m5-docs/docs/en/unit/op90.md

# OP90

<el-tag effect="plain">SKU:U057</el-tag>

<div class="product_pic"><img src="assets/img/product_pics/unit/op90/unit_op90_01.webp"><img src="assets/img/product_pics/unit/op90/unit_op90_02.webp"></div>

## Description

***OP.90*** and ***OP.180*** are two limit switches with different orientation placement. Built based on the ITR9606, which consist of an infrared emitting diode and a silicon phototransistor.
<br>
They are used for controlling machinery as part of a control system, as a safety interlock, or to count objects passing a point.A limit switch is an electromechanical device that consists of an actuator mechanically linked to a set of contacts. When an object comes into contact with the actuator, the device operates the contacts to make or break an electrical connection
<br>
The actuator of this Unit is consist of a pair of IR part, emitter side and receiver side(silicon phototransistor). The IR emitter will keep sending IR wave while the receiver will keep detecting the IR wave.  The IR is directly emitted from one side to another side, so if there's no object in between, the receiver side would get the IR signal. This is how it detecting a break an electrical connection.
<br><br><br>

### Product Features

- Vertical Layout
- IR limit switch
- Fast response time
- High sensitivity

## Include

- 1x OP.90 unit
- 1x GROVE Cable

## Applications

- Door Switch
- Machinery Control
- Mouse Copier
- Switch Scanner
- Non-contact Switching

## Specification

<table>
   <tr style="font-weight:bold">
      <td>Resources</td>
      <td>Parameter</td>
   </tr>
   <tr>
      <td>Net weight</td>
      <td>4g</td>
   </tr>
   <tr>
      <td>Gross weight</td>
      <td>18g</td>
   </tr>
   <tr>
      <td>Product Size</td>
      <td>32*24*14mm</td>
   </tr>
   <tr>
      <td>Package Size</td>
      <td>60*57*17mm</td>
   </tr>
 </table>

## Schematic
<img src="assets/img/product_pics/unit/op90/unit_op90_04.webp">


## EasyLoader

>EasyLoader is a concise and fast program writer, which has a built-in case program related to the product. It can be burned to the main control by simple steps to perform a series of function verification. Please install the corresponding driver according to the device type. M5Core host [Please click here to view the CP210X driver installation tutorial](en/arduino/arduino_development), M5StickC/V/T/ATOM series can be used without driver)

<div class="easyloader-box">
    <div style="background-color:white;">
        <div><img src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/image/easyloader_intro.webp"></div>
        <div class="easyloader-btn">
            <a href="https://m5stack.oss-cn-shenzhen.aliyuncs.com/EasyLoader/Windows/UNIT/For%20M5Core/EasyLoader_OP90.180_UNIT_With_M5Core.exe">Windows</a>
            <a href="https://m5stack.oss-cn-shenzhen.aliyuncs.com/EasyLoader/MacOS/UNIT/EasyLoader_OP90.180_UNIT_With_M5Core.dmg">MacOS</a>
            <!-- <a>Linux</a>
            <a>MacOS</a> -->
        </div>
    </div>
    <div>
        <video id="example_video" controls>
            <source src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/video/Product_example_video/Unit/OP90_UNIT.MP4" type="video/mp4">
        </video>
        <div class="easyloader-mask">
        <a>
            <svg id="play-btn" t="1583228776634" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="4152" width="75" height="75"><path d="M512 0C229.216 0 0 229.216 0 512s229.216 512 512 512 512-229.216 512-512S794.784 0 512 0z m0 928C282.24 928 96 741.76 96 512S282.24 96 512 96s416 186.24 416 416-186.24 416-416 416zM384 288l384 224-384 224z" p-id="4153" fill="#007aff"></path></svg></a>
            <p>Description:</p>
            <p>Output 1 when the sensor is blocked.</p>
        </div>
    </div>
</div>

## Example

### 1. Arduino

- [Click here to download the Arduino example](https://github.com/m5stack/M5Stack/tree/master/examples/Unit/OP90.180_ITR9606)

### 2. UIFlow

- [Click here to download the UIFlow example](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/OP90.180/UIFlow)

<img src="assets/img/product_pics/unit/op90/op90.webp" width="80%" height="80%">

<el-divider content-position="right">Last updated: 2020-12-14</el-divider>

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