The above video shows the Arduino sketch running on a programmed ATTiny. The ATTiny controls two LEDs using a 3V battery and lights these LEDs based on capacitive touch input (the yellow wire that is touched in the video, which then becomes the copper fabric in the headband below). The “resting state” of the circuit/headband is a small, blue LED that pulses over time. When the input is received via the capacitive touch sensor/when the headband is worn, a second LED (10mm bright white) is lit, lighting the headlamp.

Materials:

• 1x ATtiny45
• 1x Arduino UNO (for programming the ATTiny)
• 1x 10uF capacitor
• 1x 10mm white LED
• 1x 5mm blue LED
• 1x 3V / coin cell battery
• 1x button
• 1x 330k ohm resistor
• 1x breadboard
• soldering iron, solder, conductive thread/wire, perfboard

The Circuit / Fritzing Diagram:

The yellow wire in this diagram connects to a piece of conductive material that – when touched – triggers programmed response (in this case, lights the white LED)

I used a HumanCircuit to create this lamp.

The idea was when you touches Lennon’s nose using your nose, he lights up.

He looks cool sitting on my night stand.

I was able to get the capacitive touch sensor working. See video below:

But I wasn’t able to get the AT Tiny programmed. I had it set up like this:

This was the crown I made to use with the AT Tiny…

LAMP HAT

I use head as a switch button for turning on/off, every time someone put this hat on the it will light up. You can wear this hat at night and day time. When you need the light at night you just put the hat on then you will see the light. I use LED strip rap around this hat where it connect to the circuit inside the hat.

Week7_Code_Examples

GETTING STARTED:
Here is the VERY HELPFUL getting started tutorial for working with the ATtiny.

INCLUDED:
Code and schematics for each
Capacitive Sensing
1) CapSense_Arduino_with_LED
Use this with Arduino

2) CapSense_ATTiny
Use this with the ATtiny

3) CapSense_ATTiny_SoftwareSerial
Use this to read sensor values from ATtiny. Here is a helpful tutorial.

Human Circuit
1) HumanCircuit_with_Arduino_LED
Use this with Arduino. Can adapt to ATtiny

2) Touch_ATtiny_Mellis
Use this with ATtiny. Has been finicky for some. Here is the documentation.

MATERIALS
– copper fabric
– conductive thread
– copper tape
– 3V battery
– LED
– solder
– ATtiny45 (human circuit code)

ATtiny + capacitive sensing code w/reset

ATtiny + human circuit code (for some reason it was working just touching one wire and once I built the soft circuit for it, I had to touch the two wires in order to get it to work). This is the one I ended up using for the book lamp.

Materials: 1megaohm resistor, ATtiny, Battery, LED, Conductive tape

I applied the basic capacitive sensor circuit on a sunglasses by connecting the sensor pin to the top of the glasses where touches the wearer’s eye bone.

Whenever people grab the cup cover, the LED light turns on.

Materials: ATtiny, 3v Battery, LED, Conductive tape

In my original idea, this lamp could light up automatically when environment getting dark. When users laying heads on it, the light turns off.

But there is some problem with ATTiny. Finally the lamp can be turned off when laying heads on it. But it can’t light up automatically when environment getting dark.

Circuit Prototype

The heart beats fast when the flower bunch gets close to it.

Code

// —————————————————————————

// Example NewPing library sketch that does a ping about 20 times per second.
// —————————————————————————
#define ledPin 13
#include <NewPing.h>

#define TRIGGER_PIN 12 // Arduino pin tied to trigger pin on the ultrasonic sensor.
#define ECHO_PIN 11 // Arduino pin tied to echo pin on the ultrasonic sensor.
#define MAX_DISTANCE 200 // Maximum distance we want to ping for (in centimeters). Maximum sensor distance is rated at 400-500cm.

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance.

void setup() {
pinMode (ledPin, OUTPUT);
Serial.begin(115200); // Open serial monitor at 115200 baud to see ping results.
}

void loop() {
delay(3); // Wait 50ms between pings (about 20 pings/sec). 29ms should be the shortest delay between pings.
unsigned int uS = sonar.ping(); // Send ping, get ping time in microseconds (uS).
Serial.print(“Ping: “);
Serial.print(uS / US_ROUNDTRIP_CM); // Convert ping time to distance in cm and print result (0 = outside set distance range)
Serial.println(“cm”);

if (uS / US_ROUNDTRIP_CM > 30) { // This is where the LED On/Off happens
digitalWrite(ledPin,HIGH); // When the Red condition is met, the Green LED should turn off

}
else {
digitalWrite(ledPin,LOW);

}
if (uS / US_ROUNDTRIP_CM <= 30 || uS / US_ROUNDTRIP_CM >= 0){

}
else {
Serial.print(uS / US_ROUNDTRIP_CM);
Serial.println(” cm”);
}
delay(3);
}