---
title: "Web interface + API for RS232 controlled device"
url: "https://maker.wiznet.io/chabala/contest/web-interface-api-for-rs232-controlled-device/"
markdown_url: "https://maker.wiznet.io/chabala/contest/web-interface-api-for-rs232-controlled-device/md"
type: "Contests"
author: "chabala"
author_url: "https://maker.wiznet.io/chabala/"
original_author: "chabala"
published: "2022-01-25"
language: "en"
likes: 1
views: 1845
comments: 2
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# Web interface + API for RS232 controlled device

> Web interface + API for RS232 controlled device

Original author: chabala

## Documents and links

- [pi-pico-serial-web-api repository](https://github.com/chabala/pi-pico-serial-web-api) (code): project code, photos, and detailed description

## Article

A Raspberry Pi Pico with hardwired Ethernet seems like the perfect platform to add web APIs to serial controlled devices. I have a TV which has an RS-232 control interface for power on, changing inputs, etc. A low-power Ethernet-serial bridge device would be ideal to make that interface more usable.

Hackaday?[made a post](https://hackaday.com/2022/01/23/hackaday-links-january-23-2022/)?that mentioned WIZnet was?[running a contest](https://maker.wiznet.io/wiznet-ethernet-hat-contest/)?to demonstrate products that add hardwired Ethernet to Raspberry Pi Pico boards. The WIZnet?`W5100S-EVB-Pico`?is a Raspberry Pi Pico clone with hardwired Ethernet built right into the board. After learning that this product existed, I realized this was an excellent fit for making a web API for the serial interface on my TV.?[This repository](https://github.com/chabala/pi-pico-serial-web-api)?represents?[my entry into the WIZnet Ethernet HAT Contest](https://maker.wiznet.io/2022/01/25/web-interface-api-for-rs232-controlled-device/).

---

Source: https://maker.wiznet.io/chabala/contest/web-interface-api-for-rs232-controlled-device/