LabWired The easy way to build hardware
UART device

HC-05 Bluetooth

The HC-05 Bluetooth is a UART device in the LabWired part catalog. Its catalog type is hc-05. It connects to the MCU over UART. The catalog gives a supply range of 3.3–6 V. It has 6 pins. A registered peripheral model runs in the engine: the firmware talks to it over the real bus and gets device-accurate responses.

From the catalog: AT command shell only; no Bluetooth air link.

Key facts

CategoryUART devices
Catalog typehc-05
InterfaceUART
Supply range3.3–6 V
Pins6
DatasheetHC-05 Bluetooth module datasheet

What LabWired simulates

What is simulated

Simulated device model

How it was validated

Built from the datasheet. Implemented from the part’s register documentation and exercised by automated tests. Nothing physical was ever placed next to it.

HC-05 Bluetooth pinout

PinElectrical typeFunction
VCC Power input Supply
GND Power input Supply
TX Output UART transmit (TX)
RX Input UART receive (RX)
STATE Output GPIO
EN Input GPIO

How to simulate the HC-05 Bluetooth in LabWired

  1. Open the Playground at app.labwired.com and place an MCU board.
  2. Add the HC-05 Bluetooth (catalog type hc-05).
  3. Connect VCC and GND to the supply and ground of the board. Use a supply inside the catalog range of 3.3–6 V.
  4. Cross the UART lines: connect TX to the RX pin of the board, and RX to the TX pin of the board.
  5. Connect STATE and EN to free GPIO pins.
  6. Run the firmware. It sends and receives bytes on the simulated UART as on hardware.

Related UART devices

All UART devices · All parts

Modelled from HC-05 Bluetooth module datasheet.

Wire it up in Playground → See the full validation matrix