Callie’s Page


This is my blog from my first semester at ITP. I have since switched to a Notion blog which you can view here.


Fall 2024


Intro to Physical Comp:



Intro to Comp Media:



Hypercinema:






P003 → Week 3 - Tone & Servo Labs



This week I was able to complete the labs without major difficulties.

Playing a single tone
Connecting the speaker and the FSR
Speaker circuit with transistor 

The lab suggests this code:

float frequency = map(sensorReading, 200, 900, 100, 1000);


However, when Noah and I tried to run it with the sensor reading mapped to 200 - 900, we found that the tone would not play. This made some sense, as the sensor readings we were seeing did range from 0-900. But we still weren’t sure why nothing would play at all with a tighter range like 200-900.

We did some troubleshooting with Nikolai and think that the map function might be breaking the code when it is mapped from too tight of a range, because it could output a negative value. Is this true?
Playing a song on the speaker
Connecting the servo to a FSR