# Grayscale Sensor Firmware Update

### 1. Download the grayscale sensor firmware

      a. [V1.1 grayscale sensor firmware](https://link.zhihu.com/?target=https%3A//github.com/UBTEDU/Patrol_Sensor/releases/download/3.5/route3.5.zip)

      b. [V1.0 grayscale sensor firmware](https://link.zhihu.com/?target=https%3A//github.com/UBTEDU/Patrol_Sensor/releases/download/3.3/route3.3.zip)

{% hint style="info" %}
Note: V1.0 Grayscale Sensor firmware to be used with V1.0 Grayscale Sensor hardware and V1.1 Grayscale Sensor firmware to be used with V1.1 Grayscale Sensor hardware.
{% endhint %}

### 2. Install [uKit Explore Blockly](https://www.ubtechedu.com/global/Uploads/file/20190221/uKit-Explore_Setup.zip)

 

![](/files/-M5Qn7DVMkgwjPGrsLd_)

### 3. Unzip the downloaded file routex.x.zip, and open routex.x.ino

<div align="left"><img src="/files/-M5QnHuKNOTVG20OE8np" alt=""></div>

### 4. Connect the USB to the USB port on Grayscale sensor, and another end to your PC. (make sure the USB is of data cable instead of charging cable)

### 5. Choose the correct board and COM Port

* **5.1** Board: Tools > Board > Arduino Nano
* **5.2** Processor: If your Arduino IDE version is above 1.8.6, you can choose the default ATmega328P. If the Arduino IDE version is lower than 1.8.6, select ATmega328P (Old Bootloader)
* **5.3** COM Port: Select your COM port (you might have different port)

![](/files/-M5QnotRZyqvlvNxFnHE)

### **6.**&#x43;lick upload and upon successful upload, the grayscale sensor’s firmware had been updated.


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