• Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
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    Ground
    A common return path for electric current. Commonly known as ground.
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    Net Portal
    A net identifier used to create connectivity to other Net Portal with the same designator. #portal
    jharwinbarrozo
    43.0M
  • Power Net Portal
    Power Net Portal
    Power net portal is a special schematic object used to define a power or ground net. Power ports allow you to conveniently indicate a power net at any location in the design. Power nets of the same designator automatically connect throughout your design #portal #power
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  • Generic Resistor
    Generic Resistor
    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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    1.5M
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    1.5M
  • Generic Inductor
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  • RMCF0805JT47K0
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    jharwinbarrozo
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  • 875105359001
    875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
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  • CTL1206FYW1T
    CTL1206FYW1T
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SC - Selection-2

SC - Selection-2
Description

Created
March 8th 2024
Last updated by nico
a year ago
1 Contributor(s)
nico

Controls

Properties

Sensors
High-precision temperature sensor, PM2.5 sensor, VOC sensor, and CO2 sensor.
Connectivity
Wi-Fi 802.11 b/g/n
Power Requirements
Rechargeable battery with a USB-C charging port.
Accuracy
Temperature sensor accuracy of ±0.5°C, PM2.5 sensor accuracy within ±10 µg/m³
Battery Life
Minimum of 30 days on a single charge under normal usage.
Operating Temperature
-10°C to 50°C
Humidity
10% to 90% non-condensing
Capacitor Derating
Derate max voltage to 60%
Resistor Tolerance
All resistors should be 1%

Availability & Pricing

DistributorQty 1
Digi-Key$5.42–$9.11
LCSC$72.53
Mouser$62.01

Assets

    Simulation

    µs

    Simulation Speed

    check that all the components in my design can work well with each other.
    nico

    nico

    @copilot check that all the components in my design can work well with each other.
    10mo

    copilot

    To evaluate whether all components in your "EcoSense IoT Environmental Monitor" design can work well together, I'll analyze the interconnectivity and compatibility based on their functionalities, operating voltages, and communication protocols. Here are my observations and assumptions:
    1. Microcontroller (MCU)

    • Designator: U1

    • MPN: STM32L476ZGT6P

    • Manufacturer: STMicroelectronics

    • Notes: This is a powerful and versatile MCU with a wide range of I/O options supporting various communication protocols. It operates at 1.71V to 3.6V, making it suitable for use in battery-powered applications.

    2. Sensors

    • Temperature, Humidity, Pressure: BME280 (U3)

      • Interface: I2C/SPI

      • Operating Voltage: 1.71V to 3.6V

    • PM2.5: PMS5003 (U4)

      • Interface: Serial

      • Operating Voltage: 5V

    • CO2: SCD41-D-R1 (U5)

      • Interface: I2C

      • Operating Voltage: 3.3V to 5V

    3. Connectivity Module

    • Designator: U2

    • MPN: NORA-W106-00B

    • Manufacturer: U-blox

    • Interface: SPI, GPIO, UART

    • Operating Voltage: VCCIO: 1.8V-3.6V, VCC: 3.0V-3.6V

    4. Power Management IC (PMIC)

    • Designator: U6

    • MPN: LTC3401EMS#TRPBF

    • Manufacturer: Analog Devices

    • Function: Boost Converter

    • Operating Voltage: 2.5V to 4.5V input for regulated output voltage

    5. USB-C Charging Port

    • Designator: J1

    Observations

    1. Voltage Compatibility: The majority of your components can operate at 3.3V, which is beneficial for creating a unified power system. The exception is the PMS5003, which requires 5V. Given your design includes a PMIC (U6), it's feasible to step up from a lower voltage battery to meet the 5V requirement for PMS5003 and use a 3.3V rail for the rest of the components.

    2. Communication:

      • The STM32L476ZGT6P supports multiple communication protocols, allowing for easy integration with the chosen sensors and connectivity module.

      • The PMS5003 uses Serial communication, which can be directly interfaced with the MCU's UART ports.

      • The BME280 and SCD41-D-R1 both support I2C, allowing for shared bus configuration.

      • The NORA-W106 module can be interfaced through SPI or UART, depending on the application requirements.

    3. Power Management: Using the LTC3401EMS#TRPBF for power management seems appropriate. Given your battery life requirement, careful consideration should be given to power efficiency and the sleep modes of the MCU and the sensors.

