Weight Estimation System Circuit Design

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Compute Module 4
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162 days

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could you add ethernet to rpi cm4?

@copilot could you add ethernet to rpi cm4?
1y
To add Ethernet to the Raspberry Pi CM4, you will need to properly connect the Ethernet signals between the CM4 and an appropriate Ethernet PHY. The CM4 provides signals typically required for Ethernet connectivity, such as TX, RX, and control signals.
Based on the project components provided, let's connect the relevant Ethernet pins to a standard Ethernet PHY (e.g., Microchip's LAN9514 or Broadcom BCM54213). Here are the steps and connections you need to make:
Steps to Add Ethernet
  1. Choose an Ethernet PHY: Select an Ethernet PHY chipset that supports the required speed (10/100/1000 Mbps) and has the necessary interface.
  2. Make Connections: Connect the appropriate signals between the CM4 and the Ethernet PHY.
Typical Connections
Assuming you're using a typical Ethernet PHY, here are the connections:
Ethernet Tx/Rx Differential Pairs
  • Transmit Pair 0:
    • Connect CM4:ETHERNET_PAIR0_P (Pin 12) to PHY:TXP0.
    • Connect CM4:ETHERNET_PAIR0_N (Pin 10) to PHY:TXN0.
  • Receive Pair 0:
    • Connect CM4:ETHERNET_PAIR1_P (Pin 4) to PHY:RXP0.
    • Connect CM4:ETHERNET_PAIR1_N (Pin 6) to PHY:RXN0.
  • Transmit Pair 1:
    • Connect CM4:ETHERNET_PAIR2_P (Pin 11) to PHY:TXP1.
    • Connect CM4:ETHERNET_PAIR2_N (Pin 9) to PHY:TXN1.
  • Receive Pair 1:
    • Connect CM4:ETHERNET_PAIR3_P (Pin 3) to PHY:RXP1.
    • Connect CM4:ETHERNET_PAIR3_N (Pin 5) to PHY:RXN1.
Control and Miscellaneous Signals
  • LED Signals:
    • Connect CM4:ETHERNET_~LED1 to PHY:LED1.
    • Connect CM4:ETHERNET_~LED2 to PHY:LED2.
    • Connect CM4:ETHERNET_~LED3 to PHY:LED3.
  • Clock and Sync Signals:
    • Connect CM4:ETHERNET_SYNC_IN to PHY:SYNC_IN.
    • Connect CM4:ETHERNET_SYNC_OUT to PHY:SYNC_OUT.
Power and Ground
  • Power Pins:
    • Ensure your Ethernet PHY is powered appropriately, typically needing a 3.3V or 1.8V power supply.
    • You can derive this from the CM4_3.3V(OUTPUT) or CM4_1.8V(OUTPUT) pins if your PHY supports these voltages.
  • Ground Pins:
    • Connect CM4:GND__# to the ground pins of the Ethernet PHY.
Example Connection List
  • Connect CM4:ETHERNET_PAIR0_P to PHY:TXP0.
  • Connect CM4:ETHERNET_PAIR0_N to PHY:TXN0.
  • Connect CM4:ETHERNET_PAIR1_P to PHY:RXP0.
  • Connect CM4:ETHERNET_PAIR1_N to PHY:RXN0.
  • Connect CM4:ETHERNET_PAIR2_P to PHY:TXP1.
  • Connect CM4:ETHERNET_PAIR2_N to PHY:TXN1.
  • Connect CM4:ETHERNET_PAIR3_P to PHY:RXP1.
  • Connect CM4:ETHERNET_PAIR3_N to PHY:RXN1.
  • Connect CM4:ETHERNET_~LED1 to PHY:LED1.
  • Connect CM4:ETHERNET_~LED2 to PHY:LED2.
  • Connect CM4:ETHERNET_~LED3 to PHY:LED3.
  • Connect CM4:ETHERNET_SYNC_IN to PHY:SYNC_IN.
  • Connect CM4:ETHERNET_SYNC_OUT to PHY:SYNC_OUT.
  • Connect CM4:GND__# to PHY:GND.
  • Connect CM4_3.3V(OUTPUT) to PHY:VDD33.
Make sure to refer to the datasheet of the specific Ethernet PHY you are using for pin names and additional required connections (such as MDIO/MDC for management if needed).
Feel free to correct any assumptions or provide more details about the Ethernet PHY you plan to use so I can give you more specific instructions!
1y
How to connect VL806 to this module to have 4 USB3?
1y
To connect the VL806 USB3.0 hub controller to the Raspberry Pi Compute Module 4 (CM4) to provide four USB 3.0 ports, you need to correctly wire the High-Speed Differential Pairs and control signals between the CM4 and the VL806 controller, and also ensure proper power supply connections.
USB 3.0 Overview
USB 3.0 adds SuperSpeed (SS) signals to the USB 2.0 interface, so each USB 3.0 connection requires additional differential pairs for the SS data lines.
Assumptions
  • You have a VL806 USB 3.0 hub controller.
  • You want to connect it to the CM4 to provide four USB 3.0 ports.
Necessary Connections High-Speed Differential Pairs (SuperSpeed TX/RX)
  • USB_SS_TX/RX:
    • Connect CM4:USB_OTG_ID to VL806:OTG (if needed for OTG pin).
    • Connect CM4:USB_P to VL806:USB3_SS_RX_P.
    • Connect CM4:USB_N to VL806:USB3_SS_RX_N.
    • Connect VL806:USB3_SS_TX_P to the USB3 SS TX pair.
    • Connect VL806:USB3_SS_TX_N to the USB3 SS TX pair.
