I2C Bus Switch Expansion Board (TCA9548A, 8-Channel)
8-channel I2C multiplexer that puts same-address devices on separate channels. (Supplier description missing — details to confirm.)
- Material
- PCB & electronic components
- Age range
- 8+
- Category
- STEM Robotics & Electronics
- Customisation
- OEM & ODM available
Specifications, component counts and packaging are configurable. Figures shown reflect our standard configuration.
Key features
- TCA9548A 8-channel I2C switch — route the bus one channel at a time.
- Solves I2C address conflicts: same-address sensors live on separate channels.
- Standard I2C control from Arduino, ESP32 and micro:bit.
- Note: supplier sheet has no description for this row — full specs to be confirmed.
Frequently asked about this product
Is the I2C Bus Switch Expansion Board (TCA9548A, 8-Channel) compatible with Arduino, ESP32 and micro:bit?
Yes. The I2C Bus Switch Expansion Board (TCA9548A, 8-Channel) talks over a standard I2C/SPI/UART bus at 3.3 V or 5 V logic, so it connects directly to Arduino (UNO/Nano/ Mega), ESP32, ESP8266 and micro:bit boards. Example sketches for Arduino IDE, Mixly and Mind+ are included, and the bus address can be reconfigured when several modules share one bus.
What voltage does the I2C Bus Switch Expansion Board (TCA9548A, 8-Channel) run on?
The I2C Bus Switch Expansion Board (TCA9548A, 8-Channel) runs from a standard 3.3-5 V DC supply (USB or the controller’s 5 V rail). It draws only a few milliamps in normal operation, so it is safe to power from the controller board itself for classroom builds.
What projects is the I2C Bus Switch Expansion Board (TCA9548A, 8-Channel) good for?
The I2C Bus Switch Expansion Board (TCA9548A, 8-Channel) is built for STEM and robotics education: classroom demonstrations, science-fair projects, robotics club builds and competition robots. It pairs with the rest of our module range — same connectors, same voltage, same toolchain — so students move from first circuit to competition robot without changing platforms.
What certification do the robotics and electronics products carry?
Controller boards, sensors and modules ship with CE marking and RoHS-compliant components, and the range is designed for classroom use under teacher supervision. Product-specific test reports and declarations of conformity are available for distributors on request.
What is the minimum order quantity, and can I get a sample first?
These are standard catalogue lines with stable production, so minimums are low and lead times are short. Samples ship within about a week and are normally credited against a first order. Mixed-SKU cartons are accepted for evaluation orders.
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Need pricing on this line?
Send your target quantity, destination market and any changes you need to artwork, colourway or packaging. We reply with a quotation and the applicable compliance route — usually within one working day.