MQ-9 Sensor Inquiry

flux

1:30

Providing circuit connections.

Clarifying circuit connections.

Defining circuit connections.

Here’s the net‐list for your external sensor board. Each net shows the connector pin and all sensor/LED pins that tie to it:

Table

NetConnections
5 VCN1 Pin 1, U1 VCC_heater, U5 VCC, LED1 Anode, LED2 Anode
3.3 VCN1 Pin 2, U2 VCC, U3 VCC, U4 VCC
GNDCN1 Pin 3 & Pin 4, U1 GND, U2 GND, U3 GND, U4 GND, U5 GND, LED1 Cathode, LED2 Cathode
SDACN1 Pin 5, U2 SDA, U3 SDA
SCLCN1 Pin 6, U2 SCL, U3 SCL
MOSICN1 Pin 7, U4 MOSI
MISOCN1 Pin 8, U4 MISO
SCKCN1 Pin 9, U4 SCK
SSCN1 Pin 10, U4 NSS/SS
TXCN1 Pin 11, U5 RX
RXCN1 Pin 12, U5 TX
ENCN1 Pin 13, goes to your main‐board MCU enable control
Let me know if you’d like me to implement these net connections in your Flux schematic.
209 days

is applying changes...

0:02

209 days
avanidhawalikar

avanidhawalikar

which pin of LED is anode? upper or lower
209 days

flux

0:39

Identifying LED Anode.

Analyzing the schematic.

Determining LED Anode Pin.

For LED1, the upper pin (pin 1) is the anode, and the lower pin (pin 2) is the cathode.
check forward voltage
calculate resistor value
find resistor part
wire LED and resistor
209 days

Ready.

Sign up to send

To get started, talk to Flux or create a New Document.

Documents

    Documents are markdown text files which describe project goals, capture details, or even simulation outputs.

    Assets

    No assets added.

    Awkward Fuchsia Warp Drive

    Awkward Fuchsia Warp Drive thumbnail
    Welcome to your new project. Imagine what you can build here.

    Properties

    Properties describe core aspects of the project.

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $2.41–$5.60

    Digi-Key

    $2.65–$6.42

    LCSC

    $23.77

    Mouser

    $4.83

    TME

    $0.00

    Verical

    $5.01–$6.37

    Controls