Control Signals
  • Power Enable:
    • If VL806 has a power enable pin, connect it to a GPIO pin on the CM4 for control.
  • Reset:
    • Connect VL806:RESET# to the CM4:RUN_PG pin or another GPIO capable of controlling reset.
  • Clock:
    • Connect a reference clock (usually 25 MHz or 48 MHz) to the VL806 as specified in its datasheet.
USB2.0 Data Lines
  • USB_DP/DM:
    • Connect CM4:USB_P to VL806:USB2_DP.
    • Connect CM4:USB_N to VL806:USB2_DM.
Power and Ground
  • Power Supply:
    • Ensure the VL806 is powered correctly according to its voltage requirements (usually 3.3V or 1.8V).
    • You can supply 3.3V from the CM4_3.3V(OUTPUT) pin or use an external power supply.
  • Ground Connections:
    • Connect all ground pins on the VL806 to CM4:GND to ensure a common ground.
Example Connection List
  • Connect CM4:USB_OTG_ID to VL806:OTG (if required).
  • Connect CM4:USB_P to VL806:USB3_SS_RX_P.
  • Connect CM4:USB_N to VL806:USB3_SS_RX_N.
  • Connect VL806:USB3_SS_TX_P to USB3 port TX_P (external connector TX+).
  • Connect VL806:USB3_SS_TX_N to USB3 port TX_N (external connector TX-).
  • Connect CM4:USB_P to VL806:USB2_DP.
  • Connect CM4:USB_N to VL806:USB2_DM.
  • Connect the VL806 power pins to the CM4_3.3V(OUTPUT) pin.
  • Connect all ground pins (e.g., CM4:GND__#) to the ground pins on the VL806.
  • Optionally, connect VL806:RESET# to CM4:RUN_PG or another GPIO pin for reset control.
Power Considerations
Ensure that the power supply section of the VL806 is properly designed to handle the current requirements of the USB3 ports, especially if all four ports will be active simultaneously.
Clock Input
Check the VL806 datasheet for the correct crystal or clock input specification and ensure the appropriate circuitry is in place to provide this clock.
Verify Connection
It's critical to verify all connections against the specific datasheet of the VL806 and the CM4 IO board schematics. This ensures that signal integrity and power requirements are adequately met.
Feel free to reach out if you need more detailed help with any specific aspect of this setup!
1y
Add vl806 to schematics
1y
To add the VL806 USB 3.0 hub controller to the schematic with the necessary connections to the Raspberry Pi Compute Module 4 (CM4), here are the steps and connections provided in a detailed manner. Below is a connection list to guide the additions.
VL806 USB 3.0 Hub Controller Pinout (Assumed)
For this example, let's assume the following relevant pins for the VL806:
  • VL806:USB3_SS_RX_P and VL806:USB3_SS_RX_N are the SuperSpeed receive differential pairs.
  • VL806:USB3_SS_TX_P and VL806:USB3_SS_TX_N are the SuperSpeed transmit differential pairs.
  • VL806:USB2_DP and VL806:USB2_DM are the USB 2.0 data lines.
  • VL806:OTG is an optional OTG pin.
  • VL806:RESET# is the reset pin.
  • VL806:VDD33 is a 3.3V power supply pin.
  • VL806:GND are multiple ground pins.
  • VL806:CLK_IN is the clock input pin (assuming a 25MHz or 48MHz clock).
Example Connection List
  1. USB SuperSpeed Differential Pairs:
    • Connect CM4:USB_P to VL806:USB3_SS_RX_P.
    • Connect CM4:USB_N to VL806:USB3_SS_RX_N.
    • Connect VL806:USB3_SS_TX_P to the SuperSpeed TX pair on your external USB 3.0 connectors.
    • Connect VL806:USB3_SS_TX_N to the SuperSpeed TX pair on your external USB 3.0 connectors.
  2. USB 2.0 Data Lines:
    • Connect CM4:USB_P to VL806:USB2_DP.
    • Connect CM4:USB_N to VL806:USB2_DM.
  3. Optional OTG Pin:
    • Connect CM4:USB_OTG_ID to VL806:OTG (if used for OTG functionality).
  4. Power and Ground:
    • Connect CM4_3.3V(OUTPUT) to VL806:VDD33.
    • Connect CM4:GND_# to VL806:GND.
  5. Control Signals:
    • Connect CM4:RUN_PG (or another GPIO pin) to VL806:RESET#.
  6. Clock Input:
    • Ensure the correct clock input is connected to VL806:CLK_IN. This might involve an external crystal oscillator circuit (e.g., 25MHz or 48MHz).
Adding Components to the Schematics:
  1. Add VL806 Component:
    • In Flux, add a new component for VL806 if it doesn’t already exist in your library.
    • Define the relevant pins as described above (USB3_SS_RX_P, USB3_SS_RX_N, USB3_SS_TX_P, USB3_SS_TX_N, USB2_DP, USB2_DM, OTG, RESET#, VDD33, GND, CLK_IN).
  2. Make Connections:
    • Connect the pins on the CM4 to the corresponding pins on the VL806 as per the connection list.
Example Schematics Connections:
  • Markdown


