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Fadeall and initpixelfunctions are calls to functions that are defined elsewhere in my code. Sorry I hadn't noticed that. You can delete them from your code and it should compile and run. Fingers crossed!

From what I read a uln2803A seems as easy as it gets? On the other hand, most modules that I found need 5V.

The pca and nano that blew up was connected by pins/sockets/circuit board with solder tracks I make.. (what u call that) so I’m guessing gnd connection on solder pad or socket or something was crook. I suppose the...

Thanks guys! It looks like everything works now. Got power into the correct pin and cut the trace. -jim lee

So it seems you've had grounding issues with the boards. I couldn't understand why the PCA would blow your arduino. It seems your setup is far more complicated than your initial post hinted to.

JW I have no pics of the way it was wired for test sorry. I only have my own recollection which I wouldn’t expect you to rely on or me really.. Last night I was a bit more observant but the setup now has another...

The following changes to keyboard.cpp solved my problem with the mouse not working and the repeating Keyboard Control Callback. It works with all four of my Logitech wireless keyboard/mouse combo's. I changed line...

I should have re-connected to take a photo. It is all on pcb and glued in position with just a socket for nano and owm board. Interestingly last night I added some rotary encoders and used pwm pins as an easy point...

Yeah I edited the note but didn’t re-do the image

Incredible. Thanks so much. I modified your code with my various animation functions and I KNOW IM CLOSE, but I get errors when compiling at fadeall(); was not declared in this scope and InitPixelStates(); was...

Wanting to know when GPS signal transmission started I put an _isr on the Rx line to capture message start bit. There was a lot of other code running calcs and the time to process/receive the first GPS byte was...

Paul, it was that thread that prompted me to run the test I did today. I do want to repeat the test using digitalWriteFast; I'm curious about the pin speed on my "big gun" as well. At the moment the 3.6 is in a...

Oh, I'm really curious to see how the waveforms really look when measured with 500 MHz bandwidth! Here's an old thread with the best I could do having only a 200 MHz scope. ...

That's in the plan, but I didn't have time to hook up my 500 MHz scope. The times posted were measured using the Analog Duscovery 2 which is hooked up for day to day stuff

The code can overclock F_BUS to 128MHz, too, so in some cases this will give a good speed-improvement too (I'm not 100% sure, but not in the GPIO-case , I think) This needs a special setting. Good night :) (00:18 here)

Now try with digitalWriteFast(); and be still more amazed...

Studio shot of image on laptop and image on led panel.

That's the reason why, in cases like this, photos are way better..

Others who are interested might want to look here, for example: https://github.com/PaulStoffregen/Audio/blob/master/output_dac.cpp

I'm not that good with hardware/electronics, too, but I've used the unl2803 many (>10??) years ago for a small motor, so yes, I think it can handle a fan. On the other hand, It would be easier to use a motordriver....

you're right, transmit_previous_timeout gets never reset to 0 would be good to fix that and do a pullrequest @ github https://github.com/PaulStoffregen/cores/blob/master/teensy3/usb_keyboard.c#L495

I've in essence just done something very similar for my christmas tree lights project. I have 150 WS2812 LEDs being controlled by a Teensy 3.5, using the FastLED library. I have one button used to cycle through the...

Never mind, I guess I'm just bad at google. Found some useful stuff inside the Audio library. Cheers :)

who would have thought that? :rolleyes: you have a pretty exact timing with the first byte received. you know the bitrate and protocol (8N1?) - it's doable to substract the time needed for the transmission, so you...

Pete

Perfect thanks! I will order some right now.

I have a funny/disappointing update: LightWare, the company that makes the laser I'm using has been having some growing pains due to exploding demand, apparently. The model of laser I received had been upgraded but the...

I ran your sketch with pin 2 jumpered to pin 23 and do a count++ in the ISR and print count in loop with delay(1000); attachInterrupt with LOW, hangs. With FALLING, I get 488 PWM counts/sec. so use FALLING -- though...

Ah, now we can see the real problem. Looks like at some point you installed a copy of Servo in your Documents\Arduino\libraries folder. When you do this, your installed library always overrides any others with...

Yeah, on Teensy 3.6 you just use the 2nd port as USB host. All you need to do is solder a 5 pin header to those holes and connect a USB cable. But DO NOT add resistors. It's meant to connect directly using...

Thanks! That's all? Direct DP and DM through 33 ohm resistors to a host connector? Is anyone here using any more protection to the slave device connection? From schematics I can see there isn't any other than the 33 ohm...

I may be wrong, but looking at the data sheet, it looks like the sync signal only goes down to 2volts, so maybe it is not showing as a low signal. You might try something like a voltage divider or something to drop the...

The T 3.6 has 2 USB ports. One (USB0) is slow (12MB/s) and (actually) device only without host support. The second (USB1) is quick (480MB/s, IIRC) and accessible through the additional holes near pins 1 to 6 (see...

That looks interesting and promising. I looked at it briefly to get the interrupt on completion to fire and failed to see it before moving on. The other thing I was looking at was registering a threshold for each pin...

Fantastic. So all I was really missing was that to use the other interface I needed to use Wire1.X and not Wire.X.

GremlinWrangler, I actually hooked up the serial RX line to the sync pin to see if the interrupt is working. It is. Frank B, the signal is needed because I need an accurate time to compute the position of the target...

If you ever noticed the few second delay in UI response when changing the Board - it seems to me that the IDE is internally parsing and updating the paths "to change the include/lib search sequence" to the selected...

