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  1. Replies
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    Is there somewhere I can download an example code...

    Is there somewhere I can download an example code for use with the Teensy 4 and ILI9341 ?
  2. I wonder if the postoffice will shut. If it does...

    I wonder if the postoffice will shut. If it does then I will have to shut my online store.

    Actually it wouldn't make that much difference, sales has been right down.
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    It is not very clear from the photo but have you...

    It is not very clear from the photo but have you actually soldered some header pins on to the Teensy then plug it onto the bread board?

    Looks like the RX1 and TX1 on the Teensy is not connected to...
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    Wow, that is smooth. Would it be possible for...

    Wow, that is smooth.

    Would it be possible for you to share the code ?
  5. @mjs513 Using frame buffer works. No flicker on...

    @mjs513 Using frame buffer works. No flicker on screen now.

    @KurtE Using opaque fonts also works.

    Now I have choice of which one to use. I will continue with my project.

    Thanks for...
  6. Anyway to stop flickering during update on ILI9341 display ?

    I'm using a 2.8" ILI9341 LCD on Teensy 4.0
    To update a counter I first fill a rectangle with the background colour to erase the old number the print the new number.
    There is alway a small annoying...
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    The Pyboard D-series uses an interesting concept....

    The Pyboard D-series uses an interesting concept. Big thru holes at 0.1" pitch then smaller holes between the 0.1" hole. Making the pitch 0.05".
    You can get 0.05" pin header and sockets from Mouser....
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    Using high density connectors like the one on the...

    Using high density connectors like the one on the Portenta H7 is going to make prototyping an add on board quite difficult. Not only the fine pitch but spacing between the two connector is quite...
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    Yes, a preview of the layout would be nice.

    Yes, a preview of the layout would be nice.
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    Don't think anyone has written a CANopen stack...

    Don't think anyone has written a CANopen stack for Teensy.

    The nearest CANopen I've found is for the mbed module. You might be able to port that to the Teensy....
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    Try this code:...

    Try this code:
    https://github.com/skpang/Teensy_CAN-Bus_ECU_reader




    https://www.youtube.com/watch?time_continue=1&v=hlEDgPzolJg&feature=emb_logo
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    Which one is best to use on Teensy 4.0 ?...

    Which one is best to use on Teensy 4.0 ? Circuitpython or Micropython ?
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    I can't see any screenshoots. Is there anyway...

    I can't see any screenshoots.

    Is there anyway to get a pre-build version ? I don't have Visual studio or Visual C++ installed. In fact, I'm using a Mac.
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    Looks interesting. Does the install run on a...

    Looks interesting. Does the install run on a PC,Mac or Linux ? What about when running the example ?
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    Try and set a higher sampling rate on your Saleae.

    Try and set a higher sampling rate on your Saleae.
  16. Wow ST7735_t3 works without changing anything. I...

    Wow ST7735_t3 works without changing anything. I see the SPI clock is at 24MHz and it works. Not sure why I used Adafruit's one in the first place.

    Many thanks.
  17. How to slow down SPI clock for Adafruit-ST7735 library ?

    I'm trying to use Adafruit 240x240 TFT LCD https://www.adafruit.com/product/3787

    With their library
    https://github.com/adafruit/Adafruit-ST7735-Library...
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    @tannewt is there any CAN and CAN FD support on...

    @tannewt is there any CAN and CAN FD support on CircuitPython ?
  19. Replies
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    Works fine on MacOS Catalina with Teensy 3.2,...

    Works fine on MacOS Catalina with Teensy 3.2, 3.6, 4.0
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    Could be a power up problem. How are you powering...

    Could be a power up problem. How are you powering the T3.2 and the CAN transceiver ?

    Post the schematic and some photos of the setup.
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    Teensy 4.0 vs PORTENTA H7

    Arduino has just announced the PORTENTA H7

    https://store.arduino.cc/portenta-h7

    Not quite a fair comparison to the Teensy 4.0 but it has some pretty impressive features.

    Interesting it has...
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    Just tried Sumotoy's font conversion tutorial. It...

    Just tried Sumotoy's font conversion tutorial. It works !!!

    Initially the converter software only listed the Arial font. I didn't really want to use that font because I believe it is copy righted....
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    Any decent fonts for RA8875 display ?

    I'm using Sumotoy's RA8875 driver on a Teensy 4.0

    The display and driver works but I found the font is a bit strange.

    The aerial_22 and aerial_48 font doesn't look like Arial font and aerial_48...
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    From what I can see on the photo the wiring still...

    From what I can see on the photo the wiring still doesn't look right. On the 5v rail on the breadboard there is a cap connected to it but it does not look like it is connected to the transceiver....
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    Don't think you have wired the transceiver up...

    Don't think you have wired the transceiver up correctly. There is a separate supply for Vio (pin 5), you need to connect to this the 3.3v supply but it looks like you have connected to the 5v supply....
  26. Thread: CanBUS joystick

    by skpang
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    How much does the joystick cost ? They look...

    How much does the joystick cost ? They look expensive.
  27. Replies
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    You don't need a voltage divider on the CAN_TX...

