communications 234 in stock
Communication Modules — UART, I²C, SPI, RS485, CAN, Ethernet & More
Connect devices, sensors, and microcontrollers with our full range of communication modules. From simple UART bridges and I²C/SPI expanders to robust RS485, CAN bus, and Ethernet networking, these modules enable reliable data transfer for automation, IoT, robotics, and industrial systems.
UART • I²C • SPI • RS485 • CAN Bus • Ethernet • Level Shifters • Serial Bridges
Why shop communication modules here
- Versatile interfaces: supports most MCU communication standards
- Maker-friendly: plug-and-build with Arduino, ESP32 & Raspberry Pi
- PH support: wiring, protocols & troubleshooting help
Popular uses
- Connecting sensors & displays to microcontrollers
- Industrial RS485 & CAN automation networks
- Long-distance wired communication systems
- Ethernet-enabled IoT dashboards & PLC interfacing
Recommended add-ons
Featured communication categories
Serial Interfaces
Industrial Buses
- RS485 modules (Modbus-compatible)
- CAN bus transceivers
- Long-distance differential signaling
Networking & Bridges
- Ethernet modules (W5100/W5500)
- USB–serial bridges
- Logic level shifters
Tip: For long-distance wired communication, prefer RS485 or CAN bus over standard UART to avoid noise and signal loss.
Communication module chooser (quick guide)
| Need | Best choice | Notes |
|---|---|---|
| Simple MCU-to-PC connection | USB–UART adapter | Ideal for programming and debugging. |
| Multiple sensors on shared bus | I²C expander | Great for low-pin-count microcontrollers. |
| High-speed peripheral control | SPI interface | Reliable for displays & fast sensors. |
| Long-distance communication | RS485 module | Supports hundreds of meters with differential signaling. |
| Industrial automation | CAN bus module | Used in vehicles, robotics, and PLC networks. |
| Wired IoT or dashboards | Ethernet module | Reliable and stable for servers & monitoring. |
Always check voltage levels, bus termination, and pin compatibility before wiring communication modules.
Starter bundles
- Industrial RS485 Kit: RS485 module + Arduino + terminal cables
- CAN Bus Starter: CAN transceiver + ESP32 board
- Ethernet IoT Kit: W5500 module + Raspberry Pi
FAQ
Are these modules compatible with Arduino/ESP32?
Yes—most communication standards like UART, I²C, SPI, RS485, and CAN work with common microcontroller libraries.
Which module should I use for long-distance wiring?
Use RS485 or CAN bus, as they resist noise and support long cable lengths.
Do I need level shifting?
Yes, if connecting 5V and 3.3V devices—use a logic level shifter to avoid damage.
Do you ship nationwide?
Yes—fast shipping anywhere in the Philippines with same-day processing for in-stock items.
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