4 and Camera Module.
  3. 5V 2A Adapter: Used for WS2812B LED strips.

Voltage Conversion

For components requiring different voltage levels, use DC-DC converters to step down or regulate voltages as necessary.

Source Files

Source Folder