# Remote Control

With Wi-Fi and User Cloud Message, HaloCode can interact with the stage. In this project, we can make a remote control to light up or light off HaloCode's LED ring with stage bulb.

![](/files/-Lpg9cF87961NimwF_0x)

**Enable Upload mode**

![](/files/-Lpg9cF9BTPSQdLN_um8)

**Set the background and sprite**

1\. Delete default sprite Panda

![](/files/-Lpg9cFAI_y2HiEcLhqL)

2\. Under "Background", click "Costumes", and then add background "Office3"

![](/files/-Lpg9cFBOZML-zydMuZC)

3\. Add sprite "bulb", and set the costume to "bulb2"

![](/files/-Lpg9cFCFLxhiu8HUe3E)

4\. Adjust the size of bulb (150% of the original size), and place on the table

![](/files/-Lpg9cFDDbwDGx4ZRuf8)

**Program bulb**

5\. At the bottom of Blocks Area, click "+ extension", and then add User Cloud Message

![](/files/-Lpg9cFEbpF7p8s3MiSW)

6\. Choose Variables block. Click "Make a Variable", and name it "frequency"

![](/files/-Lpg9cFFEOfxHHP1Rajz)

7\. Drag an Events block 当when green flag clicked to the Scripts area, and then add a Variables block set (frequency) to (0)

![](/files/-Lpg9cFGZC5e6HGFsVgM)

8\. Add an Events block when this sprite clicked, a Variables block change (frequency) by (1), and a User Cloud Message block send user cloud message () with value (). Name the message "switch" and add another Variables block frequency

![](/files/-Lpg9cFHKICMcLNwCjXh)

9\. Add a Control block if () then () else (), two Operators blocks () = () and () mod (), a Variables block frequency. Input "2" and "1"

![](/files/-Lpg9cFI0NK0l2wtAnON)

10\. Add two Looks blocks switch costume to (), and choose "bulb-1" and "bulb-2" respectively

![](/files/-Lpg9cFJ0VJTm8wKu60k)

**HaloCode connects Wi-Fi**

11\. Add an Events block when HaloCode starts up, a Wi-Fi block connect to Wi-Fi () password (). Input the network name and password of your Wi-Fi

![](/files/-Lpg9cFKkrOE5pAemp9g)

12\. Add a Control block wait until (), a Wi-Fi block Wi-Fi connected?, a Lighting block all LEDs light up (). Set the color to green. Add another Control block wait (1) seconds, and another Lighting block light off all LEDs

![](/files/-Lpg9cFLnbxL_rsoAWbA)

**HaloCode receives user cloud message**

13\. Add a Wi-Fi block when receiving user cloud message (switch), a Control block if () then () else (), two Operators blocks () = () and () mod (), a Wi-Fi block user cloud message () value. Input "2" and "1"

![](/files/-Lpg9cFM6IdabH9v8Ti6)

14\. Add two Lighting blocks light up all LEDs with color R() G() B() and light off all LEDs

![](/files/-Lpg9cFN2gxLJqPMFQyJ)

15\. Upload the program

![](/files/-Lpg9cFOOU3bzd0_MSim)


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