    Recommendations

    • Step 1: Verify that all components can operate within the desired temperature range (-10°C to 50°C) and humidity (10% to 90% non-condensing).

    • Step 2: Implement voltage regulation to convert battery voltage to 3.3V for the majority of the components and 5V for the PMS5003.

    • Step 3: Ensure that resistor tolerances and capacitor derating guidelines are followed across the design.

    • Step 4: Design the schematic to minimize noise, especially for the analog and RF components.

    Conclusion
    Based on the given information, all components seem compatible with each other, given the correct interfacing and power management strategies. It will be important to carefully design the power supply and communication architectures to meet the project's technical requirements and constraints.
    10mo
    @copilot check the core components in the project against this block diagram and...
    nico

    nico

    @copilot check the core components in the project against this block diagram and the product requirements.

    Image

    10mo

    copilot

    Based on the provided block diagram and the project requirements, let’s compare the core components listed in the project with what is represented in the diagram:

    1. USB Interface: The block diagram shows a USB interface that is expected to be used for charging the device. Project requirements indicate that there should be a rechargeable battery with a USB-C charging port.

    2. Battery: The diagram includes a battery as part of the power supply for the device, which is compliant with project requirements stating a desire for minimal 30-day battery life under normal usage. However, specific battery characteristics like capacity, voltage, and type have not been detailed.

    3. Converter 3V3: There is a 3.3V converter shown in the block diagram, which aligns with the requirement of having a power supply for the sensors and other components likely requiring a 3.3V supply line.

    4. Temperature and Humidity Sensor: The block diagram includes a combined temperature and humidity sensor, which could correspond to the BME280 sensor described in the project. The BME280 sensor can measure both parameters, aligning with the high-precision requirements stipulated.

    5. CO2 Sensor: The block diagram features a dedicated CO2 sensor. In the project, the SCD41-D-R1 can serve this function and matches the listed requirement of having a CO2 sensor.

    6. VOC Sensor: A VOC sensor is included in the block diagram, but the specific sensor is not identified in the project description. However, the requirement for a VOC sensor is present.

    7. PM2.5 Sensor: The block diagram includes a sensor for PM2.5 measurement, and the project lists the PMS5003, which is a particulate matter sensor capable of detecting PM2.5 and aligning with the specified accuracy requirement.

    8. Microcontroller: The block diagram indicates that a microcontroller will manage the sensors and handle communication. This aligns with the project’s STM32L476ZGT6P microcontroller, which is suitable for processing sensor data and managing device operations.

    9. Wi-Fi: The diagram has a dedicated Wi-Fi block for wireless connectivity, corresponding with the Nora-W106-00B Wi-Fi module listed in the project. This aligns with the requirement for Wi-Fi IEEE 802.11 b/g/n connectivity.

    Overall, the block diagram illustrates a high-level view that correctly represents the core components and their basic relationships as per the product requirements outlined in the project description. However, the interface for the PM2.5 sensor is not specifically shown in the block diagram (it could be either serial or I2C, whereas the Wi-Fi module is directly connected to the microcontroller, suggesting a serial or other communication interface beyond just I2C.
    I would recommend verifying the accuracy of the interface types (e.g., I2C, serial, etc.) and considering the inclusion of additional circuitry such as power management and signal conditioning components to ensure robustness and adherence to all requirements such as voltage derating and resistor tolerances. Additionally, the J1 component, likely the USB-C port, should be evaluated to ensure compliance with USB power delivery and data standards for the charging functionality.
    10mo
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    Checks that the power traveling across a given resistor is under its rating with 50% headroom.
    Learn more
    Checks that IC pins that require pull up or pull down resistors have them.
    Learn more
    Checks that capacitors have appropriate voltage ratings to prevent overheating and ensure reliable circuit operation.
    Checks that all parts have a part number and are available from distributors.
    Reports copper elements that are shorting.
    Designator
    PMS5003 U4
    Reports nodes that are assigned to a layer that doesn't exist in the layout stackup.
    Designator
    Ruleset
    Layout
    Reports terminals that are not connected properly. NOTE: Only connections to the center of pads are considered valid.
    Reports nodes that are using rules that are not supported anymore.
    Reports layers that have multiple copper fills of different nets. Make sure the Connected Layers rule value of nets with fills is valid.
    Name
    Trace 54d2
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