BriComp
Senior Member

As a simple solution you could use #define Wire Wire1 at the head of the .cpp files.

Don't forget to measure the 100 Ohm resistor. With tolerance, it will not be 100 Ohms.

Cool Components have T4.1 with pins £28.99

Here I am, back again, a little late I am afraid. Ok, P at 80 psi, Sensor resistance (Sr) = 25 Ohm Current (I) flowing = 3.3V/(25 + 100 ) = 0.0264 Amp V across Sr = I * Sr = 0.0264 * 25 = 0.66V 3.3V gives 1023 on...

I will have a look tomorrow.

Great, I'm glad I was able to help. I have developed a library for the Nextion if you are interested. Really it's a skeletal library with the intention that the user modifies/expands to suit their application.

The equation will be of a different form. With the Sensor at the top there is a positive slope with a negative intercept. With the Sensor at the bottom you have a negative slope and a positive intercept.

Swapping the resistor and the sensor around gives these results for a 100 Ohm resistor.

Fastest is to pack the data into ONE variable. Something along the lines pd=x1*256*256*256 + y1*256*256 + x2*256 + y2

3.3V will give 1023, therefore 2.52V will give 2.52/3.3*1023. Likewise 0.8327V gives 258. You could swap the Sensor and 81Ohm resistor around but you would have to re-calculate the Voltage/Count codes. Chose 81Ohms to...

Yea, not too difficult. When you receive the line to be plotted, save the co-ordinates in Nextion Global Variables in Program.s. I suggest x1,y1,x2,y2. Set these up as some dummy values at the start of the program,...

I would suggest that you should wire up the pressure sender something like below: At 0 psi S1 will be 240 Ohms. Therefore the Current flowing will be (I=V/R) 3.3 / (240 + 81 ) = .01A ( 10mA ) Voltage at V across R2...

Thanks, it looks like a good read. Just printed it off.

const int channel = 10; // General MIDI: channel 10 = percussion sounds const int note = 38; // General MIDI: note 38 = acoustic snare const int analogPin = A0; const int thresholdMin = 60; // minimum reading,...

This link does not work.

I have no done anything with Audio yet but could it be a buffer not large enough?

Works ok for me. VM + VS 22

Relatively simple (I think) just create an instance of bmp passing the correct wire to it. See below:- //Use this Adafruit_BMP280 bmp(&Wire1); // I2C //Rather than Adafruit_BMP280 bmp; // I2CYou should note that I...

I guess you should have it in a week, unless you chose courier delivery.

Where are you located?

Pimoroni have them, see here.

/* SD card basic directory list example This example shows how to create and destroy an SD card file The circuit: * SD card attached to SPI bus as follows: ** MOSI - pin 11, pin 7 on Teensy with audio board **...

Surely this only remains true if the Sensor current is constant.

As I understand it the Receiving device on USB is a slave. You asked to move data from RPI to T4.1 (Master to Slave).

As a possible alternative solution you could try a hybrid hardware/software solution using an AND gate. Look at the diagram below: "input" is the signal you want to mimic / shorten. When "gate" is high everything...

#include <Audio.h> AudioInputI2S input; AudioAnalyzeFFT1024 fft; AudioConnection connection(input, 0, fft, 0); void setup() { Serial.begin(9600); AudioMemory(50); }

#include <SD.h> // change this to match your SD shield or module; // Teensy 2.0: pin 0 // Teensy++ 2.0: pin 20 // Wiz820+SD board: pin 4 // Teensy audio board: pin 10 // Teensy 3.5 & 3.6 & 4.1 on-board:...

I was replying to your quote

Make sure the SD library in the Arduino Libraries directory is deleted. If left in place it can be conflicting with the sd.h in the Teensy Libraries.

I quite often use the full path to library files where possible alternatives exist as in I also keep all my Arduino program files ( .ino and LIBRARIES ) in a directory called C:\Arduino Programs. I do this because I...

