• Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
  • Ground
    A common return path for electric current. Commonly known as ground.
  • Net Portal
    A net identifier used to create connectivity to other Net Portal with the same designator. #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
  • 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
  • Generic Capacitor
    A generic fixed capacitor 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 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
  • RMCF0805JT47K0
    47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
  • 875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
  • CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
esp32
3.3v
R1
Resistance
4.7k Ω
3.3v
BME688
3.3v
C2
Capacitance
100n F
R2
Resistance
4.7k Ω
C1
Capacitance
100n F

Resulting Azure Universal Remote

Resulting Azure Universal Remote
Description

Created
April 28th 2024
Last updated by shrutej27
5 months ago
1 Contributor(s)
shrutej27

Controls

Properties

Availability & Pricing

DistributorQty 1
Arrow$6.12–$6.12
Digi-Key$6.30–$12.04
LCSC$10.35
Mouser$12.03
Verical$0.00–$0.02

Assets

    Simulation

    µs

    Simulation Speed

    hey @copilot instead of ESP32-WROOM-32 i want to usse Adadruit esp32 developmen...
    hey @copilot instead of ESP32-WROOM-32 i want to usse Adadruit esp32 development board then how will be the connections?
    9mo
    Switching to an Adafruit ESP32 development board for your project involves considering the pinout differences between the Adafruit board and the ESP32-WROOM-32 module you initially planned to use. Adafruit ESP32 boards typically come with a user-friendly pinout that might slightly differ from the Espressif's ESP32-DEVKITC you were using. While I don't have the exact pinout of the specific Adafruit board you're planning to use, most Adafruit ESP32 development boards follow a standardized pinout for core functionalities.
    Assuming you're using a common Adafruit ESP32 board such as the HUZZAH32, the main connections for power, sensors (BME688), the CD74HC4066 analog multiplexer, and the RAK811 LoRa module would remain conceptually similar but will need to be mapped to the corresponding pins on the Adafruit board.
    Here's a generalized connection guideline based on typical Adafruit ESP32 board pin functionalities. Please adjust these connections based on the exact pinout of your Adafruit board:
    Power Connections:
    • Connect the Adafruit ESP32 3V33V3 (3.3V output) to the power supply pins of the BME688 sensors, CD74HC4066, and RAK811 LoRa module. This provides the necessary power to each of these components.
    • Connect the Adafruit ESP32 GNDGND to the ground pins of the BME688 sensors, CD74HC4066, and RAK811 LoRa module to complete the power circuit.
    Sensor (BME688) Connections to CD74HC4066:
    • Assume to digitalize the analog sensor data, you'll use multiple GPIOs for selecting the active channel on the CD74HC4066 and one GPIO (or analog input capable GPIO) to read the sensors' data through the multiplexer. You can use GPIOsGPIOs (e.g., IO13IO13, IO12IO12, IO14IO14, IO27IO27) for channel selection signals to the CD74HC4066 and IO34IO34 (analog input capable) for reading the sensor data.
    RAK811 LoRa Module Connection:
    • Connect the Adafruit ESP32 TXTX pin to the RAK811 RXRX pin and the Adafruit ESP32 RXRX pin to the RAK811 TXTX pin for UART communication.
    Summarized Connections:
    • Power Supply:
      • Connect Adafruit ESP32: 3V33V3 to BME688 sensors, CD74HC4066, and RAK811 VCCVCC.
      • Connect Adafruit ESP32: GNDGND to BME688 sensors, CD74HC4066, and RAK811 GNDGND.
    • BME688 Sensors to CD74HC4066:
      • Assuming usage of IO13IO13, IO12IO12, IO14IO14, IO27IO27 for CD74HC4066 channel selection.
      • Use IO34IO34 for analog data input from the CD74HC4066.
    • RAK811 LoRa Module to Adafruit ESP32:
      • Connect Adafruit ESP32: TXTX to RAK811: RXRX.
      • Connect Adafruit ESP32: RXRX to RAK811: TXTX.
