Chat
Welcome to Flux
Treat Flux like your intern. Tell it what you'd like to build and it'll get to work. You can also ask it questions, brainstorm ideas, and teach it your preferences. Learn More
Explain this part
Write a part description
Describe each pin
Verify Part Details
Recommend similar parts
Check availability & lifecycle
how can I make SDA and SCL I2C connection
2y
To establish I2C communication, you need to make the following connections:
- Connect the SDA pin of your I2C master device (for instance, a microcontroller) to the SDA pin of your I2C slave device (like a sensor). In your case, refer to your board's documentation to find out which pin, typically marked SDA, should be used for SDA signal of I2C.
- Similarly, connect the SCL pin of your I2C master to the SCL pin of your I2C slave. Find out the corresponding pin for SCL signal of I2C according to your board's documentation.
- Connect the ground pin of your I2C master to the ground pin of your I2C slave to ensure both devices share a common ground.
It's important to note that:
- I2C is a bus system that requires pull-up resistors on the SDA and SCL lines. If not already internally pulled up, make sure to include these in your circuit.
- The board used might have specific pins already dedicated for I2C communication. Please check your board's datasheet to confirm this.
Given your project description where SDA and SCL are mentioned as Designator, assuming SDA is connected to J4:Pin_2, and SCL is connected to J4:Pin_3, for a standard I2C connection:
- The SDA line on your board (J4:Pin_2) would connect to the SDA line on the device you are trying to communicate with,
- The SCL line on your board (J4:Pin_3) would connect to the SCL line on the device.
- If there are multiple devices, remember that I2C is a bus, so all SDA lines can be connected together, and all SCL lines can be connected together.
Note that this answer is under the assumption that the device you're newly trying to connect supports I2C. Always remember to check the datasheet for your specific devices because the connections may vary.
2y
What is the better IO pin to connect I2C connection
2y
Choosing the appropriate I/O pin for your I2C connection can be quite specific to the microcontroller you're using. Each microcontroller has a specific set of pins that support I2C communication by having built-in pull-up resistors and the ability to switch between input and output dynamically, which is required for the open-drain configuration used in I2C.
In your project, the ESP32-C3-WROOM-02-N4 microcontroller from Espressif Systems is used as the microcontroller (or U1 in the diagram). According to its datasheet, the ESP32-C3 series have dedicated pins for I2C communication. Specifically, you can leverage any GPIO for I2C, but generally, the default I²C pins on ESP32 are:
- SDA: GPIO21
- SCL: GPIO22
However, it appears these I/Os are not available in your project schematic. In that case, you can choose to configure any available general-purpose I/O (labelled as IO[number], e.g., IO4, IO5, IO6...) in software to act as SDA and SCL pins.
Please ensure you configure your software to use the right pins for I2C and remember to connect pull-up resistors (usually in the range of 4.7k ohms to 10k ohms) on the SDA and SCL lines as I2C relies on an open-drain or open-collector configuration.
Always check the specification in the datasheet since pin assignments can change based on the specific part number of the ESP32 module.
2y
3
CHECK RESISTOR VALUES!
CHECK RESISTOR VALUES!
2y
6
how do I connect J2 and IC2?
2y
To connect the J2 and IC2, you will need to determine the functional relationship between them. The information you've currently provided doesn't describe a specific role for IC2 or J2, so I'll make some typical assumptions.
Assumption:
- J2, as a connector, might be a power source or acting as an output to supply power.
- IC2, an Integrated Circuit, could be a simple power management IC or another important functional IC which requires power.
Here's a simple connection method:
-
Connect the power supply pin of IC2 (normally named as VCC, VIN, or VDD) to the POS (assuming as positive supply) of J2.
-
Furthermore, it's crucial to connect all your GNDs together, connect the ground pin of IC2 (normally named as GND) to the NEG of J2.
Please note that this is an oversimplified connection, and the actual method could vary depending on the exact function and requirements of your IC2 and J2. For example, some ICs could require additional components (like decoupling capacitors) between power pins and GND.
Let me know the specific usage or even part numbers of IC2 and J2 for more detailed help.
2y
2
how do I connect U1 and J4?
2y
To connect U1 (ESP32-C3-WROOM-02-N4) and J4, we need to know the exact purpose of the connection. But, assuming you have mentioned J4 which has four pins labeled Pin_1, Pin_2, Pin_3, Pin_4, and you want to have a standard I2C communication between both, consider the following.
This could be achieved by connecting:
- The SDA net to U1:IO18 and J4:Pin_2
- The SCL net to U1:IO19 and J4:Pin_3
- GND between U1 and J4
- 3.3V to U1:3V3 and J4:Pin_1
Please remember to note down the connection details and power requirements of the specific device you're connecting to the ESP32 module.
These are common connections for I2C communication, and the connection type may vary if you want a different communication protocol (like UART or SPI) or some other interconnection.
2y
4
U0RXD
3V3_EN
ESP_BOOT
U0TXD
SDA
U0RXD
USB_D-
SGP41_EN
GND
USB_D-
3V3_USB
USB_D+
IO7
IO10
IO10
SCL
USB_D+
U0TXD
USB_D+
SHT40_EN
ESP_EN
1V8_EN
SCD41_EN
SDA
+5V
USB_D-
SCL
ESP_BOOT
J1 GND - IC3 GND
ESP_EN
IO8
C5
Capacitance
100pF
L1
Inductance
2.2uH
C1
Capacitance
3.3nF
+5V
C3
Capacitance
22uF
R8
Resistance
10kΩ
D1
Capacitance
12pF
IC1
+5V
R2
Resistance
Resistance
+5V
3V3_USB
C4
Capacitance
1uF
C6
Capacitance
0.1uF
R9
Resistance
10KΩ
C2
Capacitance
10uF
C8
Capacitance
100pF
R14
Resistance
200 Ω
R3
Resistance
10kΩ
+5V
3V3_USB
R5
Resistance
100KΩ
3V3_USB
3V3_USB
R10
Resistance
10KΩ
R4
Resistance
Resistance
SW1
C10
Capacitance
0.1uF
SW2
IC3
C11
Capacitance
10uF
C7
Capacitance
10uF
LED3
C9
Capacitance
10uF
R12
Resistance
5.1kΩ
J2
U1
R11
Resistance
5.1kΩ
Reviews
- Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portaljharwinbarrozo43.0M
- 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 #powerjharwinbarrozo11.4M
- A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibraryjharwinbarrozo1.5M
- 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, 10000uF 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, 220pF, 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 #CommonPartsLibraryjharwinbarrozo1.5M
- A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibraryjharwinbarrozo15.8k
- An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.Terminal
- 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlinkjharwinbarrozo1.2M
- 10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcanjharwinbarrozo1.2M
- Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlinkjharwinbarrozo1.1M
esp-32-module
Welcome to your new project. Imagine what you can build here.
Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Digi-Key | $8.52–$10.23 |
LCSC | $5.23 |
Mouser | $8.69 |
Controls
Welcome 👋
Flux accelerates your PCB design with AI.
Create your account to start using this component and bring your ideas to life.
okanaraz
copilot