Matrix user forums

Hi I think your firmware is an older version as the latest is AT = 1.7.4.0 SDK = 3.0.4 Not sure what the differences will be though. As for the connections, my diagram was as you say just to illustrate what needs to be connected, and is essentially the same as your other diagram. However your board ...

Hi Like most things, when you first look or try it can seem daunting but the ESP8266 is very easy to use. You should download the associated AT commands as knowing these (or having them to hand) will be extremely valuable in getting the modules to do as you wish. They are very easy to use so don't b...

Hi I'm confused as to why you think you need an IP address to configure an ESP8266 over UART (especially as you can now interact with it via the AT command set). Have you downloaded the associated AT Command list? It documents and gives examples of all commands, and it is these commands you use to m...

Hi

I have very fond memories of v5 as it's the first I really used to any extent.

In v10 the source code for components is made available too. This is quite a helpful feature. As v10 is free (for hobby use) you could always try it and see if it provides you with any benefit.

Regards

Hi You do need to include CR and LF after each command is typed and Terminal allows you to send this automatically by checking CR=CR+LF. If using some other program then after you type AT you need to press and hold CTRL, then press M then J. Using Terminal is much easier I think. There is no guarant...

Hi Only on my phone at present so I can't really see what settings are, but whatever you used to send "AT" and get the "OK" reply is what you need. It's a great step forward as it means you can communicate with the module :D When sending "AT" it needs a CR / LF (or both, can't remember exactly offha...

Hi Tests 1 and 2 are perfect, your adapter is good. Your esp seems set at a default speed of 115200 so we will use that. In your screenshot (test 3) I see that in Terminal you haven't checked the tick boxes for CR=CR+LF (in the settings just above receive window) nor +CR (just left of send button). ...

Hi You would need to attach your chart for people to assist in the issue. However v5 is very, very old now and unsupported other than by the forum so specific updates are probably not a high priority. Have you considered upgrading to v10? It's free to use and all components are free too. The website...

Hi So as to avoid any confusion regarding connections and settings would you do the following quick tests? With reference to the below .PDF Test Connections.pdf You will see three test scenarios for connecting the ESP8266 and the USB-TTL adapter to your PC. Test-1 No Connection Connect your USB Adap...

Hi I will connect up a module of mine and let you know what settings I have, but it seems something isn't correct with your modules / setup. From what I see in your screenshots it looks like you have the Tx and Rx pins connected as you are seeing "returns" when you send "AT", however as you only see...

Hi Good you are seeing something, but not what's expected and I think it's as Martin suggested. Two quick and easy checks to do. The first:- Connect the USB adapter to your PC and open Terminal. Set Terminal to anything you want (e.g. 9600 Baud, 8-1-N) Do not insert any ESP8266 module into the adapt...

Hi The reason I'm asking for the above pictures is that I'm a bit unsure of your USB / ESP8266 devices. It looks like you may have a "piggy back" USB device that connects to your PC and allows the ESP to just plug in, specifically designed for use with the ESP. If so, then you would need to first te...

Hi

Can you send me a picture of only your esp8266 module, and another of only your USB-TTL serial adapter?

Regards

Hi I think Reset needs to connect to +3.3v too, but as you are measuring that on the pins (Reset / CH_PD) it appears they do have weak pull-ups fitted. Try with a Baud of 9600 / 38400 I'm quite familiar with the terminal program you are using and from what I see things are correct, but perhaps try t...

Hi

This may help

Regards

Hi I'm not familiar with that program but did find a helpful page here https://learn.sparkfun.com/tutorials/terminal-basics/coolterm-windows-mac-linux To check if an adapter is working, connect the Tx pin to the Rx pin. Anything sent will then be returned to you. Once you get that confirmed you can ...

Hi The modules most likely have Weak Pull Ups already installed so you probably don't need to include any. Won't really harm to include though. These boards only run at +3.3v so do not connect +5v to VCC or Kaboom...... Depending on what you read, the GPIO / Rx pins are +5v tolerant, or not. I have ...

Hi Initially it can be a little confusing. First things first, when dealing with any UART it is extremely helpful to have a USB-TTL Serial converter such as this https://www.amazon.co.uk/Fasizi-converter-CH340G-Serial-Adapter/dp/B09Z2GZVZY/ref=sr_1_9?crid=1KSBNU1N88TY9&dib=eyJ2IjoiMSJ9.4eOW8FmnA_Msi...

Hi "Rz = ground (StringToFloat$ (Sz),2)", but simply "StringToFloat$". What is the difference between them? I think you have a typo in that ground should be fround which rounds a floating point to "x" decimal places, in this case 2. If Sz was a string with value "123.456" Rz = fround(StringToFloat$(...

Hi A one-second-flash test is a really useful test especially if using a new chip or messing with clocks. It's also known as a "sanity check" as an incorrect clock can drive you crazy. Basically it is one of the simplest tests to perform. Connect an LED or a Scope to a pin on your chip then create t...

Hi

When you say "without quartz" do you mean the chip is configured to run on it's internal oscillator? If so it's quite easy to overlook a setting so running a one-second flash test is really helpful to ensure it's running as it should.

Regards

Hi Abhi Totally agree with you regarding a proper PCB vs the "rat's nest" once we know the circuit works. Not everyone has access to such though but free software such as KiCad really helps with layout etc. ProtoBoard / VeroBoard is OK if not too complicated but of course the initial development can...

Hi ood afternoon! I want to argue with you. The option that you suggested will not work in real devices. You wrote that to fix the problem, you connected the ground("-") of one board to the ground ("-") of another board. This is suitable when everything is nearby and on the same table. And when ther...

Hi The development boards have buttons and LCDs so I could copy your setup. As mentioned I connected an analyser to the Tx pin (which is also Rx pin of other chip) and recorded everything being sent correctly. However I did notice that on ocassion I got an incorrect value displayed on the receiver. ...

Hi

I wanted to send the number 0x55 according to your request, in the decimal system it is 85. But it is not displayed on the lcd screen.

Not sure where you are setting the value, but remember that in your chart if "a" > 25 then it resets to 0

Regards