🚀 Bluetooth Send Receive SoifGo

This tutorial helps you Bluetooth Send Receive

Soifgo has the capability to send and receive serial Bluetooth data in a controlled manner. Therefore, each transmission and reception must include a key or address—either a number or a text string.

• Sending: The format should include something like port:1
• Receiving: It should be similar, such as volt:24

There are no limitations on sending; this format is used when transmitting data to the microcontroller. However, receiving must include a key or address so that the corresponding configuration button can be displayed.

In the image below, you can see two examples of data transmission:

• Free-form transmission: An arbitrary format used for general purposes.
• Microcontroller-compatible transmission: A structured format used in this example for communication with the microcontroller.

There are two types of Bluetooth data reception:

• Free-form reception
  Mainly used to display the received value.
  Requires an address or keyword to identify the data.

• Numeric (value-based) reception
  Used to receive integer values.
  Requires an address or keyword, just like free-form reception.
  You must define a maximum threshold for the received value.
  The minimum value is 0, and the maximum is the limit you define.
  Only integer values are accepted—decimal values are not allowed.
  In this mode, effects are activated based on the received value.

temp1:128

Sensor Data Transmission via Bluetooth in SoifGo

Another method of Bluetooth transmission in SoifGo allows sending smartphone sensor values to a microcontroller. Currently, three types of sensors are supported:

• Light sensor
• Motion sensor
• Magnetic field sensor

Configuring a Button to Send Sensor Data via Bluetooth

In the next step, go to the Edit mode and add a new button to the interface.

Step-by-Step Setup

1. Set the button’s behavior to Bluetooth Send.
2. In the Address field, enter a label such as: pwm1a: (used here to control motor speed).
3. Click on the Sensor icon and choose the desired input—for example, X-axis motion.
4. Then click on the Address Label (usually titled “Address Value Name”) and select the same address: pwm1a:.

Live Output Format

Once connected to Bluetooth and in Play Mode, the output will be sent in this format:

pwm1a:513

This means the X-axis motion value has been scaled and offset (as configured earlier) and is now transmitted to the microcontroller under the address pwm1a:

Value Adjustment Logic

To ensure compatibility with microcontrollers that do not support decimals or negative numbers, you can configure a scaling factor and offset:

adjusted_value = (original_value × scale) + offset

For example, to send X-axis motion data:

• Multiply the value by 40
• Add 512 to shift the range
• This maps the value into a range of 0–1024, suitable for most microcontrollers

The result is shown in the middle section of the window under "Calculated Value".

Practical Example: Bluetooth Send & Receive

This file provides a working example of Bluetooth communication. After extracting the ZIP archive:

• If you do not already have a project, you can simply replace the entire soifgo folder in your phone’s storage.
• If you do have an existing project, it is sufficient to copy only the contents of the page and icon folders for integration.

This ensures that the Bluetooth send/receive example is properly configured and ready to use within your environment.

Download the soifgo file:

Microcontroller BASCOM & HEX Files

The following file contains both the BASCOM source and the compiled HEX file for the microcontroller. Remember to use the HEX file when programming the device.

• Do not forget to configure the fuse bits for an external crystal oscillator.
• If you encounter issues with BASCOM, you can provide the BASCOM source code to an AI assistant to convert it into Arduino C or any other language of your choice.
• This allows you to customize the firmware for your specific project requirements.

With these files, you can either directly program the microcontroller or adapt the source for alternative development environments.

Download the Bascom and hex file:

Microcontroller & Bluetooth Module Schematic

The following file contains the schematic diagram of the microcontroller and the Bluetooth module. This schematic illustrates the wiring and connections required for proper communication between the two components.

• Use the schematic as a reference when assembling your hardware.
• Ensure that the power supply and ground lines are correctly connected.
• Verify the TX/RX pins between the microcontroller and Bluetooth module for reliable data transfer.

With this schematic, you can confidently set up the hardware portion of your project and integrate it with the provided software examples.

Bluetooth Module Variants

The images illustrate two different versions of the Bluetooth module:

• Top image: Bluetooth module without an auxiliary board, operating directly at 3.3V.
• Bottom image: Bluetooth module with an auxiliary board, adapted for 5V operation.

Use the appropriate version depending on your microcontroller’s voltage requirements and available power supply.

Proteus Project ZIP File

The provided ZIP archive contains the Proteus simulation project. You can use this file to customize and adapt the schematic or layout according to your specific requirements.

• Extract the ZIP archive to access the full Proteus project.
• Open the project in Proteus to modify the schematic, wiring, or component settings.
• This allows you to simulate and test your microcontroller and Bluetooth module setup before building the hardware.

By customizing the Proteus project, you can experiment with different configurations and ensure compatibility with your design goals.

Download the Proteuse_Bluetooth file:

Practical Video: SoifGo Communication with Microcontroller

The video below demonstrates the real-world operation and interaction between the SoifGo system and the microcontroller. It provides a hands-on example of how data is exchanged and processed in practice.

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