copilot

• Voltage: It operates with a coil voltage of 12VDC, which matches the power output net labeled 12V in your project, indicating it's directly compatible with the power supply you're using.
• Contact Configuration: The relay is often a single pole double throw (SPDT), meaning it has a common terminal (COM), a normally open (NO) terminal, and a normally closed (NC) terminal. This allows it to switch a single circuit between two different states.
• Current Rating: While the specific current rating can vary, these types of relays commonly support switching currents up to 10A at 250VAC or 30VDC, making them suitable for controlling moderate power devices.
• Applications: This relay can be used for various applications, including home appliances, office machines, audio equipment, automobile electronics, and in IoT (Internet of Things) devices, especially for switching AC loads or high-power devices.
• Connection to ESP32-H2: The control signal to toggle the relay could be derived from one of the IO pins of the ESP32-H2 module. For example, your project suggests using U1:IO22 to control the relay via a net connected to R1 and an optocoupler (U4), for providing isolation between the microcontroller and the high-power circuit being switched.

copilot

1. Powering the Relay (K1): The relay specified, Ningbo Songle Relay SRD-12VDC-SL-C, operates on a 12V supply. The 12V net is used to energize the relay coil, enabling it to switch the connected load on or off. This is critical for controlling higher power devices or separate circuits that require isolation from the low-voltage control logic.
2. Input to Voltage Regulator (U2): The 12V net is used as the input voltage to the AMS1117-3.3 voltage regulator. This regulator converts the 12V down to 3.3V, which is a suitable power supply for the ESP32-H2 module (U1) and potentially other 3.3V logic components in the project.
3. Powering the AC-DC Converter (PS2): From your schematic description, the 12V seems to come from the Mean Well IRM-03-12 module, an AC-DC converter that converts the AC mains voltage to 12V DC output. This module provides the 12V supply for the project from an external AC source. However, it's mentioned as an output, which means the net labeled as 12V in the circuit actually represents the output from the power supply delivering 12V to other components in the circuit.

copilot

1. ESP32-H2 (U1) :
   • IO1 (pin 2)
   • IO22 (pin 3)
   • IO12 (pin 4)
   • IO11 (pin 5)
   • IO25 (pin 8)
   • IO10 (pin 9)
   • IO5 (pin 10)
   • IO4 (pin 11)

popadics

copilot

1. ICL7109 is a high performance, low power, 12-bit A/D converter. While it doesn't directly accept a PWM signal from analogWrite() for voltage control, you can definitely send digital values from a microcontroller to manage its conversion features. To do this, you will need to digitalWrite to the ICL7109's control lines (chip select, read/write, data, etc).
2. The LM331 is a voltage-to-frequency converter where the output frequency is linearly proportional to the input voltage. So, to control the LM331, you can vary the voltage at the input pin in the range as specified in the datasheet. The analogWrite() function, which produces a PWM signal, can be used to create a varying voltage if passed through a simple RC filter (Resistor and Capacitor in series). Please keep in mind that the frequency output range (1Hz to 1 MHz) is achievable by correctly setting up the external RC components as per the datasheet of LM331.

C
const int lm331Pin = A0;  // The pin connected to LM331 input

void setup() {}

void loop() {
  // Create a PWM signal with value ranging between 0 (0V) and 1023 (3.3V)
  for (int i = 0; i <= 1023; i++) {
    analogWrite(lm331Pin, i);
    delay(10);  // Smooth out transition. Adjust delay as needed.
  }
}

popadics

copilot

1. Segment 1: 1Hz - 10Hz
2. Segment 2: 10Hz - 100Hz
3. Segment 3: 100Hz - 1kHz
4. Segment 4: 1kHz - 10kHz
5. Segment 5: 10kHz - 100kHz

popadics

copilot

1. Segment 1: 0 mV - 40 mV
2. Segment 2: 40 mV - 80 mV
3. Segment 3: 80 mV - 120 mV
4. Segment 4: 120 mV - 160 mV
5. Segment 5: 160 mV - 200 mV

