Skip to content

Commit

Permalink
Merge pull request Seeed-Studio#2016 from Carla-Guo/docusaurus-version
Browse files Browse the repository at this point in the history 
Add DHT20 and LCD1602 demo for Pico
  • Loading branch information
@limengdu
limengdu authored Dec 20, 2024
2 parents bbb1495 + 87069d6 commit 43e8983
Showing 1 changed file with 163 additions and 6 deletions.
169 changes: 163 additions & 6 deletions docs/Sensor/Pi_Pico/Grove-Starter-Kit-for-Raspberry-Pi-Pico.md
View file
Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,10 @@ last_update:
author: jianjing Huang
---


import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';

![enter image description here](https://files.seeedstudio.com/wiki/Grove_Shield_for_Pi_Pico_V1.0/Pico_hardware.png)

The Raspberry Pi Pico is a new popular low-cost, high-performance microcontroller board, so how to integrate Grove sensor to it? The grove shield perfectly solved this problem.
Expand Down Expand Up @@ -143,14 +147,51 @@ Now, rotate the **Grove Rotary Angle Sensor**, and you will hear different sound

### Project 2: Detecting Temperature and Humidity

<Tabs>
<TabItem value="Old" label="Option 1: DHT11 and SSD1315" default>

#### Materials Required

**Step 1.** Prepare the following items:

| Pi Pico | Grove Shield for Pi Pico | Grove OLED Display 0.96" (SSD1315) | Grove Temperature & Humidity Sensor (DHT11) |
|---------|--------------------------|------------------------------------|--------------------------------------------|
| ![Pi Pico](https://files.seeedstudio.com/wiki/Grove_Shield_for_Pi_Pico_V1.0/Picoboard1.jpg) | ![Grove Shield for Pi Pico](https://files.seeedstudio.com/wiki/Grove_Shield_for_Pi_Pico_V1.0/picobaseshield.png) | ![Grove OLED Display](https://files.seeedstudio.com/wiki/Grove-OLED-Display-0.96-SSD1315-/img/Grove-OLED-Displey-0.96-SSD1315-thumbnail.jpg) | ![Grove Temperature Humidity Sensor](https://files.seeedstudio.com/wiki/Grove-TemperatureAndHumidity_Sensor/img/list.jpg) |
| [Get ONE Now](https://www.seeedstudio.com/Raspberry-Pi-Pico-p-4832.html) | [Get ONE Now](https://www.seeedstudio.com/Grove-Shield-for-Pi-Pico-v1-0-p-4846.html) | [Get ONE Now](https://www.seeedstudio.com/Grove-OLED-Display-0-96-SSD1315-p-4294.html) | [Get ONE Now](https://www.seeedstudio.com/Grove-Temperature-Humidity-Sensor-DHT11.html) |
<div class="table-center">
<table align="center" style={{width: 950, height: "auto", overflowX: 'scroll', textAlign: 'left',}}>
<tr>
<th>Pi Pico</th>
<th>Grove Shield for Pi Pico</th>
<th>Grove OLED Display 0.96" (SSD1315)</th>
<th>Grove Temperature & Humidity Sensor (DHT11)</th>
</tr>
<tr>
<td><div style={{textAlign:'center'}}><img src="https://files.seeedstudio.com/wiki/Grove_Shield_for_Pi_Pico_V1.0/Picoboard1.jpg" style={{width:250, height:'auto'}}/></div></td>
<td><div style={{textAlign:'center'}}><img src="https://files.seeedstudio.com/wiki/Grove_Shield_for_Pi_Pico_V1.0/picobaseshield.png" style={{width:250, height:'auto'}}/></div></td>
<td><div style={{textAlign:'center'}}><img src="https://files.seeedstudio.com/wiki/Grove-OLED-Display-0.96-SSD1315-/img/Grove-OLED-Displey-0.96-SSD1315-thumbnail.jpg" style={{width:250, height:'auto'}}/></div></td>
<td><div style={{textAlign:'center'}}><img src="https://files.seeedstudio.com/wiki/Grove-TemperatureAndHumidity_Sensor/img/list.jpg" style={{width:250, height:'auto'}}/></div></td>
</tr>
<tr>
<td><div class="get_one_now_container" style={{textAlign: 'center'}}>
<a class="get_one_now_item" href="https://www.seeedstudio.com/Raspberry-Pi-Pico-p-4832.html">
<strong><span><font color={'FFFFFF'} size={"4"}> Get One Now 🖱️</font></span></strong>
</a>
</div></td>
<td><div class="get_one_now_container" style={{textAlign: 'center'}}>
<a class="get_one_now_item" href="https://www.seeedstudio.com/Grove-Shield-for-Pi-Pico-v1-0-p-4846.html">
<strong><span><font color={'FFFFFF'} size={"4"}> Get One Now 🖱️</font></span></strong>
</a>
</div></td>
<td><div class="get_one_now_container" style={{textAlign: 'center'}}>
<a class="get_one_now_item" href="https://www.seeedstudio.com/Grove-OLED-Display-0-96-SSD1315-p-4294.html">
<strong><span><font color={'FFFFFF'} size={"4"}> Get One Now 🖱️</font></span></strong>
</a>
</div></td>
<td><div class="get_one_now_container" style={{textAlign: 'center'}}>
<a class="get_one_now_item" href="https://www.seeedstudio.com/Grove-Temperature-Humidity-Sensor-DHT11.html">
<strong><span><font color={'FFFFFF'} size={"4"}> Get One Now 🖱️</font></span></strong>
</a>
</div></td>
</tr>
</table>
</div>

