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I found these stockists using Google:

Thanks for reporting the above. It's interesting and very useful information.

Whilst I think about this "(100ms, 200ms, up to 1000ms)" is glacial for a Teensy at 600MHz. Are you saying that you don't want/need to use a Teensy but want us to specify a board to use with your PLC?

Please show us your code/program. Perhaps you are using code specific to Arduino boards. I assure you that the Teensy family can be programmed in the Arduino environment.

Perhaps it would help if you describe what you are trying to do, I know you want to read inputs and control some outputs but you have not said anything about time for readings/switching etc. Please describe the problem you are trying to solve or what you are trying to control and maybe we can...

That uses ModBus, it says it in the title.

Please show your code and possibly a photo of setup. Almost impossible to help without that information.

Yes

AI (Artificial Inintelligence!) has got it wrong. Some Arduino boards share pins 0 and 1 (Rx/Tx) with USB BUT Teensy does NOT. Teensy USB is completely separate from Serial (pins 0 and 1). Some confusion creeps in as USB is called Serial (for compatibility with Arduino) and UART Serial is...

Yes, but it's not very expensive to buy a licence. $65 for perpetual licence or $19 per year. I bought a perpetual licence for 3 computers.

People have quite a lot of problems with PlatformIO. If you want to get away from the Arduino IDE to something better. Consider using VisualMicro with VisualStudio. Visual micro sits on top of the Arduino and maintains it's structure. This ensures compatibility. It also has built in debugging...

Teensy to Teensy OTA has been shown to work. Properly programmed and ESP32 should be able to do OTA to a Teensy.

from paul's github.

Have you tried a different cable? Sometimes Teensy 4.x's faster USB exhibits this sort of behaviour with cables that are not quite up to it. This would explain the sometimes it works and sometimes it doesn't.

I think that now that SparkFun are doing the Teensy manufacture Paul will have more time to devote to new Teensy Ideas and projects. How are you keeping. Fine I hope.

Who Knows!!? Frank, Best wishes nice to see you back again.

Further Info/Reading ESP32 Transmission Types Capability, Using ESP_Now with multiple hops/repeaters. ESP_NOW_LR - Long range up to 1Km. I am not advocating ignoring Teensy, just use Teensy for data gathering and ESP32 (ESP_NOW) for data transmission. Talk to ESP32 with high speed serial...

I would have thought LORA (You know all about that) or ESP_NOW would suffice.

I think you might have a circuit problem. 4 x Teensy 4 burnt out, Teensy LC not working properly! Power removed from 5V, assuming you don't have smoothing capacitors, re-apply voltage WILL start from SetUp.

You could use something like the SX1509 which has a built in keyboard scanner/decoder which can handle up to 8x8 keypads.

I've been using Teensy and this forum for 11 years and I don't recall anything.

I think I have about 10 T3.5's if anyone wants them.

Glad you got it working satisfactorily.

Apologies but my brain is not working at it's best today, but it seems to me that you just need to limit the update rate of the display. How about something like the following: elapsedMillis lastVideoUpdate; #define minNotUpdateTime 15 void VideoDisplay() { if (lastVideoUpdate >...

@pierrotm777, I wasn't talking about your post in isolation, just the whole subject matter. Go on buy a Teensy and support PJRC that brought all the Teensy goodness to us - Teensies, Teensyduino and of course this Forum.

SHOULD THIS REALLY BE CONTINUED ON THE TEENSY FORUM? IT DOESN'T SEEM TO SUPPORT OR BE ABOUT THE PJRC PRODUCT RANGE!

When you post code on this forum can you please use the </> button. Doing so maintains the code formatting and makes it easier for others to understand your code and be able to better help you. Below is the code. #include <Arduino.h> #include <IntervalTimer.h> // ----- Global Parameters (set...

The specification says that it will work with an input of 2V-5V. Here is an article with the 8002 amplifier working with an ESP32 (3.3V). No reason why it won't work on a Teensy.

It will NOT have the 5V pin. Search for Teensy Host connector, a number of suppliers have them...Pimoroni, protosupplies etc.

Just thought it might be possible to run small wires from the vias to your pcb usb connection point(s).

I believe that the USB data lines can be accessed at the vias circled in the picture below. I am not sure which two of the 3 circled are the correct ones. Perhaps Paul can chime in.

No, but you can install it via the Arduino IDE Library Manager or alternatively from GitHub here.

I would suggest that you use QNEthernet. NativeEthernet is old and no longer supported by it's Author. QNEthernet is newer and actively supported by it's Author.

Please supply connection photo and code. When adding code use the </> button.

Could you install the Arduino IDE, preferably version 1.18.19, and then Teensyduino. Then see if you can program the Teensy's. A lot of people seem to have problems with PlatformIO. Personally I use Visual Micro with Microsoft Visual Studio. So much better than the Arduino IDE and without the...

Be aware that the I/O pins on the Teensy 4 .1 are NOT 5V compatible and MUST operate at 3.3V. Putting 5V on any Teensy pin will likely KILL that pin and potentially the Teensy as well. It might help if you stated which Wiegand rfid you are using and your circuit for driving the relay(s).

You need to allow access to here.

You could post it here.

Above translates to: Hello, I want to buy it, how can I buy it?

Have a look at VisualMicro. It works with Visual Studio and also offers The plug-in allows you to use breakpoints for step-by-step execution, monitor execution time between breakpoints, and set conditional breakpoints based on data or hit count. I wouldn't be without it.

It can be used with Atmel Studio.

I know what you are saying but Visual Studio Community is FREE and Visual Micro can be used for 45 days before you have to buy it and then only US$19 a year (US$1.58 a MONTH). $1.58 a Month for hassle free development.

Have a look at VisualMicro. It works with Visual Studio and also offers The plug-in allows you to use breakpoints for step-by-step execution, monitor execution time between breakpoints, and set conditional breakpoints based on data or hit count. I wouldn't be without it.

Yes.

Below is a connection diagram for you. What follows is an explanation of connections: VDD refers to the voltage level for a side be it side 1 (A) or side 2 (B). In the diagram below Side 1 (A) has been chosen for the Teensy and Side 2 (B) for the Nano. VI refers to an INPUT Voltage to the level...

Teensy LC to T4.1 is ok, they are both 3.3V. For nano to Teensy LC or 4.1 use an Adum1201 for level shifting (5V to 3.3V). The Adum1201 is designed for Serial Comms level shifting. It is possible to buy ready made Adum1201 modules. See here and here.

I use RV-3028-C7 on my boards/systems. The standby current is quoted in nA with an accuracy of +/-1ppm.

You have not said how you wish to use the output. It's difficult to make recommendations without that data.

So what is your question?

It is.