    - Connect `P1: USB3_SS_RX_P` to `VL1:USB3_SS_RX_P`
    - Connect `P1: USB3_SS_RX_N` to `VL1:USB3_SS_RX_N`
    - Connect `VL1:USB3_SS_TX_P` to `USB3 external connector TX_P`
    - Connect `VL1:USB3_SS_TX_N` to `USB3 external connector TX_N`
    - Connect `P1: USB_P` to `VL1:USB2_DP`
    - Connect `P1: USB_N` to `VL1:USB2_DM`
    - Connect `P1:USB_OTG_ID` (if used) to `VL1:OTG`
    - Connect `CM4_3.3V(OUTPUT)` to `VL1:VDD33`
    - Connect `CM4:GND_#` to `VL1:GND`
    - Connect `P1:RUN_PG` to `VL1:RESET#`
    - Connect `CLK source to VL1:CLK_IN`
Feel free to correct any specifics or provide further details if additional pins or connections are needed for your particular application.
1y
Someone is typing...
how do I use Flux?

@copilot how do I use Flux?
2y
Flux provides an intuitive interface to design electronic schematics and lay out PCBs. Here's a high-level overview of the key features:
  1. Schematic Design: Flux provides a large library of electronic components you can use in your projects. You can drag these components onto the canvas to start creating your schematic. You can then wire them together according to your designs.
  2. PCB Layout: Once your schematic is complete, you can switch over to the PCB layout mode. Here, you can place the physical representations of your components on your board, and route the electrical connections between them.
  3. Simulation: Flux provides a basic electronic simulation feature. You can use this feature to verify your circuit designs before manufacturing your board.
  4. Manufacturing Exports: Once you are done with your design and have validated it, you can export the necessary files for manufacturing. These include Gerber files, which are accepted by nearly all PCB manufacturers.
  5. Collaboration: Flux allows multiple users to view and edit the same project simultaneously, making it a great tool for team projects.
Here are some more specific resources to help you get started with Flux:
  • If you're new to Flux, consider walking through the tutorials provided in the official documentation [1].
  • Video tutorials and example projects on the official YouTube channel can help you better understand how to use the tool effectively [2].
  • The reference section on the documentation page offers detailed information about the elements of Flux.
  • To ask questions or connect with other Flux users, consider joining their Slack community [3].
If you encounter any specific difficulties or need clarification on any aspects of the software, don't hesitate to ask for help.
2y
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4
how much emmc is available

@copilot how much power does it require
2y
The Raspberry Pi Compute Module 4, at maximum usage, typically consumes around 3 - 5 watts of power. However, the actual power consumption may change based on the utilization of the CPU, RAM, GPU, peripherals and other components.
In terms of the voltage requirements, the Compute Module 4 typically requires two input voltages:
  1. 5V: This is the main supply voltage for the module. It is generally used to power the I/Os and the HDMI interface.
  2. 3.3V: This is used to power the system ICs such as the main processor/RAM, the internal PHYs for the Ethernet and USB, etc.
However, the general recommendation is to closely follow the power requirements specified in the detailed technical datasheets by Raspberry Pi Inc. for the specific variant of the Compute Module 4 that you're using. Please correct me if I made a wrong assumption about your module.
2y
how much power does it require
2y
@copilot how much emmc is available
2y
I'm sorry for any confusion. Concerning the Raspberry Pi Compute Module 4, it is available in different variations. The eMMC (flash storage) capacity can vary from none (Lite version) to 8GB, 16GB and reaching up to 32GB. I would advise checking the exact specifications of your particular model to determine the exact eMMC capacity.
2y
Someone is typing...
5
explain this project.

