Project 15 XGO Dance Show

Ⅰ. Teaching Aims

Use both the on-board microphone and capacitive touch (Logo) to achieve dual-channel sensing input.
Mapping relationship:

• Touch → Crawl (crawl forward) • Sound → Dance (dance)
Integrate LED dot matrix “emoji” and buzzer waiting to make the feedback more intuitive.
Practice multiple if / else and different waiting times, and experience the switching of “action fragments”.

XGO + Foxbit + MicroBlocks IDE.
XGO battery power ≥ 60 %. The desktop is spacious, making it convenient to clap hands and touch during the test.
MicroBlocks status bar shows a green dot, XGO-lite extension is loaded and the development board model is Foxbit.


Functions	Detect Logo touch (Boolean)
Tips	When it is true, directly enter `if`

Functions	Return ambient sound pressure (0-100 or 0-255)
Tips	It is recommended to first measure values by `print`

Functions	LED dot matrix preset emojis
Tips	happy😊, sad😞, heart❤️ …
`scroll text … pausing …`
Functions	Scroll text
Tips	The smaller the `pausing` is, the faster the scrolling speed will be

Functions	Logic branch
Tips	It can be nested multiple ones

Functions	Pause before the action and text are completed
Tips	It is suggested to change it to a variable for easier parameter adjustment

Functions	Crawl forward
Tips	If you cannot find it in the list, try Crawl1

Functions	Dance in place
Tips	If the firmware is different, it might be called Dance1

Functions	The body slides up and down
Tips	Positive for up and negative for down, doing a “tail swing”
`play tone … Hz … ms`
Functions	Buzzer sounds
Tips	440Hz 500ms is standard A

Online code: Click here

Change wait 5000 ms and wait 2000 ms to variables touchDelay / soundDelay, and define them at once at the top for convenient parameter adjustment in the future.
Change the sound threshold to 60 and print the current sound pressure print fb loudness in the else branch, so as to find a threshold that is more suitable for your classroom.
Replace the “sad emoji” with the scroll text "COME ON", and guide the interaction among classmates.
No applause? Let’s change “slide body up” to “slide body down” (slide body Z by -10 mm) and use the 😴 emoji to inject a note of humor.

Questions	Possible causes	Solutions
The touch is not sensitive	Dry finger / Poor grounding	Press the Logo for 2 s; touch the metal to “power on” the human body
The sound threshold is difficult to reach	Noisy environment	Raise the threshold to 65-70; Or shorten the microphone sampling window
`Crawl` / `Dance` blocks are missing	Firmware version differences	Look for synonymous blocks in the action panel, such as `XGO action Crawl1`
LED emojis flash	The loop is too fast, resulting in repeated refreshing	Before entering the same state, detect the current emoji first, or update only when the state changes