Welcome to Jetson CUBE case repository
4. RGB Light Bar Driver
RGB Light Bar Driver
RGB Light Bar DriverI. Learning ObjectivesII. Preparation before experimentIII. Using CubeNano driver library to control RGB light bar1. Import the CubeNano driver library and create the objects.2. Setting up RGB light effects3. Setting the speed of RGB light effects4. Setting the RGB light effect colours5. Setting individual RGB light colours6. Code DemonstrationIV. Using Jupyter lab to control RGB light bar1. Import the CubeNano driver library and create objects2. Setting up RGB light effects3. Setting the speed of RGB light effects4. Setting the RGB light effect colours5. Setting individual RGB light colours6. Deleting objects7. Code Demo8. Jupyter lab basic operationV. Experimental phenomena
I. Learning Objectives
- Master the Jetson Nano series motherboards to control RGB light bars
- Control RGB light bar with CubeNano driver library
- Control RGB light bar through Jupyter lab
II. Preparation before experiment
Install the Jetson CUBE Nano chassis according to the assembly video tutorial, or refer to the "Jetson CUBE Nano Chassis_Hardware Wiring" tutorial document for installation, here we show the chassis expansion board and RGB light bar and fan hardware connections.
| Chassis expansion board | 3 Pin connector | 2Pin connector |
|---|---|---|
| RGB light bar | Fan |
III. Using CubeNano driver library to control RGB light bar
1. Import the CubeNano driver library and create the objects.
The name of CubeNano driver library is CubeNanoLib, use CubeNanoLib to import the library in the programme.
from CubeNanoLib import CubeNano
The CubeNanoLib library functions needed to control the RGB light bar:
xxxxxxxxxxset_RGB_Effect(effect) #设置RGB灯特效#Setting up RGB light effectsset_RGB_Speed(speed) #设置RGB灯特效速度#Setting the speed of RGB light effectsset_RGB_Color(color) #设置RGB灯特效颜色# Setting the colours of RGB light effectsset_Single_Color(index, r, g, b) #设置单个RGB灯颜色# Setting individual RGB light colours
2. Setting up RGB light effects
| set_RGB_Effect(effect): set RGB light effects |
|---|
| Effect value | RGB Light Effect |
|---|---|
| 0 | Turn off effects |
| 1 | Single colour breathing light |
| 2 | runaway light |
| 3 | rainbow light |
| 4 | dazzling light |
| 5 | flowing light |
| 6 | cycling breathing light |
3. Setting the speed of RGB light effects
| set_RGB_Speed(speed): set the speed of RGB light effects |
|---|
| Speed value | RGB light effects speed |
|---|---|
| 1 | low speed |
| 2 | medium speed |
| 3 | high speed |
4. Setting the RGB light effect colours
Note: This function can only set the effect in single-colour breathing light and running light.
| set_RGB_Color(colour): set RGB light effect colour |
|---|
| Color value | RGB light effect color |
|---|---|
| 0 | red |
| 1 | green |
| 2 | blue |
| 3 | yellow |
| 4 | purple |
| 5 | cyan |
| 6 | white |
5. Setting individual RGB light colours
Note: All colours can be combined from different brightness levels of red, green and blue;
| set_Single_Color(index, r, g, b): set a single RGB light colour |
|---|
| parametric | Individual RGB light colour |
|---|---|
| index | Serial number (0 - 13, 255) |
| r | Red (0 - 255) |
| g | Green (0 - 255) |
| b | Blue (0 - 255) |
index parameter: 0-13 corresponds to the serial number of different lamp beads respectively; where index = 255, means set all RGB lamp colours.
r, g, b parameter: 0-255 means different colour brightness level.