It should be free for a months trial. Is there anything which says something like "Activate free trial"? I use the VMicro drop down followed by "Open existing Arduino Project / New Arduino Project" to open / create the...

Yea, I gather that it sort of sits on top of the Arduino environment. I think this is sort of confirmed by one of it's configuration options to "Re-scan Tool -chains and Libraries". It just sort of sits there and...

I use VisualMicro and Visual Studio. No problem they can sit side by side with the ino on the address bar.

Does it change to false if USB disconnected?

As I said earlier if you use write you are sending 4 BYTES of BINARY data. If you used print that binary data is converted into MANY MORE BYTES is ASCII text. uint32_t num; num = 1094795585; // = 0xAAAA ...

Your program writes to the USB Serial port, then you unplug the USB Serial port. Don't you think that this might have an effect?

We need to see your program.

Try using mySerial.print. This translates the data into ASCII values. .write just sends raw binary data that is why you are seeing "nonsense letters".

Lora is Synonymous with long range. If you only want to send data it should be fine. I use these which communicate with the Teensy using the Serial interface. There are other Lora/Uart modules in their range. Search...

I really don't see your problem. All the data is there to hook up the display(s) and with the software to drive it!

Could it be an un-initialised variable taking a different state on start-up.

Could this go in the WiKi or be included with the example ino?

The t4.x's have components on the underside of the boards. You MUST leave a gap for these components or have your PCB routed to allow for these components.

I would recommend Visual Micro with Visual Studio. It gives the stability/understanding of the Arduino system with the IDE of visual studio and Teensy Debugging. I use it all the time and would not go back. I have used...

Have a look here for VGA output.

How about functions analogWrite16 and analogWriteFrequency16? Perhaps with the proviso that you must/cannot jump between analogWrite & analogWrite16 and the same for ..frequency.

You can always preserve your current Arduino environment, do your tests, and if necessary put the original back. I use this scheme:- 1: Click and open Program Files (x86) 2: Right click Arduino and select Copy 3:...

Is this in the WiKi?

There's sort of a way. Click on a persons name/id, then select view forum posts. A page of that person's posts will appear. To search on the page, if using edge, click the ... at the top of the page and select find on...

Did you have it wired exactly as in the graphic, because it shows the GPIOx going into the 3.3V pin?

Perhaps you could use this version of Software Serial. Claims to be good at slow speed and can use any two GPIO pins.

Could you not user Serial3, it's right next door to Serial2?

I find the adum1201 very good and compact (see here) adn as a module can be bought at places like this.

#include <Audio.h> #include <Wire.h> #include <SPI.h> #include <SD.h> #include <SerialFlash.h> #include <NewPing.h> // GUItool: begin automatically generated code AudioSynthWaveform waveform1; //xy=343,338...

Above is a spreadsheet version of @Richardsons excellent info.

If you look at it properly it's NOT just the top line, that would be easy. Look at GPIO7 does 32 belong under 19 or 20? pin 9 under 18 or 19 etc?

You should really say what program should be used to display the .txt file when you attempt to align columns in a text file. As you can see the columns do NOT line up when viewed with notepad in Windows. The only...

There definitively would be a market for something like that. The only problem would be the Marketing required to make it happen. In the past I designed the electronics and software for the Renishaw Rapid...

Could you use the T4.1? It has 2X T3.2 EEPROM and 4X T4.0 EEPROM.

Possibly something to do with the Serial.print/.println filling up a buffer and then slowing down. Which USB Serial are you using? There is a problem with the Arduino serial monitor, in that it is not fast enough for...

Thanks for that, I was trying to make it as flexible as possible and also easy to use.I did a similar thing in the past! Was spending so much time and attention at RX/TX orientation that I completely forgot about the...

I have written a library to communicate with the Nextion. It has most of the I/O conditions covered but is in reality a skeleton Library which is intended to be expanded by the user. You can see it here, In includes...

Have a look at this. It is an example of how the HMI design can be much easier.

Since it is I2C, should be simple to use the Arduino Libraries. See here. Obviously connecting to the LC I2C ports.