IOBridge IO-204 integration
Latest activity Reply by Christopher Stapels
on 6 Jan 2026 at 14:29
Some years ago I installed a IOBridge IO-204 device from https://iobridge.com/
This was used to remotely control and monitor heating of a building trough the "ioApp" or trough the widgets on their webpage.
Seems like the support for the app and the IObridge webpage (including widgets) is discontinued and the webpage now links to ThingSpeak without any further information.
I cannot find any information about using ThingSpeak to communicate and control an ioBridge IO-204 device?
If it is possible I would really appreciate some help getting starter to do the setup.
Thanks in advance.
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for the easiest set up, I reccomend downloading arduino ide . You could also use platformio in vscode, but thats a bit more complex.
Then you can write to the channel using the address bar of your browser (also in the instructions)
Verify that you can see the data in your fields.
Then try reading and writing from your device. You can use the code on that page, just replace the sensor reading with random number geretation for practice.
long randNumber = random(0, 100); // Generate a random number between 0 and 99 Serial.println(randNumber);
and replace
include <ESP8266WiFi.h>
with
#include <WiFi.h>
for the esp32.
Then verify you see random data in the channel.
The last step is getting the temperature sensor connected but that will depend on the sensor you use, so lets wait on that.
Thank you,
I have an ESP32 which i bought a while back for some Cheerlights, but im yet to venture further into what these can do. I will see if i have a temp sensor like the one you linked to and would appreciate the assistance with some starter code :) Thank you
We could probably figure out a way to retrofit the exisitng devices to thingspeak but I would recommend getting an esp32 and a temperature sensor.
esp32
https://www.sparkfun.com/sparkfun-esp32-qwiic-pro-mini.html
sensor
https://www.sparkfun.com/sparkfun-digital-temperature-sensor-tmp102-qwiic.html
cable
https://www.sparkfun.com/qwiic-cable-50mm.html
If you buy thos things (and a usb cable), you can use ThingSpeak to get your teperature data going in about 30 minutes or less. Let me know when they arrive and we can help you with the code.
I also have an IOBRIDGE io-204 unit with lots of the modules. It was sold with the guarantee that the server informtion would be made available should it be 'discontinued' allowing for others to continue with the server and their units.
Unfortunatly it didnt happen and there was no response from Hans when the units were ended. I even replied to get more information but the same response was sent. Its a shame and im a bit peeved by that, but its now just a brick. after spending hundreds on the module and their attachments it did hit me. Now im reluctant to throw it away but realising that there are other ways to do sensing and remote control. the thing with the iobridge was it mader it simple.
I just took it back out whilst having a clear out of a room, and hence the search online to see if it was able to work, but alas, still nothing. so it will go to the ewaste tip in the sky. (will prob just pop it back into my cupboard and search again in a years time~)
Thanks Hans :(
The software (server?) that IOBridge worked through to then communicate with Thingspeak was shut down and discontinued a few months ago. An email was sent out to registerd users, even though when they were sold they were sold with the guarantee for continuous functionality.
I have also got an IOBrodge, but they are now defunct.
The only communication i received about the end of the IOBRIDGE service was this...
Sun 03/09/2023 01:39
Hi,
As previously informed, ioBridge services were retired on September 1, 2023.
Temporary access has been granted for some users via this dashboard: https://www.iobridge.com/interface/temp/dashboard
Use the temporary dashboard if you need access to your data.
ioBridge has been running public IoT services since 2008. I wanted to thank you for your support over the years.
Cheers,
Hans
If anyone else has been able to continue with thingspeak intergration please let me know!
I would be pretty confident that you can couple the old modules to an Arduino, but It might be easier to start from new sensors to keep the wiring more simple. I would suggest starting my just sending data to a ThingSpeak channel using the address bar in thour browser (see the API keys tab in your channle for the right syntax. Then use the thinSpeak library for arduino to program your device witht a simple example. Read the getting started tutorial in the documentation https://www.mathworks.com/help/thingspeak/getting-started-with-thingspeak.html and youll be back up on the web in no time. Feel free to post more comments or questions on your journey here.
The IO-204 is a module that has simple IOs. DI/DO/AO/AI that could be remotely controlled. https://en.wikipedia.org/wiki/IoBridge
I used it to monitor temperature (IObridge sensor connected to the module) and to set remotly digital outputs (pulse) to start heating. The DO was connected to a DI on a small PLC.
I thought since their webpage https://iobridge.com/ now link to ThinkSpeak there was a way to integrate the exisiting ioBridge hardware.
I'm sure I can use a Ardunio, just wanted to check if there was a option to use the hardware I had before buying new HW. (Also since I have two modules and 4 temperature sensors in addtition)
What did the IO-204 do? Its pretty likely you can fairly easily replace it with a low cost Arduino or ESP32.
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