    Final Notes:
    Remember, this is a generalized guideline. The exact pin naming and availability might differ on your specific Adafruit ESP32 board, and you will need to consult the Adafruit board’s datasheet or pinout diagram to map these connections accurately. Additionally, ensure that the logic levels and power requirements are compatible across your components to prevent any damage.
    9mo
    hey @copilot I wanr to connent Adafruit esp32 devlopment board microcontroller with 4 BME688 sensors using CD74HC4066: Type: 4-Channel Analog Multiplexer and RAK811 LORA module
    9mo
    For connecting an Adafruit ESP32 development board with 4 BME688 sensors using a CD74HC4066 4-channel analog multiplexer and a RAK811 LoRa module, you'll follow a systematic approach that involves setting up the multiplexer to read from the four BME688 sensors sequentially and configuring the LoRa module for communication. Here's how you can proceed with these connections:
    1. Power Connections:
    • Adafruit ESP32 to Sensors and Modules: Connect the $3V3$ and $GND$ pins of the Adafruit ESP32 to the VCC and GND pins of the CD74HC4066, RAK811, and all BME688 sensors accordingly.
    2. BME688 Sensors to CD74HC4066:
    Since the BME688 sensors can output data via I2C and the CD74HC4066 is an analog multiplexer, you typically wouldn't use a multiplexer for digital I2C signals without a specific design reason. However, assuming the BME688 sensors are being used in a scenario where analog data is read (assuming a special use case like reading raw analog signals from the sensor for a specific purpose), you can connect each sensor's analog output to one of the CD74HC4066's input channels. If you're referring to I2C communication with BME688 sensors, please note that a multiplexer suitable for I2C should be used instead (like TCA9548A). Assuming an analog use case for instructional purposes:
    • Sensor 1 Output to CD74HC4066: Channel 1 input
    • Sensor 2 Output to CD74HC4066: Channel 2 input
    • Sensor 3 Output to CD74HC4066: Channel 3 input
    • Sensor 4 Output to CD74HC4066: Channel 4 input
    3. CD74HC4066 to Adafruit ESP32:
    Control the CD74HC4066 channel selection via GPIOs from the ESP32 and read the sensor data from the multiplexer's common output:
    • Multiplexer Control (Select lines): Connect ESP32 GPIOs (e.g., IO12, IO13, IO14, IO27) to the CD74HC4066's select inputs (S0-S3) to control which channel is active.
    • Multiplexer Output: Connect the multiplexer's single output to an ADC capable GPIO on the ESP32 (e.g., IO34) to read the analog sensor data.
    4. RAK811 LoRa Module Connection:
    To communicate with the RAK811 LoRa module via UART, connect it like this:
    • Adafruit ESP32 TX (e.g., IO17) to RAK811 RX
    • Adafruit ESP32 RX (e.g., IO16) to RAK811 TX
    Summarized Connections:
    • Power Connections:
      • Adafruit ESP32: $3V3$ to each BME688 VCC, CD74HC4066 VCC, RAK811 VCC
      • Adafruit ESP32: $GND$ to each BME688 GND, CD74HC4066 GND, RAK811 GND
    • BME688 Sensors to CD74HC4066:
      • Connect each sensor's analog output to respective CD74HC4066 inputs $(not typically applicable for I2C data from BME688)$
    • CD74HC4066 to Adafruit ESP32:
      • Connect $CD74HC4066:S0-S3$ to $ESP32:GPIOs$ (e.g., IO12, IO13, IO14, IO27)
      • Connect $CD74HC4066: Common Output$ to $ESP32:ADC Input$ (e.g., IO34)
    • RAK811 LoRa Module to Adafruit ESP32:
      • Connect $Adafruit ESP32:TX$ (e.g., IO17) to $RAK811:RX$
      • Connect $Adafruit ESP32:RX$ (e.g., IO16) to $RAK811:TX$
    Additional Considerations:
    • Ensure that your Adafruit ESP32 development board GPIOs are correctly configured for their roles (ADC inputs, UART communication, digital outputs for multiplexer control).
    • For I2C sensors like BME688, consider using a digital I2C multiplexer if you need to handle multiple sensors over I2C with limited pins.
    • Always double-check the datasheet for each component for any specific electrical requirements or limitations.
