BriComp
Senior Member

You can use the Teensy to connect to an ESP32 via Serial. The WebServer will be on ESP32 which communicates with Teensy.

I believe Locked Teensy T4.1s are only available BUILT from PJRC.

Have you had a look at SPI.cpp? This might have the answer to your question/conundrum.

It may be that the Teensy is starting up Too Quickly for the MCP23S17's when you start to initialise them. The chips may simple be not ready to be initialised. This is born out by putting a delay at the head of the...

Can I suggest that when you post code that you enclose it between CODE tags using the # button above. It makes your code so much more readable and therefore easier for others to potentially help you. EDIT: You seem...

Then why is it still included with Teensyduino as an example?

If you examine SPI.h you will find that beginTransaction uses SPISetting(clock, bitOrder, dataMode) to setup the SPI port. If you are not USING SPI transactions then set SPI_HAS_TRANSACTION to 0 on line 30 and use...

Yes but will it be included in future Teensyduino?

I have that same erroneous code shown in #10 and I am running Teensyduino 1.58b3. Presumably this code was installed by TeensyDuino. Can it be arranged for the corrected version be installed with Teensyduino?

If you were to examine OctoWS2811.h and OctoWS2811.cpp you would see that the library already uses DMA.

As an aside, why not use something like this. It handles all your keyboard scanning and only requires two pins (3 if you include interrupt).

The Snooze wake up times are rather long for the T4.0. See here.

This post might help you. See post #16 onwards.

See a needed correction to the Snooze Library here.

Yes and deleted all the parameters which you did not require, unfortunately YOU DID NOT delete the digital parameter. As I said I don't know if it will make any difference but without setting up the digital component...

Firstly could you enclose any code posted between CODE tags using the # button as I have done below. #include <Snooze.h> SnoozeDigital digital; SnoozeTimer timer; SnoozeBlock config_teensy40(digital, timer); ...

Any code for the Teensy has to be programmed into the Teensy. You can not just place it onto an SD card. I suggest you read this about getting started with Arduino. Think of the Teensy as a supercharged Arduino. ...

You might find this useful.

Ok, thanks for that. I agree with Patents and Agreements. They are only any good if you have the money and are happy to sue. I used to work for a firm where the Proprietor (before going Public) had an idea and...

The only UK distributor with them in stock is OakTree LLC but they are charging a before tax price of $30.40. I have converted for exchange rate and tax. This is a 28% mark up on retail price! I thought you were...

Could you not use this chip for your keyboard. You could then just use one T4.1 or T4.0?

Did you mean RayMing Pcb Assembly?

Make sure you get a quote for shipping and extra fees before you start, or do a small test run. There are other companies doing the same thing. Of course it would be nice if someone on this board would act as an...

If buying in the US and shipping to the UK you might consider MyUs.com. Register with them and you get a US address. I.e. buy from PJRC giving your US address. Items get shipped to MyUs who then ship them on to you in...

Yes it does say Gold plated on the Male-Male parts. I must say that I had not noticed before. The advantage of the turned pin sockets beside low insertion and extraction forces is the fact that they are very low...

I see. I never use Teensy's soldered in. I use turned pin low profile plugs and sockets like this and this.

I'm confused, I meant use the one that had been using when you experienced problems.

If you wanted to rule out the Teensy, you could put it into your latest PCB and test to see if things are still stable.

Just downloaded Audio Guestbook, set USB Type to Serial + MTP Disk (Experimental), set cpu to Teensy 3.6 and compiled just fine using TeensyDuino 1.58b3. Note that you will have to alter the program to work with Teensy...

//// pin assignments // Teensy 3.5/4.0/4.1 - These assignments work across all versions const uint8_t PWM_SPEED_PIN(2); const uint8_t BRAKE_PIN(3); const uint8_t MOTOR_DIR_PIN(4); const uint8_t LED_BUILTIN_PIN(13);...

Please read the FORUM RULE. Show Source code.

Yes, but you don't have to wait for any reply. Simply flag that a confirmation/reply is expected and pick up that confirmation when appropriate. The confirmation will be waiting in the serial input buffer.

Copy the code, assuming you are using Windows, highlight the code, right click on the highlighted code and press copy. Press the # button at the top of the Teensy Reply Form. will appear. Paste your code between...

I don't know anything about your Nextion handler, but I have written a Library for the Nextion. It is intended as a foundation for a user's Nextion Comms. It contains a lot of functionality and will have all that most...

