---
title: "RP Pico used in smart farms"
url: "https://maker.wiznet.io/Alan/resellers/rp-pico-used-in-smart-farms/"
markdown_url: "https://maker.wiznet.io/Alan/resellers/rp-pico-used-in-smart-farms/md"
type: "VAR: Value-Added Reseller Products"
author: "김실장"
author_url: "https://cafe.naver.com/carroty/383211?art=ZXh0ZXJuYWwtc2VydmljZS1uYXZlci1zZWFyY2gtY2FmZS1wcg.eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJjYWZlVHlwZSI6IkNBRkVfVVJMIiwiY2FmZVVybCI6ImNhcnJvdHkiLCJhcnRpY2xlSWQiOjM4MzIxMSwiaXNzdWVkQXQiOjE2ODgzNTEwMDEyMzF9.9aZqonmBhixGL8V4YcUnT50UOOMUgGzJNnOLzlLo0kA"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "김실장"
original_url: "https://cafe.naver.com/carroty/383211?art=ZXh0ZXJuYWwtc2VydmljZS1uYXZlci1zZWFyY2gtY2FmZS1wcg.eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJjYWZlVHlwZSI6IkNBRkVfVVJMIiwiY2FmZVVybCI6ImNhcnJvdHkiLCJhcnRpY2xlSWQiOjM4MzIxMSwiaXNzdWVkQXQiOjE2ODgzNTEwMDEyMzF9.9aZqonmBhixGL8V4YcUnT50UOOMUgGzJNnOLzlLo0kA"
published: "2023-07-04"
language: "en"
likes: 1
views: 397
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# RP Pico used in smart farms

> Origin : WIZNET5500 + RP2040 (PICO) ----> RA-PICO

Original author: 김실장 (source: https://cafe.naver.com/carroty/383211?art=ZXh0ZXJuYWwtc2VydmljZS1uYXZlci1zZWFyY2gtY2FmZS1wcg.eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJjYWZlVHlwZSI6IkNBRkVfVVJMIiwiY2FmZVVybCI6ImNhcnJvdHkiLCJhcnRpY2xlSWQiOjM4MzIxMSwiaXNzdWVkQXQiOjE2ODgzNTEwMDEyMzF9.9aZqonmBhixGL8V4YcUnT50UOOMUgGzJNnOLzlLo0kA)

## Article

The Korean developer "Kimsiljang" created a module that uses the Pico board and the W5500 to build a smart farm.

Below is the contents of Kim's posting.

> ***Raspberry pie has so many good things. Web servers, database servers, camera servers, and many other things can be implemented, as in many GPIO and C language libraries and high-end computers. In addition, many equipment such as control were made and distributed using GPIO.***
>
> ***But... **Now, Raspberry Pi has not been supplied since Corona, so Raspberry Pi, which costs 50,000 won, went up to 300,000 won and is now about 100,000 won.***

![](https://maker.wiznet.io/upload/ckeditor5/483432245%5F1688480530%2Epng)

In fact, as of 2023-07-04, the price of Raspberry Pi B+ in Korea is about 45 USD. However, it is sold out on all sites, or one can be purchased per person

Below is the contents of Kim's posting.

> ***That's why I made RA-PICO. ***
>
> ***Designed to be the same size as the Raspberry Pi B+, I/O and TTL serials are placed so that they can be used like the Raspberry Pi B+ with Ethernet.***

All of RA-PICO's network programs and control programs were coded in C language. And we used the sensor port so that it could be used as RTD temperature, humidity, and CO2 device.
The high precision temperature and humidity sensor were implemented by controlling the SHT35 using I2C..

Also, we implemented two channels of serial TOETHERNET through TCP server with built-in RS485.

> ***Implement TCP CLIENT to automatically upload data to the server.***
>
> ***Implementing a UDP server to implement control and equipment discovery and setup capabilities with UDP/IP protocols.***
>
> ***(Implementation of loading information into UDP broadcasts and IP setting with MAC addresses when the IP of the set device is unknown)***
>
> ***Implementation of sensor 3 channels (4-20 mA) with built-in AI implementation of sensor ports. RTD temperature sensor implementation.***
>
> ***(The built-in AI can sense up to 4.2V, so it's hard... solved)***
>
> **Enable automatic access using domain by implementing DNS lookup. (If network is not configured at first attempt, I have trouble reconnecting... Now available)**
>
> **MQTT support available.**
>
> **Additional implementation of EEPROM. (EEPROM suffers from design errors, struggles...^^)**
>
> **Implementation of an SHT35 high-precision thermal and humidity sensor using I2C... (Tired of I2C sensor ion SHT35 down phenomenon)**
>
> **Simple Web (WEB) server implementation (for parameter setting)**
>
> **Ethernet and other environmental parameters were stored in the program FLASH and made modifications possible.**
>
> **(We had a hard time setting up and saving flash parameter IP modification lights^^)**

​![](https://maker.wiznet.io/upload/ckeditor5/483432245%5F1688481723%2Epng)

![](https://maker.wiznet.io/upload/ckeditor5/483432245%5F1688481739%2Epng)

RA-Pico is noise-resistant and can be programmed in C language

This board arranged Pinmap in the same way as Raspberry pi B+. Therefore, it is compatible with Raspberry Pi.

​He is currently preparing for the second version.

We will add MCP23S17 to the board to expand GPIO by 16 channels and add A/O functionality. We will also add a USB HOST function.
And, MCP3208 analog 8 channels will be added.

---

Source: https://maker.wiznet.io/Alan/resellers/rp-pico-used-in-smart-farms/