Note: wire.h will automatically include wirekinetis.h for the Teensy 3.x...

I have a fresh copy of Arduino 1.8.8 on MAC with the new just released Teensy release. I did an example->servo->sweep and it compiled fine for me for T3.5... Note: if you have a copy of the servo library in your...

Thank you! That was very clear, and worked. (In fact, no need to use setSCL and setSDA in that case since those are the defaults for Wire1). I simply included wirekinetis.h rather than wire.h, and changed all calls...

I keep wondering if we should try to make it work... Not sure if we should try it with new api, or simply if scl and sad are mapped to different physical object internally use other object... I do this with my...

Okay, so I've figured out how to do asynchronous touch sensing of multiple pins, without DMA or interrupts. I learned that the Teensy 3.1/3.2 devices have a different touch sensing architecture than the Teensy LC and...

Also, I assume this was a placement error and you weren't placing 5v and gnd on the same line?

I'm concerned that on its own the pca9685 is blowing your nanos regulator without anything else connected as I'm looking to use the PCA9685 in my own projects. According to the datasheet for the PCA9685 IDD supply...

Incidentally, FYI: I compared the Arduino Servo.h file against the Teensy Servo.h file and there is a difference in the builtin timers and how they are used. So it is important that the Teensy include file be used for...

Hi ! I have a small question - what should I do to get the Jinx scanner to find Teensy Octo? Or how insert node name to an example from Arduino IDE ??

Based on your suggestions I performed the following work: Opened Arduino IDE, menu item Tools->Board set to "Arduino/Genuino UNO" Select menu item File->Examples->Servo->Sweep Press Verify button - compile...

Its not enough to change the pins with setSDA and setSCL. I2C1 is a different hardware instance than I2C0. Thus, you need to include a library like i2c_t3 which handles different hardware instances. To use pins 29 and...

Hello JWScotSat. Yes. On last attempt only PCA9685 and arduino nano connected when the last pair blew up. It ran for a little bit before smoking. Nano 5v reg is failing passing full 12v which kills everything. So...

Thanks for this! I tried this as well but without success. Is there something else that I need to do other than: #include <WireKinetis.h> ... Wire.setSCL(29); Wire.setSDA(30); Wire.begin();

My first experiences with programming were about learning assembler. C and (cough, cough) COBOL were on my plate a few years later. My interest with the ATmega328P and ATmega1284P cantered around maximizing their...

Looks like I'm in good company. I learned 6502 assembly at Penn State since they thought the 6502 was the future at the time :). I then learned Z80 on the ZX81 and returned to 6502 on the Commodore 64. In the 90's for a...

If you only connect the nano and the pca9685 together does it cause failure? According to your diagrams the nano is receiving 12V input to the Vin pin? - this is fine 5v output from nano is being used to power VCC...

Ciao, someone has ported this code for playSDWav?

Do you have a scope or logic analyzer? Try adding delay(100); in loop() so as not to overwhelm serial output. Try moving analogWrite() before attachInterrupt(), that way motor should always run. If the interrupt...

I managed to get mouse movement with the following code, but it is quite erratic. It doesn't track finger movement at all. I'm not sure what the issue is, any help would be appreciated. #include "PS2Mouse.h"...

Hm, is this signal needed ? You'll get the data over the serial interface anyway, and you need serial to do settings. Maybe the signal isn't just there, and is constant low at the moment, until you use serial.. ?

One possible test here is to add a button to your interupt pin and just make sure you can fire things with a longer press that way to confirm the code can in fact trigger, is triggering from the right pin etc.

Interesting to know it holds static some of that when single instance of IDE otherwise changes the rest, of course just sticking with Teensy fixes that issue :) To find the file path in post #2 a Ctrl+K in the IDE...

Indeed T_3.2 - corner across USB from GND is noted as : Vin (3.6 to 6.0 volts) - on the Teensy card that was hopefully included. If always powered by 5V externally - then cutting the trace allows USB to be used or...

Its a 3.2, They are all on the same ground, the trace is not cut. I'd like to program it with the USB while its running on the 5V line from the power supply. I just looked at the diagram and there is a 3..5V vin at the...

Because you still have the example you opened from the File > Examples menu when Uno was selected. That one doesn't work on Teensy. Close the Window with this example (and make sure at least one other Window is...

Odd to pick the wrong board then change - maybe the IDE confused something? What OS? What other details are in the console like the library used? I have IDE 1.88 and the TD 1.45 b2 build on my Win 10 machine and...

Also are your grounds tied together between the Teensy, NeoPixels, and power regulator?

The VIN pin is made for external power. What Teensy model? If power and USB is connected - was the underside VIN<>VUSB trace cut

Hello again KurtE, Thanks for responding to this thread. I have 4 different Logitech wireless keyboard/mouse combo's; Have tried all of these with Arduino 1.88 and Teensyduino 1.45b2 and Teensyduino 1.45. Not...

Multitasking to get rid of delay(); https://www.youtube.com/watch?v=zhWV_D_9OCY

yes, jpg/png images up to 1MB can be uploaded with insert image.

For WIRE.H There is this Teensy specific version that must link in somehow: ...\hardware\teensy\avr\libraries\Wire\WireKinetis.cpp That is where the wire:set func()'s are defined.

… The only change since 1.45-beta2 was commenting the 256 MHz overclock lines in boards.txt, as Frank B suggested. <edit>: and the cool thing is TyCommander still works