He wants to I don't think your suggestions achieve that.

What makes Paul able to manufacture Teensies without any one copying them?

You could use a Teensy 4.1 which has Ethernet hardware built in. You are going to get some proficiency in coding. Do you have the code (source) for the 3.2 and Arduino?

This is something I found when Googling Haltech Can Protocol.

Usual to put de-coupling Cs as close as possible to each IC across the supply lines.

If it is NOT getting past while (!Serial) it means that the Teensy is NOT seeing the computer USB Serial port. It would be better written as:-Serial.begin; While (!Serial && millis() < 5000){};This will case the...

First of all can you enclose your code between CODE tags. You can insert them into your posts using the # button. It just makes your code easier to read and understand and makes it easier for others to help you....

If you want (true) serial output use Serial1, Serial2 or Serial3. Serial (USB) outputs to USB or Hid.

Or you could consider something like this.Battery based power bank with 5V and 3.3V output and battery charging/management.

Test points as I said. See here.

Test points used during manufacture to test product.

This is the one I have been using and is the one refered to in my post. Obviously you have to be aware of rollover of the millis and micro, especially the latter. Perhaps do some zeroing/resetting each time you take a...

The following might give you some ideas of what is possible. Note I have compiled it but NOT RUN/TESTED it!// Visual Micro is in vMicro>General>Tutorial Mode // /* Name: t4.ino Created: 14/12/2022...

You have the INTerrupt pin on the RV3028. This can be set up for repetitive interrupt. See the RV-3028 Manual.

Yes. Put a BAT54S on the input to the Teensy. Should solve that problem.

Could also check on amount of EEPROM present, if you don't add to the T4.0 board.

Below is code from FlexIO.h#if defined(ARDUINO_TEENSY41) static const uint8_t CNT_FLEX_PINS = 22; static const uint8_t CNT_FLEX_IO_OBJECT = 3; #elif defined(ARDUINO_TEENSY_MICROMOD) static const uint8_t...

How about this.

Use this link to FlasherX.

OK I see, so returns the size of the array type not the size of the array. I like the way C/C++ makes things so uncomplicated!!

Just looking at the arduino code, I am slightly confused by for(byte i=0; i < (sizeof(msg2)/sizeof(msg2)); i++) { Serial.write(msg2); } Why did you do that and not for(byte i=0; i < sizeof(msg2); i++) ...

Ok, try deleting the Serial1.setTimeout(0.1); in SetUp. I don't know why it should make any difference. Equally I don't see why it is required. I have just had a thought about the serial buffer size. I will get...

Hi @Timon, the reason for asking for the code is so that it can be run and the problem experienced and hopefully sorted. I have re-written your send / receive code in a different manner, please give that a try and see...

Your code does NOT COMPILE. Full of Errors!

Both Cool Components and Pi Hut ship from UK to Spain. I don't think that their shipping costs are horrendous.

What is your country?

Please DON'T double post! See reply on other stream/blog.

Same Audio board for T4.0 and T4.1. If you use T4.1 you have the option of using the SD on the Audio Board or the one on the T4.1. The T4.1 SD is faster than the Audio Board SD.

The Teensy 3.1 (T3.1) is 5V tolerant so you could just have a Resistor between O and V and take the O output into the T3.1. Alternatively, if you do wish to limit the Teensy input to 3.3V, simply have a Resistor...

No problem. Sometimes we can get too involved in the nitty gritty without stepping back and looking for simplicity.

On Teensy 4.1 Wire.begin() .... Configures pins 18 & 19 as I2C (I2C port0) Wire1.begin() .. Configures pins 16 & 17 as I2C (I2C port1) Wire2.begin() .. Configures pins 24 & 25 as I2C (I2C port2) So, to answer your...

@GazTech was enquiring about using digitalRead() and digitalWrite() on I2C ports other than the one he wished to use. I.e. using the pins of Wire2 for digital IO when using Wire for I2C comms.

I would have thought that you can (should) use pinMode(??,??); after using Wire.begin().

From the manufacturers web site "E32-TTL-1Wcan be compatible with other E32 modules." I don't know why @Moonman does not use @KrisKasprzak's E32 library. He (@moonman) had previously said that he was going to use...

Try VisualMicro with Visual Studio. No Problems, No Hassles. PS. My only connection to Visual Micro is as a satisfied user.

What should be used to turn it back on?