6. Code Demonstration
control RGB light bar effects and functions (python interactive interface: each statement needs to be run separately)
xfrom CubeNanoLib import CubeNanobot = CubeNano(i2c_bus=1)bot.set_RGB_Effect(0)bot.set_RGB_Effect(1)bot.set_RGB_Effect(2)bot.set_RGB_Effect(3)bot.set_RGB_Effect(4)bot.set_RGB_Effect(5)bot.set_RGB_Effect(6)bot.set_RGB_Speed(1)bot.set_RGB_Speed(2)bot.set_RGB_Speed(3)bot.set_RGB_Effect(1)bot.set_RGB_Color(0)bot.set_RGB_Color(1)bot.set_RGB_Color(2)bot.set_RGB_Color(3)bot.set_RGB_Color(4)bot.set_RGB_Color(5)bot.set_RGB_Color(6)bot.set_Single_Color(5,0,0,255)bot.set_Single_Color(255,255,255,255)del bot
xxxxxxxxxximport timefrom CubeNanoLib import CubeNanoif __name__ == '__main__':bot = CubeNano(i2c_bus=1)while True:bot.set_RGB_Effect(0) # 关闭特效5秒 Turn off the effect for 5 secondstime.sleep(5)bot.set_RGB_Effect(1) # 单色呼吸灯5秒 Monochromatic breathing lamp for 5 sectime.sleep(5)bot.set_RGB_Effect(2) # 跑马灯5秒 Marquee for 5 secondstime.sleep(5)bot.set_RGB_Effect(3) # 彩虹灯5秒 Rainbow lights for 5 secondstime.sleep(5)bot.set_RGB_Effect(4) # 炫彩灯5秒 Dazzle lights for 5 secondstime.sleep(5)bot.set_RGB_Effect(5) # 流水灯5秒 Running water lamp for 5 secondstime.sleep(5)bot.set_RGB_Effect(6) # 循环呼吸灯5秒 Circulate the lamp for 5 sectime.sleep(5)
Note: To terminate the run you can press Ctrl + Z
IV. Using Jupyter lab to control RGB light bar
In the Jupyter lab interface to create a new file and create the following code block, respectively, edit the following content (Fan_Test.ipynb):
1. Import the CubeNano driver library and create objects
xxxxxxxxxx# 导入CubeNano驱动库 Import the CubeNano driver libraryfrom CubeNanoLib import CubeNano# 创建对象 Create an objectbot = CubeNano(i2c_bus=1)
2. Setting up RGB light effects
xxxxxxxxxxbot.set_RGB_Effect(0) # 关闭特效 Turn off effects
xxxxxxxxxxbot.set_RGB_Effect(1) # 单色呼吸灯 Monochrome breathing light
xxxxxxxxxxbot.set_RGB_Effect(2) # 跑马灯 Marquee
xxxxxxxxxxbot.set_RGB_Effect(3) # 彩虹灯 Rainbow lights
xxxxxxxxxxbot.set_RGB_Effect(4) # 炫彩灯 Dazzling lights
xxxxxxxxxxbot.set_RGB_Effect(5) # 流水灯 Running water lamps
xxxxxxxxxxbot.set_RGB_Effect(6) # 循环呼吸灯 Circulation breathing lights
3. Setting the speed of RGB light effects
xxxxxxxxxxbot.set_RGB_Speed(1) # 低速 low speed
xxxxxxxxxxbot.set_RGB_Speed(2) # 中速 Medium speed
xxxxxxxxxxbot.set_RGB_Speed(3) # 高速 high speed
4. Setting the RGB light effect colours
xxxxxxxxxxbot.set_RGB_Effect(1) # 单色呼吸灯 Monochrome breathing light
xxxxxxxxxxbot.set_RGB_Color(0) # 红色 red
xxxxxxxxxxbot.set_RGB_Color(1) # 绿色 green
xxxxxxxxxxbot.set_RGB_Color(2) # 蓝色 blue
xxxxxxxxxxbot.set_RGB_Color(3) # 黄色 yellow
xxxxxxxxxxbot.set_RGB_Color(4) # 紫色 purple
xxxxxxxxxxbot.set_RGB_Color(5) # 青色 cyan
xxxxxxxxxxbot.set_RGB_Color(6) # 白色 white
5. Setting individual RGB light colours
xxxxxxxxxxbot.set_Single_Color(5,255,0,0) # RGB灯条第6个灯珠显示红色# RGB lights Article 6 lamp beads are displayed in red
xxxxxxxxxxbot.set_Single_Color(255,255,255,255) # 所有RGB灯珠显示白色# All RGB beads are shown in white
6. Deleting objects
xxxxxxxxxx# 删除对象 Delete the objectdel bot
7. Code Demo
8. Jupyter lab basic operation
If you find that the code runs abnormally, it is recommended that you follow the steps in the figure once, and then retest the code block.
V. Experimental phenomena
Call the functions in the CubeNano driver library to achieve the corresponding phenomenon, in which you need to set the RGB light effects before setting the colour and speed of the RGB light effects.
For example, after executing the function "Set single RGB light colour", directly using "Set RGB light effect colour" will not take effect, you need to "Set RGB light effect 1 or 5" first. effects 1 or 5" and then "set RGB light effect colour".
(The effect of using Jupyter lab to control the RGB light bar can be seen in the demo video under this folder.)