:::note
In this kit, we have upgraded the Grove Temperature Humidity Sensor (DHT11) to [Grove Temperature Humidity Sensor (DHT20)](https://www.seeedstudio.com/Grove-Temperature-Humidity-Sensor-V2-0-DHT20-p-4967.html). If you'd like to get started with the DHT20 sensor, click [here](https://wiki.seeedstudio.com/Grove-Temperature-Humidity-Sensor-DH20/).
Expand Down Expand Up @@ -314,6 +355,122 @@ You should now see the temperature and humidity displayed on the OLED screen, si

![OLED Display Output](https://files.seeedstudio.com/wiki/Grove_Shield_for_Pi_Pico_V1.0/oled1.jpg)


</TabItem>
<TabItem value="New" label="Option 2: DHT20 and LCD1602" default>

#### Materials Required

**Step 1.** Prepare the following items:

<div class="table-center">
<table align="center" style={{width: 950, height: "auto", overflowX: 'scroll', textAlign: 'left',}}>
<tr>
<th>Pi Pico</th>
<th>Grove Shield for Pi Pico</th>
<th>Grove 16x2 LCD (White on Blue)</th>
<th>Grove Temperature & Humidity Sensor V2.0 (DHT20)</th>
</tr>
<tr>
<td><div style={{textAlign:'center'}}><img src="https://files.seeedstudio.com/wiki/Grove_Shield_for_Pi_Pico_V1.0/Picoboard1.jpg" style={{width:250, height:'auto'}}/></div></td>
<td><div style={{textAlign:'center'}}><img src="https://files.seeedstudio.com/wiki/Grove_Shield_for_Pi_Pico_V1.0/picobaseshield.png" style={{width:250, height:'auto'}}/></div></td>
<td><div style={{textAlign:'center'}}><img src="https://media-cdn.seeedstudio.com/media/catalog/product/cache/bb49d3ec4ee05b6f018e93f896b8a25d/h/t/httpsstatics3.seeedstudio.comseeedfile2018-10bazaar969249_front.jpg" style={{width:250, height:'auto'}}/></div></td>
<td><div style={{textAlign:'center'}}><img src="https://media-cdn.seeedstudio.com/media/catalog/product/cache/bb49d3ec4ee05b6f018e93f896b8a25d/1/0/101020932_preview-07-min_1.jpg" style={{width:250, height:'auto'}}/></div></td>
</tr>
<tr>
<td><div class="get_one_now_container" style={{textAlign: 'center'}}>
<a class="get_one_now_item" href="https://www.seeedstudio.com/Raspberry-Pi-Pico-p-4832.html">
<strong><span><font color={'FFFFFF'} size={"4"}> Get One Now 🖱️</font></span></strong>
</a>
</div></td>
<td><div class="get_one_now_container" style={{textAlign: 'center'}}>
<a class="get_one_now_item" href="https://www.seeedstudio.com/Grove-Shield-for-Pi-Pico-v1-0-p-4846.html">
<strong><span><font color={'FFFFFF'} size={"4"}> Get One Now 🖱️</font></span></strong>
</a>
</div></td>
<td><div class="get_one_now_container" style={{textAlign: 'center'}}>
<a class="get_one_now_item" href="https://www.seeedstudio.com/Grove-16x2-LCD-White-on-Blue.html">
<strong><span><font color={'FFFFFF'} size={"4"}> Get One Now 🖱️</font></span></strong>
</a>
</div></td>
<td><div class="get_one_now_container" style={{textAlign: 'center'}}>
<a class="get_one_now_item" href="https://www.seeedstudio.com/Grove-Temperature-Humidity-Sensor-V2-0-DHT20-p-4967.html">
<strong><span><font color={'FFFFFF'} size={"4"}> Get One Now 🖱️</font></span></strong>
</a>
</div></td>
</tr>
</table>
</div>