@copilot explain this project.
1y
This project is a detailed schematic representation of a carrier board for the Raspberry Pi Compute Module 4 (CM4). The Raspberry Pi CM4 is a compact, modular version of the Raspberry Pi 4 that integrates a quad-core ARM Cortex-A72 processor, dual video output, and various interfaces such as PCIe, HDMI, MIPI CSI (camera), MIPI DSI (display), Ethernet, GPIO, etc. Here's a breakdown of what this project includes:
Main Components and Descriptions:
  1. Power Pins:
    • 5V Input:
      • +5V(INPUT): Various pins like Pin 79, 85, and 87 for accepting the main power input.
    • 3.3V Output:
    • Ground (GND):
      • Multiple GND pins spread across the module, for example, GND__46 at Pin 186 as a return path for the current.
  2. PCIe Interface:
  3. SD Card/eMMC Interface:
    • Includes data pins like SD_DAT7 (Pin 70) and control pins like SD_CMD (Pin 62).
  4. Camera Interface (MIPI CSI):
    • Differential pairs such as CAM1_D2_N (Pin 133) and clock signals like CAM1_C_N (Pin 127) for connecting MIPI cameras.
  5. Display Interface (MIPI DSI):
    • Differential pairs for transmission such as DSI0_C_P (Pin 171) for connecting to MIPI displays.
  6. GPIO Pins:
    • General-Purpose Input/Output pins like GPIO8 (Pin 39) for various peripheral connections and custom use.
  7. Ethernet Interface:
  8. HDMI Interface:
    • Includes differential pairs like HDMI1_TX1_P (Pin 152) for display connection via HDMI.
  9. USB Interface:
    • USB connections including data lines like USB_OTG_ID (Pin 101).
  10. Other Interfaces:
    • Connections for I2C, SPI, and other communication interfaces represented by pins like SCL0 (Pin 80) for I2C clock.
Overall Design
  • Power Distribution:
    • The project includes multiple power-in and ground pins to ensure stable and reliable power distribution across all modules and components.
  • High-Speed Interfaces:
    • Controlled impedance pairs for high-speed data transmission in interfaces such as HDMI, Ethernet, PCIe, and USB are noted with their tolerances, pin delays, and skew values.
  • Multiple Connectivity Options:
    • Various I/O and communication pin types (bidi, input, output, and passive) enabling a flexible and highly capable embedded system design.
  • Compliance with Design Standards:
    • The project also considers controlled impedance requirements and tolerances, important for maintaining signal integrity in high-frequency applications.
This schematic is ready to be used as a basis to create a Printed Circuit Board (PCB) layout where physical connections for these various interfaces will be routed, and components will be placed appropriately to build a fully functional carrier board for Raspberry Pi CM4.
If you need further details or clarifications on specific parts or want to proceed with certain connections, let me know!
1y
Someone is typing...
7
responsabilidad social empresarial

@copilot responsabilidad social empresarial
2y
Como asistente de IA especializado en diseño eléctrico y esquemas de PCB, no estoy diseñado para proporcionar una gran cantidad de detalles sobre la responsabilidad social empresarial (RSE). Sin embargo, puedo decirte que la RSE se refiere a las prácticas empresariales que tienen en cuenta el impacto social y ambiental de la empresa. Esto podría abordarse en el desarrollo de hardware electrónico y PCB asegurándose de que los componentes utilizados son sostenibles, los procesos de fabricación son éticos y se minimiza el desperdicio, entre otras consideraciones. Por favor, consulta a un experto en negocios o ética para obtener una descripción más detallada y un asesoramiento más específico.
2y
Someone is typing...
3


  • Ground
    A common return path for electric current. Commonly known as ground.
  • Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
  • Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
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    A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
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    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibrary
  • Generic Inductor
    A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
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    47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
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  • CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink

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Raspberry Pi Compute Module 4

Raspberry Pi Compute Module 4
Description

Created
Last updated by jharwinbarrozo
2 Contributor(s)
jharwinbarrozo
rahul1234

Controls

Properties

Part Type
Integrated Circuit
Manufacturer Part Number
Raspberry Pi Compute 4
Designator Prefix
U
Symbol Style
Parametric

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