Grove - Optical Rotary
Encoder(TCUT1600X01)
The Grove - Optical Rotary Encoder(TCUT1600X01) is a transmissive sensor that
includes an infrared emitter and two phototransistor detectors. Usually, the infrared
emitter emits infrared rays, the phototransistor detectors receives the infrared rays, then
the phototransistor is turned on, both of the output is High, the on-board LED indicators
light up. When there is an obstacle blocking, the phototransistor can not receive the
infrared rays, so the phototransistor will be turned off and both of the output will be Low,
the on-board LED indicators fade away.
You can use this sensor as a rotary encoder to detect the speed or rotation, and thanks
to the two phototransistor detectors, you even can detect the rotation direction.
Features
Double phototransistor detectors, can determine the direction of rotation
On-board LED indicators
Grove Interface
Specification
Item
Value
Operating voltage
3.3V / 5V
Operating temperature
‐40°C to +105°C
Storage temperature Range
‐40°C to +125°C
Emitter wavelength
950 nm
Gap
3 mm
Interface
Digital
Applications
Automotive optical sensors
Accurate position sensor for encoder
Sensor for motion, speed, and direction
Sensor for “turn and push” encoding
Hardware Overview
Pin Map
Schemaitc
Power
The typical voltage of TCUT1600X01 is 5V, so we use the MP3120 current mode stepup converter to provide a stable 5V. The input of MP3120 ranges from 0.8V to 5V, so
you can use this module with your Arduino both in 3.3V and 5V.
When the phototransistor detectors receive the infrared signal, the output should be
High, and when the obstacle blocks the infrared, the OUT1 and OUIT2 should be Low.
However due to the leakage current, it won't be 0V. The leakage voltage varies with the
input voltage.
Mechanical Drawing
Directional Detection
Tip
Thanks to the two phototransistor detectors, we can detect the moving direction. If the
obstacle moves from the left to right, The output states change should be 11 → 01 →
00 → 10; in the same way, if the obstacle moves from the right to left, it should be 11 →
10 → 00 →01.
Platforms Supported
Arduino
Raspberry Pi
BeagleBone
Wio
LinkIt ONE
Caution
The platforms mentioned above as supported is/are an indication of the module's
hardware or theoritical compatibility. We only provide software library or code examples
for Arduino platform in most cases. It is not possible to provide software library / demo
code for all possible MCU platforms. Hence, users have to write their own software
library.
Getting Started
Play With Arduino
Hardware
Materials required
Seeeduino V4.2
Base Shield
Grove ‐ Optical Rotary Encoder
Note
1 Please plug the USB cable gently, otherwise you may damage the port. Please use
the USB cable with 4 wires inside, the 2 wires cable can't transfer data. If you are not
sure about the wire you have, you can click here to buy
2 Each Grove module comes with a Grove cable when you buy. In case you lose the
Grove cable, you can click here to buy.
Step 1. Connect the Grove - Optical Rotary Encoder to the D5 port of the Base
Shield.
Step 2. Plug Grove - Base Shield into Seeeduino.
Step 3. Connect Seeeduino to PC via a USB cable.
Note
If we don't have Grove Base Shield, We also can directly connect this module to
Seeeduino as below.
Seeeduino
Grove ‐ Optical Rotary Encoder
5V
Red
GND
Black
D6
White
D5
Yellow
Software
Note
If this is the first time you work with Arduino, we strongly recommend you to see Getting
Started with Arduinobefore the start.
Step 1. Install the Encoder Library in the Arduino IDE. You can find this library by the
following path: Sketch→Include Library→Manage Libraries
Then search for the encoder in the pop-up window. Find the Encoder by Paul
Stoffregen, choose the Version1.4.1, then click Install.
When the library is installed you will see INSTALLED, click Close then.
Thanks for Paul for his splendid library.
Step 2. Restart the Arduino IDE. Open the example, you can open it in the following
three ways：
a. Open it directly in the Arduino IDE via the path: File → Examples → Encoder
→ Basic.
b. Open it in your computer by click the Basic.pde which you can find in
the xxxx\Arduino\libraries\Encoder\examples\Basic, XXXX is the location
you installed the Arduino
IDE.
c. Or, you can just click the icon
in upper right corner of the code block to copy
the following code into a new sketch in the Arduino IDE.
1 /* Encoder Library - Basic Example
2 * http://www.pjrc.com/teensy/td_libs_Encoder.html
3*
4 * This example code is in the public domain.
5 */
6
7 #include
8
9 // Change these two numbers to the pins connected to your
10 encoder.
11 // Best Performance: both pins have interrupt capability
12 // Good Performance: only the first pin has interrupt capability
13 // Low Performance: neither pin has interrupt capability
14 Encoder myEnc(5, 6);
15 // avoid using pins with LEDs attached
16
17 void setup() {
18 Serial.begin(9600);
19 Serial.println("Basic Encoder Test:");
20 }
21
22 long oldPosition = -999;
23
24 void loop() {
25 long newPosition = myEnc.read();
26 if (newPosition != oldPosition) {
27 oldPosition = newPosition;
28 Serial.println(newPosition);
29 }
}
Tip
You can change two numbers to the pins connected to your encoder, for the Best
Performance: both pins have interrupt capability, so you can change the code line 13
into Encoder myEnc(2, 3);, meanwhile, you should connect this sensor to the D2 of the
baseshield.
Step 4. Upload the demo. If you do not know how to upload the code, please
check How to upload code.
Step 5. Open the Serial Monitor of Arduino IDE by click Tool-> Serial Monitor. Or
tap the Ctrl + Shift + M key at the same time. Set the baud rate to 9600.
Success
If every thing goes well, you will get the result. When you move the obstacle from left to
right, the count value will increase by 1; when you move the obstacle from right to left,
the count value will be decremented by 1.
1 Basic Encoder Test:
20
31
42
53
64
73
82
91
10 0
11 -1
12 -2
13 -3
14 -4
http://wiki.seeedstudio.com/Grove‐Optical_Rotary_Encoder‐TCUT1600X01/#play‐with‐arduino 11‐6‐18
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