Hi, you might be using a 5v relay, either use a relay with 3.3v trigger or level shift the 3.3v to 5v using a transistor or a level shifter module. Good luck with your project!

Some adapters come with a button inbuilt, my guess is they might be using one of those.

Hello @venkateshpatel4500 this tutorial was meant to work with Ubuntu 22.04, for other versions you will have to use the commands on ROS website under that particular version of unbuntu, thanks!

Ah while I can’t promise the cnc machine part, communication between arduino and PC can be done a number of ways, serial com, ROS etc, thanks for the idea!

@dels1601 Can you tell me in more detail?

Each LTS version of ubuntu comes with its corresponding ROS version, the newer versions (22.04 and above) have support for ROS 2 , but I recommend learning ROS 1 first because it has more support resources and a larger community online. I suggest you start with ROS noetic and ubuntu 20.04. Good luck!

@@AIbeginsDotNet mine is ubuntu 23.10 , it looks like it didn't support. If yes can u make a small video for installing Ros for this version plz

​@@amalkrishna6881 I don't think ros2 works on ubuntu 23.10 so use ubuntu 22.04.3 LTS instead which supports ros2 humble distribution

Yes you can, just be careful with the pinout.

The board manager might not have been configured properly, add the board url and you’ll see it appear in the examples

Hi @garymccrohan7247 , I have not tried using it with the tab, does it work like a hub ?

You can refer to my earlier video which show you how to program an esp01. Here is the link: kzbin.info/www/bejne/mYXJm6SEe6aekJo

Here are the things you can try 1. Check you echo version, I have tested it on echo 3rd gen. I am not sure if it works for newer versions. 2. Check that your esp and echo are on same wifi network. I know it sounds trivial but I have made this exact mistake before. 3. You can try turning on the debug flag in the code and check the outputs on serial monitor. Sometimes restarting the echo and esp also helps. Good luck with your project!

I have updated the link, can you try again?

@@AIbeginsDotNet Works, thank you

8.8.8.8 is the google’s DNS server which works in almost all countries except maybe China, 1.1.1.1 which is couldfare’s DNS also works in most parts of the world. Either of them should work for you. Good luck with your project!

@@AIbeginsDotNet thank you so muxh for your time <3

Hm is it getting stuck when you operate the relay, or just in general? LED bulbs don’t generate a lot of switching transients so that might not be the issue. also just in case try it with a different relay. It may be that the relay is drawing too much current from ESP01 if you are not using a relay module without optoisolator or if the relay is faulty.

@@AIbeginsDotNet I'm using blynk edgent for the coding part. So when I attach the esp01 it powers on, and the relays clicks and then goes to nc position. But the system would not come on-line or emit wifi for connecting and initial setup. Sometimes when touching the esp it would restart but i can't set it up because of the bootloops. In a short note i know for sure that it's bootlooping. Also i used a 4 channel relay with the same esp01 ( no load tested) it was just working fine. I guess I'll have to check the 4 channel one.

There is one issue I could think of, when you turn on one device connected to NC it might for a very brief instant cause a connection to the device connected to NO port if there is an MOV connected to both sides. You will understand once you draw the resulting circuit. But depending on your use case you probably can do it, but do a test run first using an individual relay.

Ah yes, sorry about that, I’ll have them sorted in the future videos

Hi Jeff, the instructions in this video are for a setup without gui, so if you connect an external display to your pi4, it will only show the command line. To mirror the pi4 display on your laptop you will need to install the ubuntu desktop on your pi4 and use VNC viewer. PS: If you wait a while I will be uploading a video on how to remotely code the pi4 from your laptop using VS Code!

ESP01 is a microcontroller with onboard wifi capabilities but it is also commonly used as a wifi module for other microcontrollers .

@@AIbeginsDotNet thank you so much dear sir for sharing some light on this head of mines:P I wonder what can be used for.

It’s the 20.04 LTS version

I'm sure programming them is nearly identical. Mr. arrogant

Hello! I know it sounds weird but can you try waiting for two minutes or so after you turn on the pi and then try ssh ? It seems to be a known issue. Do let me know if that works for you. Good luck with your project!