The Basic TScratch kit comes with:
| Component | Quantity |
|---|---|
| TScratch Module | 1 |
| T-Sense LED | 3 |
| T-Sense Button | 3 |
| T-Sense LDR | 1 |
| T-Sense Potentiometer | 1 |
| T-Sense Buzzer | 1 |
| T-Sense NeoPixel | 1 |
| T-Sense Tilt | 1 |
| T-Sense 3-pin Adapter | 1 |
| Micro-Servo | 1 |
| T-Pad | 1 |
| Mini-USB Cable | 1 |
| RJ11 Cables | 6 |
TSense (LED)
About: The LED (Light-Emitting Diode) works when a current is applied. Electrons recombine with electron holes within the LED, releasing energy in the form of photons, which is the light seen. Because of their low energy consumption and small size, LEDs are commonly used in general lighting, in appliances as indication lights,traffic signals. These Led’s are used by
Description: The LEDs comes in a set of 3, with red, green, and blue colours.
Digital or Analog? Digital
Input or Output? Output
TScratch port: 12 (LED) is recommended to new users, but it may be used with any digital port on T-Scratch.
TSense (Button)
About: Buttons may be used to signal the start of a sequence, or to make a change to a currently active program. They are used in a wide variety of devices such as electronic appliances as On/Off switches.
Description: The buttons comes in a set of 3, with red, green, and blue colours.
Digital or Analog? Digital
Input or Output? Input
TScratch port: 3 (BTN) is recommended to new users, but it may be used with any digital port on T-Scratch.
TSense (Buzzer)
About: The buzzer consists of a piezo ceramic element surrounded by a metal vibration disc. When a current is applied to the buzzer, the ceramic disc contracts and expands, causing the surrounding metal disc to vibrate, and producing sound. Buzzers are used in many electronic devices such as smoke alarm systems and phones to signal users.
Description: The buzzer is a matte black circular piece.
Digital or Analog? Digital
Input or Output? Output
TScratch port: 13 (BUZZER) is recommended to new users, but it may be used with any digital port on T-Scratch.
TSense (Tilt)
About: A small ball inside the tilt sensor moves according to gravity. They are commonly used in games (eg. pinball) or any motion-sensitive devices like smartphones.
Description: The sensor consists of a black cylindrical piece. To distinguish it from the vibration sensor, pick it up and shake it; the tilt sensor will produce a rattling sound, the vibration sensor will not.
Digital or Analog? Digital
Input or Output? Input
TScratch port: It may be used with any digital port on T-Scratch.
TSense (Potentiometer)
About: Sliding resistors on the dial allow the output voltage to be adjusted by turning the knob. Potentiometers are commonly used in volume control knobs for electronic devices, or dimmer switches in lighting.
Description: The sensor consists of a small blue dial with an arrow that may be turned.
Digital or Analog? Analog
Input or Output? Input
TScratch port: A2 (POT) is recommended to new users, but it may be used with A1 on T-Scratch as both are analog ports.
TSense (Light-Dependent Resistor)
About: The LDR has a resistor that varies in resistance value depending on the amount of ambient light present; the resistance decreases when the light intensity detected increases. Because of this, they can be used to sense light. They are commonly used in automatic lights (turns on when night falls) and camera shutter controls.
Description: The sensor consists of a small disc.
Digital or Analog? Analog
Input or Output? Input
TScratch port: A1 (LDR) is recommended to new users, but it may be used with A2 on T-Scratch as both are analog ports.
TPad
About: The TPad is a control panel of buttons, each with unique resistance values. They are commonly used in phones and other electronic devices that require a numeric or alphabetical input, or in keyboards and number pads.
Description: The sensor consists of a four buttons arranged in a diamond shape to the left, and two additional buttons in the middle.
Digital or Analog? Analog
Input or Output? Input
TScratch port: Both A1 and A2 can be used with the TPad as both are analog ports.
Servo Motor
About: The servo motor consists of a motor (moving part) with a rotary actuator that produces a rotary motion. It is used in indication dials and any function that requires movement.
Description: The servo consists of a blue box with a translucent white knob. It comes with different types of snap-on arms that can be attached to the knob and rotated, and screws to allow the arms to be attached more securely.
Digital or Analog? Digital
Input or Output? Output
TScratch port: Any of the SRV ports 1-5 on the TScratch module can be used. Users should take care to ensure the servo is plugged in correctly, with the metal contacts facing upwards. Alternatively, note that the brown wire is the designated ground (GND) wire. and that it should always be on the right when plugged into the TScratch module.
PS2 Port Splitter
About: A breakout board that converts the existing PS2 port that consist of 4 signals pins (D7, D8, D12, D13) into 2 separate port with 2 signals pins each (D7 and D8, D12 and D13), mainly for TSense (Ultrasonic) use. The 2 ports are also compatible to all existing digital sensors.
Description: The board consist of a 6-pin female header which is to be inserted into the PS2 Port and 2 RJ11 Port.
Digital or Analog? Digital
Input or Output? Input and Output
T-Scratch port: PS2 port. The 6-pin female header is plugged into the PS2 port, while the 2 ports on the other side can be connected to any other digital sensors. In the case where 2 TSense (Ultrasonic) is plug in, the default pin for Ultrasonic 1 would be D7 (Trigger) and D8 (Echo) whereas Ultrasonic 2 would be D12 (Trigger) and D13 (Echo).
TSense (Ultrasonic)
About: An ultrasonic sensor is an instrument that measures the distance to an object using ultrasonic sound waves. By using a transducer to send and receive ultrasonic pulses, it can estimate an object’s distance from it. By calculating the time taken for the pulses to bounce back from an object, it can calculate the object’s proximity
Description: The sensor consists of two cylinder-shape eyes, that send out ultrasonic wave, as well as receiving it.
Digital or Analog? Digital
Input or Output? Input and Output
T-Scratch port: PS2 port is to be used. T-Sense (Ultrasonic) would not work with all the ports. This is because each T-Sense (Ultrasonic) requires 2 signals pins while normal sensor ports on the T-Scratch only have 1 signal pin. On top of that, T-Sense (Ultrasonic) requires a PS2 Port Splitter as a converter to work.
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