    This guide assumes you are using an analog output from the BME688 sensors for illustrative purposes. If your application involves standard I2C communication with the BME688 sensors, consider using an I2C multiplexer instead of an analog multiplexer like the CD74HC4066.
    9mo
    hey @copilot I wanr to connent ESP32-WROOM-32 microcontroller with 10 BME688 se...
    hey @copilot I wanr to connent ESP32-WROOM-32 microcontroller with 10 BME688 sensors using CD74HC4066: Type: 4-Channel Analog Multiplexer and RAK811 LORA module
    9mo
    To connect an ESP32-WROOM-32 microcontroller with 10 BME688 sensors using a CD74HC4066 (a 4-channel analog multiplexer/demultiplexer) and integrate a RAK811 LoRa module for communication, follow these steps. Given the nature of your components and the task you want to accomplish, we will need to use multiple CD74HC4066 chips due to the 4-channel limit per chip to handle the 10 BME688 sensors. This setup assumes the BME688 sensors communicate via I2C, which is a common interface for such sensors. If they use a different interface, please adjust accordingly.
    Assumptions
    • The BME688 sensors use the I2C interface.
    • A single ESP32-WROOM-32's I2C bus will be shared among the sensors, utilizing the CD74HC4066 chips to selectively connect each sensor.
    • Since the ESP32 has limited I2C buses, and assuming we want to multiplex the I2C signal to communicate with numerous sensors, we can use the analog switch capabilities of the CD74HC4066 for this purpose.
    • The CD74HC4066's channels will be used to switch the SDA (Data Line) of the I2C bus, while the SCL (Clock Line) can be commonly connected to all sensors since it is only used to synchronize data transfer and doesn't interfere with multiplexing.
    • The RAK811 module will be connected to the ESP32 via a UART (Serial) interface for LoRa communication.
    Connections ESP32-WROOM-32 to CD74HC4066 (Multiplexing Setup)
    To connect 10 BME688 sensors, you will need 3 CD74HC4066 chips (since each provides 4 channels, and 3 chips provide access to 12 channels, enough for 10 sensors).
    1. I2C Bus Setup for BME688 Sensors:
      • Connect ESP32-WROOM-32:GPIO21 (SDA) to CD74HC4066 Chip 1:IN/OUT1, Chip 2:IN/OUT1, and Chip 3:IN/OUT1. These are your SDA lines for each group of sensors.
      • Connect ESP32-WROOM-32:GPIO22 (SCL) directly to all BME688 sensors: SCL pins. Since SCL lines can be common for all devices on the I2C bus.
    2. Control Lines for CD74HC4066 (selecting which sensor to communicate with):
      • You'll need to use GPIO pins from the ESP32 to control the switches. Let's assume GPIOs 25, 26, 27, 32 are used for the first CD74HC4066, GPIOs 33, 14, 12, 13 for the second one, and two more GPIOs (say 4 and 5) for the third chip's first two channels, adequately.
      • For each CD74HC4066, connect a GPIO from ESP32 to each of the CD74HC4066's control pins (A, B, C, and D) to select the sensor to communicate with.
    Interconnecting CD74HC4066 and BME688 Sensors:
    For simplicity, let's focus on connecting one sensor to understand the repeating pattern.
    • Connect CD74HC4066 Chip 1:OUT/IN1 to BME688 Sensor 1:SDA.
    • Repeat similar connections for subsequent BME688 sensors, using OUT/IN2, OUT/IN3, etc., and distributing them across the CD74HC4066 chips as per the available channels.
    ESP32-WROOM-32 to RAK811 LoRa Module:
    • Connect ESP32-WROOM-32:GPIO17 (U2_TXD) to RAK811:RX.
    • Connect ESP32-WROOM-32:GPIO16 (U2_RXD) to RAK811:TX.
    • Ensure that the ESP32 and RAK811 are powered adequately and that any necessary ground connections are made.
    Remarks
    • Remember to configure the ESP32's GPIOs used for CD74HC4066 control as output pins in your code.
    • You will need to write software that sequentially selects each sensor via the CD74HC4066, reads data from it, and then deselects it before moving to the next sensor.