**Step 2.** Connect the Grove 16x2 LCD (White on Blue) to port I2C1 of the Grove Shield.

**Step 3.** Connect the Grove Temperature & Humidity Sensor V2.0 (DHT20) to port D18 of the Grove Shield.

**Step 4.** Plug the Grove Shield into the Pi Pico.

**Step 5.** Connect the Pi Pico to your PC using a USB cable.

#### Software Setup

Please refer to the software section of Demo 1.

1. Copy the following code into Thonny IDE:

```python
from lcd1602 import LCD1602
from dht20 import DHT20
from machine import I2C,Pin
from time import sleep

i2c1 = I2C(1,scl=Pin(7), sda=Pin(6), freq=400000)
d = LCD1602(i2c1, 2, 16)
i2c0 = I2C(0, scl=Pin(9), sda=Pin(8),freq=400000)
dht20 = DHT20(0x38, i2c0)

while True:

measurements = dht20.measurements
temp_rounded = round(measurements['t'], 1)
humidity_rounded = round(measurements['rh'], 1)
print(f"Temperature: {temp_rounded} °C, humidity: {humidity_rounded} %RH")
d.home()
d.print('temp=')
d.print(str(temp_rounded))
d.print('C')
sleep(1)
d.setCursor(0, 1)
d.print('humidity=')
d.print(str(humidity_rounded))
d.print('%RH')
sleep(1)
```

2. Download the following required Python files to your local machine:
- [DHT20.py](https://files.seeedstudio.com/wiki/Grove-Temperature-Humidity-Sensor/dht/DHT20.py)
- [lcd1602.py](https://files.seeedstudio.com/wiki/Grove-16x2_LCD--White_on_Blue/lcd1602.py)

3. Open **DHT20.py** in Thonny IDE, click `File -> Save As -> MicroPython device`, and save the file with the name **DHT20.py** on your device.

<div style={{textAlign:'center'}}><img src="https://files.seeedstudio.com/wiki/Grove-Temperature-Humidity-Sensor/saveas.png" style={{width:750, height:'auto'}}/></div>

<br></br>

<div style={{textAlign:'center'}}><img src="https://files.seeedstudio.com/wiki/Grove-Temperature-Humidity-Sensor/open.png" style={{width:750, height:'auto'}}/></div>

4. Repeat the same process to save **lcd1602.py** to your MicroPython device.

#### Running the Project

Once both files are saved to your MicroPython device, run the demo code by pressing the green **Run** button in Thonny.

You should now see the temperature and humidity displayed on the OLED screen, similar to the image below:

<div style={{textAlign:'center'}}><img src="https://files.seeedstudio.com/wiki/Grove-Temperature-Humidity-Sensor/oled_output.jpg" style={{width:750, height:'auto'}}/></div>

</TabItem>
</Tabs>

### Project 3: Controling Led and Relay

#### Materials Required
Expand Down Expand Up @@ -416,7 +573,7 @@ led.rainbow_cycle(0)

```

Then please download the [ws2812.py](http://47.106.166.129/Embeded/pico-micropython-grove/blob/master/Digital/ws2812.py) to your local. Use Thonny open ws2812.py, click file->save as->MicroPython device.
Then please download the [ws2812.py](https://files.seeedstudio.com/wiki/Grove-Temperature-Humidity-Sensor/ws2812.py) to your local. Use Thonny open ws2812.py, click file->save as->MicroPython device.

Input **ws2812.py** in File name column, click "ok", then the file is saved at File->Open->MicroPython device.

Expand Down Expand Up @@ -480,7 +637,7 @@ while True:

```

Then please download the [LCD1602.py](http://47.106.166.129/Embeded/pico-micropython-grove/blob/master/I2C/lcd1602.py) to your local. Use Thonny open LCD1602.py, click file->save as->MicroPython device.
Then please download the [LCD1602.py](https://files.seeedstudio.com/wiki/Grove-16x2_LCD--White_on_Blue/lcd1602.py) to your local. Use Thonny open LCD1602.py, click file->save as->MicroPython device.

Input **LCD1602.py** in File name column, click "ok", then the file is saved at File->Open->MicroPython device.

Expand Down

0 comments on commit 43e8983

Please sign in to comment.