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Product description: BBMagic Relay - Wireless Relay Controller
BBMagic Relay is a wireless relay controllercommunicatingin Bluetooth LowEnergy (BLE)standard.It allows you to control 4 relays. It is poweredfrom 1.8 to 3.6 V. Additionally, it is equipped with the possibility ofmonitoring the state of power supply voltage,lightdetector(aftersoldering the photoresistor) and 2ADC channels.The module is compatible withRaspberry Pi.
BBMagic module allows to control 4relayssimultaneously.
Controlling BBMagic Relay module - Wireless Relay Controller
To be able to control the module you need a bluetooth address and a key to be able to add the device to the actor database:
bbm_relay_add("my_rel", "3B5D6868AA98", "2DFDA5070CD284A107A24F7e53572A7B38") ;
and use functions included in the bbmagic_lib_2.0 library. The following command enables the RELAY_0 and RELAY_3 outputs:
bbm_relay_on("my_rel", REL_CH0 | REL_CH3) ;
The module is operated by Raspberry Pi using the bbmagic_lib library.
Operation of BBMagic PWM module - wireless PWM signal controller
When the BBMagic Relay starts up, it sends "ALIVE" information every 60 seconds.If the module receives a request toswitch the relay(s) on or off,it sends the message "ALIVE" immediately after the task is completed. The content of the buffer is defined in the file bbmagic_lib.hlibrary version 2.0. Examples of programs can be found on themanufacturer'swebsite.
| bbmm_buf[BBMAGIC_DEVICE_TYPE]. | Specify the type of module that sent the data. In this case"BBMAGIC_M_RELAY". |
| bbmm_buf[BBM_RELAY_V_SUP]. | Module supply voltage. To obtain the voltage in volts, divide the obtained value by 71. |
| bbm_buf[BBMAGIC_RELAY_ADV_TIME]. | The time after which the "ALIVE" message queue is sent. To hold the time in seconds, multiply it by 2. |
| bbm_buf[BBMAGIC_RELAYS_STATE] | The four youngest bits define the state of the relays. Bit set=relay on, bit zeroed=relay off. Bit0 - Relay0...Bit3 - Relay3. |
| bbmm_buf[BBM_RELAY_CHIP_TEMP] | Chip temperature in degrees Celsius (coding U2). |
| bbmm_buf[BBM_RELAY_LIGHT]. | Lighting level. Given in the range from 0 to 255. |
|
bbmm_buf[BBM_RELAY_ADC_1_MSB]. i bbm_buf[BBM_RELAY_ADC_1_LSB] |
Voltage level at input ADC_1 given in mV, older and younger byte. |
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bbm_buf[BBM_RELAY_ADC_2_MSB]. i bbm_buf[BBM_RELAY_ADC_2_LSB] |
The voltage level. The address of the module, and the input ADC_2 in mV, an older and a younger byte. |
|
bbm_buf[BBMAGIC_RELAY_WORKTIME_0]. |
Module operation time since the last power on in seconds - youngest byte - 0. |
|
bbmm_buf[BBMAGIC_RELAY_WORKTIME_1]. |
Module operation time since the last power on in seconds - next byte - 1. |
|
bbmm_buf[BBMAGIC_RELAY_WORKTIME_2]. |
Module operation time since the last power on in seconds - next byte - 2. |
|
bbmm_buf[BBMAGIC_RELAY_WORKTIME_3]. |
Module operation time since last power on in seconds - next byte - 3. |
|
bbmm_buf[BBM_RELAY_FIRM_0]. |
The firmware version number of the module - a younger byte. |
|
bbmm_buf[BBM_RELAY_FIRM_1]] |
Module firmware version number - older byte. |
|
bbm_buf[BBMAGIC_DEVICE_ADDR_0]] |
Module address, youngest byte 0 -LSB. |
|
bbm_buf[BBMAGIC_DEVICE_ADDR_1]. |
Module address, byte 1. |
|
bbm_buf[BBMAGIC_DEVICE_ADDR_2]. |
Module address, byte 2. |
|
bbm_buf[BBMAGIC_DEVICE_ADDR_3]. |
Module address, byte 3. |
|
bbm_buf[BBMAGIC_DEVICE_ADDR_4]. |
Module address, byte 4. |
|
bbm_buf[BBMAGIC_DEVICE_ADDR_5]. |
Module address, next byte 5 - MSB. |
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bbm_buf[BBMAGIC_DEVICE_RSSI]. |
Received radio signal power in dBm. |
Functions of BBMagic RELAY module - Wireless relay controller
- Control of up to 4 relays
- The function of automatic activation of the output RELAY_0 for 15 minutes after starting the module, configured with pin 17.
- Possibility of monitoring the power supply voltage status.
- Light detector - pads for soldering a 10 kΩ photoresistor - range from 0 to 255.
- Two ADC channels with voltage range from 0 V to 1.8 V and resolution of 1 mV.
- Temperature measurement of the control chip.
- Built-in LED indicating Bluetooth communication - configurable with pin 2.
- The communication is encrypted and signed digitally.
- Simple control with Raspberry Pi using the bbmagic_lib library.
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The manufacturer has prepared the source code of the application allowing to process data from BBMagic modules. They are available on the manufacturer's website in theDownloadtab, additionally prepared a short guide to working withbbmm_scanner application. |
BBMagic Relay module outputs - Wireless Relay Controller
| Pin | Description |
|---|---|
|
1,8,20,22,23,24 |
The weight of the system. |
|
2 |
Configuration of radio transmission signaling:
|
|
3,4,5,6 |
Outputs controlling relays, a transistor is needed for proper operation. |
|
7,21 |
Power inputs, supply voltage from 1.8 V to 3.6 V. |
|
7,8,9 |
The pads are used to solder the stabilizer, in order to supply the module with higher voltage. |
|
10 |
Power input for stabilizer with reverse polarity protection. |
| 11,12 | Soldering pads for 10 kΩ photoresistor. |
|
13,14 |
ADC inputs. Voltage from 0 to 1.8 V. Resolution of 1 mV. |
|
15,16 |
Pads for connecting an LED with a serial resistor:
|
|
17 |
START CONF configuration input
|
|
18,19 |
UART interface lines:
|
BBMagic Relay module specification - Wireless Relay Controller
- Power supply for the module:
- Directly: 1.8 V to 3.6 V
- Stabiliser: output from 2.5 V to 3.6 V
- 4 relay control channels
- Light detector: pads for solderable photoresistor 10 kΩ
- Two ADC channels: 0 V to 1.8 V
- Chip temperature measurement
- Monitoring the state of the supply voltage
- UART line responsible for transmitting and receiving the signal: from 0 V to 5 V
- Encrypted and digitally signed communication
- Communication is indicated by an LED
Useful links |