    • The connection recommendations made above are schematic. Ensure to follow proper PCB design practices when laying out these connections, considering trace lengths, interference, and other factors that may affect the I2C signal quality and overall device performance.
    9mo
    hey @copilot can you put up the schematic diagram as you mention above?
    9mo
    I'm sorry for any confusion, but as a text-based AI developed by Flux.ai, I cannot create or display images, including schematic diagrams or PCB layouts directly within this conversation. However, I can guide you through the process of creating the schematic using the Flux.ai electronics CAD program, or any other tool you prefer, based on the connections I've outlined.
    To visualize the schematic based on the previous description, you'd typically follow these steps in your CAD software:
    1. Place Components:
      • Start by placing one ESP32-WROOM-32 microcontroller, three CD74HC4066 chips, ten BME688 sensors, and one RAK811 module onto your schematic workspace.
    2. Connect I2C Bus for BME688 Sensors:
      • Draw lines (nets) from the ESP32's GPIO21 (SDA) to the input/output pins (select one as the input for simplicity, following your CAD tool's convention) of the first channel on each CD74HC4066. This will represent your shared SDA line through the multiplexers.
      • Connect the ESP32's GPIO22 (SCL) directly to the SCL pin of all BME688 sensors, indicating a direct connection for the I2C clock line, which is shared across all sensors.
    3. Draw Control Lines for CD74HC4066:
      • For selecting the active channel on each CD74HC4066, draw nets from ESP32 GPIOs (assuming 25, 26, 27, 32 for the first CD74HC4066; 33, 14, 12, 13 for the second; and 4, 5 for the first two channels of the third) to the control pins (A, B, C, D) of each CD74HC4066 chip.
    4. Connect CD74HC4066 to BME688 Sensors:
      • From each CD74HC4066 output/channel, draw a net to the SDA pin of a BME688 sensor. Organize them so that each sensor is connected to a unique channel across the three CD74HC4066 chips.
    5. Connect ESP32 to RAK811 LoRa Module:
      • Draw a net from ESP32 GPIO17 (U2_TXD) to the RAK811 RX pin, and another from ESP32 GPIO16 (U2_RXD) to the RAK811 TX pin, for UART communication.
    6. Power Connections:
      • Don't forget to connect the power supply lines (VCC) and ground (GND) to all your components as per their requirements. This might involve connecting the 3.3V output from the ESP32 to all CD74HC4066 chips, BME688 sensors, and the RAK811, or providing them with a common power source that matches their operating voltage.
    7. Final Checks:
      • Review all connections for accuracy and completeness. Ensure that all components are connected as intended and check for any electrical rules violations using your CAD tool’s built-in checker if available.
    By following these guidelines, you'll be able to translate the textual connections I described into a functional schematic diagram in your electronics design tool. Remember, creating a schematic properly reduces errors in the prototype and helps visualize the connections better for troubleshooting and future modifications.
    9mo
    Hi! I’m copilot. Think of me like an experienced electrical engineer that can he...
    Hi! I’m copilot. Think of me like an experienced electrical engineer that can help you brainstorm ideas, debug problems, research components, and even make wiring connections for you. Ask me questions like:
    • @copilot I'm designing a PCB for a medical device that measures heart rate and temperature. Can you give me the list of components I will need?
    • @copilot How would I connect these parts to make the LED flash at 1kHz?
    • @copilot can you choose 4 digital pins on the ATMega328P-AU that I have here to use as GPIO given that I am already using some pins for reset, the external clock, UART, and I2C.
    Reach me at any time by tagging me on comments or in the chat with my handle, @copilot.
    9mo
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