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Attention! The product has been discontinued. Check others products incategory. |
Product description: BBMagic PWM - Wireless PWM signal controller
Wireless PWM signal controller communicating inBluetooth Low Energy (BLE) standard. It is equipped with3 PWM channelswhich can serve as anLEDdriver, a DC motor speed controller and a servo controller. Power supply voltage of the module isfrom 1.8 to 3.6 V. The device is compatible withRaspberry.
The PWM signal controller is controlled by the Raspberry via Bluetooth.
Operating modes of the BBMagic PWM module - wireless PWM signal controller
The module can work in different modes. The modes of operation can be divided into normal and inverted modes, which can then be divided into the mode with and without gamma correction.
| Name | Mode of operation | Pin 6 status (INV_CONF) | Pin condition 14 (GAMMA CORR) |
|---|---|---|---|
|
1 |
Gamma corrected PWM mode | unconnected | unconnected |
|
2 |
PWM mode without gamma correction | unconnected | connected to GND |
|
3 |
Reverse PWM mode with gamma correction | connected to GND | unconnected |
|
4 |
Reverse PWM mode without gamma correction | connected to GND | connected to GND |
Communication of BBMagic PWM module - wireless PWM signal controller
The module communicates viaBluetooth Low Energy, the communication is encrypted and signed digitally with theAES-128symmetrical block code. The device can communicate directly with RaspberryPivia Bluetooth Smart.
Wireless PWM signal controller.
Operation of BBMagic PWM module - Wireless PWM signal controller
When the BBMagic PWM starts up, it sends out"ALIVE"information every 60 seconds. If the module receives a change request, it sends the message "ALIVE" immediately after the received adjustments have been made. The buffer content is defined in a filebbmagic_lib.h library version 2.0. Sample programs can be downloaded frommanufacturer's website.
| bbm_buf[BBMAGIC_DEVICE_TYPE]. | Specify the type of module that sent the data. |
| bbmm_buf[BBM_PWM_V_SUP] | In order to obtain the voltage in volts, the voltage of the module must be divided by 71. |
| bbmm_buf[BBMAGIC_PWM_ADV_TIME]. | The time after which the next "ALIVE" message is sent, to get the result in seconds multiply the value by 2. |
| bbmm_buf[BBM_PWM_CHIP_TEMP] | The temperature of the chip is given in degrees Celsius. Saved using U2 encoding. |
| bbmm_buf[BBM_PWM_LIGHT]. | Lighting level. Range from 0 to 255. |
| bbmm_buf[BBM_PWM_CH0] | Current PWM signal filling value of channel 0. Range from 0 to 100. |
| bbmm_buf[BBM_PWM_CH1]. | Current PWM signal filling value of channel 1. Range 0 to 100. |
| bbmm_buf[BBM_PWM_CH2]. | Current PWM signal filling value of channel 2. Range 0 to 100 |
|
bbm_buf[BBM_PWM_ADC_1_MSB] bbm_buf[BBM_PWM_ADC_1_LSB] |
Voltage level at input ADC_1 in mV. Older and younger bit. |
|
bbmm_buf[BBM_PWM_WORKTIME_0]. |
The operating time of the module since the last power-on, expressed in seconds. Youngest bit 0. |
|
bbmm_buf[BBM_PWM_WORKTIME_1]. |
The operating time of the module since the last power-on, expressed in seconds. Next bit 1. |
|
bbmm_buf[BBM_PWM_WORKTIME_2]. |
The operating time of the module since the last power-on, expressed in seconds. Next bit 2. |
|
bbmm_buf[BBM_PWM_WORKTIME_3]. |
Module operating time since last power-on in seconds. Oldest bit 3. |
|
bbm_buf[BBM_PWM_FIRM_0] |
Module firmware version, younger bit. |
|
bbm_buf[BBM_PWM_FIRM_1] |
Module firmware version, older bit. |
|
bbm_buf[BBMAGIC_DEVICE_ADDR_0]] |
Module address, youngest bit - LSB. |
|
bbm_buf[BBMAGIC_DEVICE_ADDR_1]. |
Module address, next byte 1. |
|
bbm_buf[BBMAGIC_DEVICE_ADDR_2]. |
Module address, next byte 2. |
|
bbm_buf[BBMAGIC_DEVICE_ADDR_3]. |
Module address, next byte 3. |
|
bbm_buf[BBMAGIC_DEVICE_ADDR_4]. |
Module address, next byte 4. |
|
bbm_buf[BBMAGIC_DEVICE_ADDR_5]. |
Module address, oldest byte 5 - MSB. |
|
bbm_buf[BBMAGIC_DEVICE_RSSI]. |
Radio reception power in dBm. |
Power supply for BBMagic PWM module - wireless PWM signal controller
There are 2 ways to power the BBMagic PWM module
- From any power source with an output voltage of 1.8 to 3.6 V through the wire solder pads numbered 7(+) and 8(-).
- Through the stabilizer it is connected to pads marked 10(+) and 22 / 23 / 24(-) in TO-92 housing.
The manufacturer has prepared ashort guideshowing how to choose the power supply and stabilizer.
|
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 for working withbbm_scanner application. |
Outputs of BBMagic PWM module - wireless PWM signal controller
| Pin | Description |
|---|---|
|
1,8,20,22,23,24 |
The weight of the system. |
|
2 |
Configuration of radio transmission signaling:
|
|
3,4,5 |
PWM signal outputs. |
|
6 |
INV_CONF configuration input:
|
|
7,21 |
Power inputs, supply voltage from 1.8 V to 3.6 V. The current consumption of the unit is 12 mA. |
|
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 |
ADC input. Voltage from 0 to 1.8 V. Resolution of 1 mV. |
|
14 |
GAMMA CORR configuration input:
|
|
15,16 |
Pads for connecting an LED with a serial resistor:
|
|
17 |
START CONF configuration input
|
|
18,19 |
UART interface lines:
|
Specification BBMagic PWM - Wireless PWM signal controller
- Power supply for the module:
- Directly: 1.8 V to 3.6 V
- Stabiliser: output from 2.5 V to 3.6 V
- Three PWM channels with a choice of gamma correction
- PWM signal phase configuration - PNP and NPN transistor controllable
- Monitoring the state of the supply voltage
- Light detector: pads for solder 10k photoresistor
- ADC transmitter: 0 V to 1.8 V
- Chip temperature measurement
- Radio communication indicated by an LED
- Encrypted and digitally signed communication
Useful links |
