Sample Projects

Hardware:
ESP32

Communication:
HTTP

Description:
The hardware app displays a customisable question and records user responses collected over time. The associated web app reports on the responses and allows the question to be changed.

These systems have become common in public places such as restrooms where users are asked to rate the cleanliness of the facility. They have a wide range of applications whenever a simple response is required from users.

Hardware:
ESP32

Communication:
HTTP

Description:
A basic worked example showing how to use Flowcode to create an embedded project that is controlled via a web app using HTTP.

This set of 6 projects provides a detailed look at simple communications between an ESP32 device and a web browser using Flowcode to construct both the embedded app and the web app.

Hardware:
ESP32

Communication:
MQTT

Description:
An environmental control and monitoring application using MQTT.

An embedded ESP32 app reads the local temperature and humidity using an SHT31 sensor and publishes this data to an MQTT server. This data is received and displayed by a PC Developer app and a Web Developer app. The project also allows communication from these apps to the embedded project to allow the user to modify the environment settings.

Hardware:
Arduino

Connection:
Serial via USB

Description:
A PC app and embedded firmware to display carpark occupancy data from an Arduino.

The embedded Arduino app uses 4 inputs and 4 outputs to periodically read a grid of 16 digital values. This information is sent to the PC app, which presents this data as a 4x4 matrix and as a graphic of a carpark.

The apps can easily be extended to read and display more digital values, and the techniques used can be applied to many alternative scenarios where a collection of data values need to be gathered and displayed.

Hardware:
Arduino

Communication:
Serial via USB

Description:
A worked example showing how to create an embedded project that communicates with a PC via the serial port.

This simple example shows two projects - an embedded app and a PC-based app - that communicate with each other using the serial port, exchanging text messages between the embedded device and the PC.

Hardware:
Arduino using Slave Device API

Connection:
Serial via USB

Description:
A general purpose power monitor for an Arduino Uno which uses a SparkFun current sensor breakout board ACS723 (SEN-13679)

The Arduino is loaded with our API Slave firmware, allowing a PC Developer app to control it and read data from the current sensor. This data is plotted onto a series of charts in the PC app and is optionally saved to a CSV file.