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I guess it depends on what you want the display to do, I've only ever worked with gui front ends with images, fonts, touch screen and widgets then use an intelligent controller such as EVE4 series from Bridgetek (Rudolph library) or Nextion (BriComp library), these support up to 10" display...

Define fast... are we talking a few KB or tens of MB a second?

I reckon its on line 42 - its the answer to life, the universe and everything. Apparently...

Have you come across the Teensy MicroMod ? https://www.sparkfun.com/products/16402 Not quite as many IO as you propose but is already commercially available off the shelf

The answer must be yes, but by how much I don't know. What about adding some SPI FRAM which can be written very fast many many times?

Going back to the OP, I guess the solution depends on what level of accuracy and precsision is required.

FWIW trying to establish the distance moved by a train based its wheel rotation you quickly loose accuracy, which quickly accumlates over time and distance. When I worked on an ETCS project a few years back we had to resync actual train location with calculated train location using trackside...

How would it perform on the much faster T4.x?

Do you really need to generate a VR signal for the ECU under test? A VR signal ranges from very low voltatges to 10s of volts possibly 100's! Are you developing a VR Conditioner yourself or does the ECU already use one such as the MAX9926 or LM1815? Most ECUs would be more than happy to accept...

I've always kept the ISR handler to an absolute minimum, ie set flag / store data and the main loop checks for said flag and process the stored data. I never call Serial.printf within an ISR, even other "library" functions if at all possible.

How about renaming the new function? Do you know how to do that?

I think the following bit of code is incorrect tft.print(???); I susepct it needs to loop through the data, converting the data bytes to a hex string, append that to result string and then display the result string. What have you tried?

Be interested to know what platform you have experience in to achieve these requirements?

Looks like you have made great progress! I have found "bread boarding" a prototype, whilst quick, can cause lots of inconsistant phantom issues which you can waste hours trying to solve. How long does the screen take to render the above picture? (which I guess is not the complete screen resolution)

Note sure what update rate you require for your display, but you could look at the EVE4 range of intelligent controllers. These support smaller displays plus larger 5", 7", 10.1" and 12" displays via SPI at 60Hz frame rate and support touch. Teensy 4 driver and example are available, I use...

Is this similar to the "Nagle Algorithm" which attempts to improve efficiency by buffering small data chunks into larger packets when using TCP/IP? i.e. improving ratio of data vs overhead / housekeeping etc. First thing to disable on a real-time system.

I assume you have a serial connection to your board, if not you won't get past startup.

+1 for the Ada Ultimate GPS Module for my own very similar application (race car dashboard) at 5Hz, you will not get better than 2-3 meter absolute accuracy, but relative accuracy over the course of a race is good enough to show lines, etc. I tried 10Hz but it didnt actually make much of a...

From the 817/8 data sheet - "BT817/8 supports Horizontal Scanout Filter (HSF) operation. The HSF applies a high-quality filter to output pixels, correcting for LCD panels with non-square pixels (the physical size of the LCD pixel is not square). HSF is enabled and disabled with CMD_HSF. Note...

If you are using the 7" screen from Riverdi, you may have found that the pixels are not square. on the BT817, you can set horizontal resolution to 1076 to get things nice and square again, only really noticeable if you draw circles... #define EVE_HSIZE (1076L) #define EVE_HSF (1024L)

If it helps, I am reading 4 MAX31855s using this library https://github.com/RobTillaart/MAX31855_RT on a T4.0 running at full speed. All I needed to do was set CS line to use hardware SPI, though you can define your own CLK, CS and MISO lines in the constructor. I am using v0.2.5 of the driver...

EVE2 is an very old version of the controller... even so it should still work. I have used EVE2 on a LPC4088 MBED years ago, but have moved to EVE4 / Teensy 4.1 / 7" display more recently. Connections look good, though I also have EVE pin 20 (backlight ground) to ground. Also I have tied PD to...

SOrry for late reply, EVE libary can be found here https://github.com/RudolphRiedel/FT800-FT813, library is actively maintained and expanded with plenty of examples. Note that the EVE displays are intelligent, you don't manipulate pixels in a frame buffer directly, but rather use primitives such...

My goto display board for Microcontrollers are the EVE3 or EVE4 intelligent display IC's from Bridgetek, you can get them built into a nice sunlight display module from the likes of Riverdi, MatrixOrbital etc. SPI interface, high brightness, plenty of space for graphics, with or without touch...

Have you thought about using the EVE4 controller with 5", 7" or 10" display? I've been using an EVE2 5" for years in my race cars, and have just moved to an EVE4 7" display with the teensy 4 (1026x600). More than adequate for dash board display, 1000 nits as well. Not gone touch screen as its...

Lookup i2t for fuse modelling. Use Suitable connectors, protect and filter all inputs. You’ll need some way of testing large loads out of the car, I used 12v heater, spot lights etc, lastly be prepared to fry quite a few boards as you develop! I converted user logic from text to a p-code to run...

Fixed link - awesome project! https://github.com/Jean-MarcHarvengt/MCUME/blob/master/README.md

lol - I'm a windows guy, and was getting stuck at the same place even with the same connection details. Thanks for trying!

love to try this as well, what sort of terminal emulator do you need for windows and how do you get it to actually run?

All three of my T4.1 use the MIMXRT1062DVJ6A processor, there is a newer revision called MIMXRT1062DVJ6B which I presume will be used from now on. IMHO there's no earthly reason to stop using T4.1!

Hi All, I've got a small Teensy LC based project to remote switch 4 channels using the Adafruit RFM69HCW at 433Mhz. The transmitter is powered by a 3.7 v 500 mAh lipo connected to teensy VIN. I've installed Arduino v1.8.13, Teensyduino 1.53, and I'm using using the handy snooze library (@...