C
const int lm331Pin = A0; //The pin connected to LM331 input

void setup() {}

void loop() {
  for (int i = 0; i <= 15; i++) { //15 gives roughly 200mV as each step is about 13mV
    analogWrite(lm331Pin, i);
    delay(1000); // Maintain each level for 1 second
  }
}

copilot

copilot

1. Start a New Project: When you first log into Flux, you can start a new project by selecting the option to create a new schematic and PCB layout.
2. Designing the Schematic:
   • Drag components from the library onto the schematic canvas.
   • Connect components by drawing wires between their pins.
   • Use labels and nets to make connections clearer and to organize your design.
3. Transitioning to PCB Layout:
   • Once your schematic is complete, you can transition to laying out the PCB.
   • Flux will translate your schematic into a board design, where you can place components physically on the board.
   • Route traces between components, adhering to good layout practices such as minimizing trace lengths and avoiding noise-sensitive traces.
4. Define Board Shape and Size: Use the PCB layout tools to define the shape and dimensions of your board, including any cutouts or mounting holes.
5. Check Design Rules (DRC): Always run a design rule check (DRC) to ensure there are no errors in your schematic or PCB, such as short circuits or traces that are too close together.
6. Generating Output Files: Once the design is finalized and checked, generate the necessary output files for fabrication, such as Gerber files and a Bill of Materials (BOM).
7. Collaboration and Sharing: Flux supports collaboration, allowing you to share your project with team members and get feedback.

• For step-by-step tutorials and guidance, visit the Tutorials and Reference sections of the documentation$36b2c502-0b4a-59ba-b0a5-ec46aaf87ae7$.
• YouTube offers video tutorials and example projects$f4f73a28-c83e-5598-bff3-f06b27d9b1ab$.
• For direct support or to join the community, the Slack channel is highly recommended$0105ac37-3bee-5c69-9a02-0747e954ec94$.

copilot

• U1:(IO22)
• RELAY:(P1)
• R1:(P1)

aeroedward

copilot

C
#define RELAY_CONTROL_PIN 22

void setup() {
    pinMode(RELAY_CONTROL_PIN, OUTPUT); // Initialise the IO22 as an output
}

void loop() {
    digitalWrite(RELAY_CONTROL_PIN, HIGH); // Set the pin high to activate the relay
    delay(1000); // Wait for 1 second (1000 milliseconds)
    digitalWrite(RELAY_CONTROL_PIN, LOW); // Set the pin low to de-activate the relay
    delay(1000); // Wait for 1 second 
}

copilot

• Pin 1 (EN): Enable pin, used to enable or disable the module.
• Pin 2 (IO1): General purpose IO pin.
• Pin 3 (IO22): General purpose IO pin.
• Pin 4 (IO12): General purpose IO pin.
• Pin 5 (IO11): General purpose IO pin.
• Pin 6 (3.3V): Power supply pin, which accepts 3.3V.
• Pin 7 (GND): Ground pin.
• Pin 8 (IO25): General purpose IO pin.
• Pin 9 (IO10): General purpose IO pin.
• Pin 10 (IO5): General purpose IO pin.
• Pin 11 (IO4): General purpose IO pin.
• Pin 12 (NC): Not Connected.

kberti

copilot

1. Visit the manufacturer's website: Go to the Espressif official website. They usually have a dedicated section for their products where you can find datasheets.
2. Search for the product: Use the website's search feature to look for "ESP32-H2-WROOM-03."
3. Look for documentation: Once on the product page, there should be tabs or links for documentation, including datasheets, technical reference manuals, and application notes.
4. Download section: Often, there is a download section where you can directly download the datasheet in PDF format.
5. Third-party websites: If you're having difficulty finding the datasheet on the manufacturer's website, websites like Digikey, Mouser, and Octopart aggregate datasheets and technical documents from manufacturers.