    You don't need a voltage divider on the CAN_TX line because the signal is coming from the Teensy. What resistor value did you used ? Post a photo of the setup.
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    How did you check the pins on the Teensy 3.6 are...

    How did you check the pins on the Teensy 3.6 are still ok ? The CANH and CANL doesn't connect to the T3.6.

    You can try and add a voltage divider from CAN_RX (CRX pin) to the T3.6 but damage might...
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    The Teensy 3.6 is not 5v input tolerant. The way...

    The Teensy 3.6 is not 5v input tolerant. The way you have connected the MCP2551 to the 5v supply and the logic out to the T3.6 is 5v. You might have damaged the T3.6.

    You also need a 120R...
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    I'm not talking about whether the pixel are...

    I'm not talking about whether the pixel are square or round. I've used some large LCD, when I draw a circle, its not 100% round. It's an oval shape.
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    I see the 10.1" display has a dot pitch of...

    I see the 10.1" display has a dot pitch of 0.2175(W)x0.2088(H)mm. Do you have any problem drawing a circle ? Does it look round ?

    I had loads of problems with non square pixels trying to draw...
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    Wow the 1170 is a huge chip. 289 pin BGA. 3 x CAN...

    Wow the 1170 is a huge chip. 289 pin BGA. 3 x CAN FD. Routing would be a challenge.

    Would this be called Teensy 5.0 ?
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    You can use SMD connector like this one:...

    You can use SMD connector like this one:
    https://www.digikey.co.uk/product-detail/en/0015910100/WM17459-ND

    Soldering the connector on can be quite tricky.
  34. My .02 Keep it simple. Make the T4 in T3.6...

    My .02

    Keep it simple. Make the T4 in T3.6 format. Have a uSD holder and bring D24 to D33 to the through holes.
  35. Having only one row on each side means you can...

    Having only one row on each side means you can plug into a breadboard. Two rows you can't.
  36. Replies
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    You can use this one:...

    You can use this one:
    http://skpang.co.uk/catalog/canbus-breakout-board-33v-teensy-31-compatible-p-1396.html
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    Teensy 3.2 ECU reader project via the OBDII port:...

    Teensy 3.2 ECU reader project via the OBDII port:
    https://www.youtube.com/watch?v=hlEDgPzolJg&t=18s

    Source code:
    https://github.com/skpang/Teensy_CAN-Bus_ECU_reader
  38. Replies
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    If you want to connect the Teensy to the CAN-bus...

    If you want to connect the Teensy to the CAN-bus then you would need a transceiver IC.

    There are many tutorials on Youtube.

    Try this one:
    https://www.youtube.com/watch?v=ledYMrZRuL8
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    You can also get 7" LCD with SPI but be careful...

    You can also get 7" LCD with SPI but be careful with them. Some of them the pixel is not square. That means drawing circle does not look like a circle on screen. Square is not square !!

    18168
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    You can get 5" LCD with SPI. ...

    You can get 5" LCD with SPI.

    https://www.buydisplay.com/default/5-inch-tft-lcd-module-800x480-display-controller-i2c-serial-spi

    There is a driver for Teensy by sumoty:
    ...
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    CAN FD is on CRX3 (pin 30) and CTX3 (pin 31)...

    CAN FD is on CRX3 (pin 30) and CTX3 (pin 31) only.

    You can't use pin 13 and 22 for CAN FD.
  42. Thanks for the code mjs513. It almost work. I...

    Thanks for the code mjs513.

    It almost work. I can get a good image on the PC but on the LCD the image looks corrupted. I think some setting is not quite right.

    18145
  43. Any example code for Teensy 4.0 with ArduCAM Mini to drive an ILI9341 LCD ?

    I've got an ArduCAM Mini OV2640 working with Teensy 4.0 thanks to mjs513

    https://github.com/mjs513/WIP/tree/master/ArduCAM_t4

    It can connect to a PC host and capture images.

    Is there any...
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    Help needed with RA8875 LCD on Teensy 3.6

    I'm using a 5" RA8875 LCD with a Teensy 3.6.

    The driver I'm using is the one from Sumotoy v0.70

    I'm trying to display a bitmap image but it looks like something is corrupted.

    I followed the...
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    For CAN FD you need to use CRX3 and CTX4. That...

    For CAN FD you need to use CRX3 and CTX4. That is the pins on the back side of the Teensy board.

    CRX1/CTX1 or CRX2/CTX2 is CAN2.0B not FD.

    You would need two 120R terminating resistors in your...
  46. I would use a scope and check the 5v supply on...

    I would use a scope and check the 5v supply on the USB to the Teensy. Check if it drops below 5v when you energise the solenoid.

    Also the depends on the size of the solenoid, your SSR might not be...
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    45W is high power. You would need good shielding...

    45W is high power. You would need good shielding everywhere !!
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    What is the RF power output of the radio ? Can...

    What is the RF power output of the radio ?

    Can you post a photo of the setup.
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    msg use in transmit function. rxmsg use in...

    msg use in transmit function.

    rxmsg use in receive function.
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    On short cable run, it is working at...

    On short cable run, it is working at 1000/8000kbps is well.

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