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I beleive Paul wrote the digitalWriteFast library into the Teensy xx DigitalWrite command. This is one reason why the Teensy's are faster than the standard Arduino. Just change your DigitalWriteFast into DigitalWrite commands. Tim

I did a Google search on WTV020-SD-16 and here is an Arduino link and code. How you can tell if it will work with the ARM coded Teensy 3.0 (at least with the custom Libraries and maybe headers: #include <Wtv020sd16p.h>) is to place the code in the Arduino IDE and click on the VERIFY button to...

t3andy, Its been a while since I have done any C related programming as I'm trying to get back into it again with the Teensyduino software for the Teensy 2++. Can you tell me if there is any way to edit the library cpp as I tried it in Notepad and it was all wrapped together. Anything simple...

I tried to look up on the datasheet about the 400 KHz speed and not much was listed. What benefits does it provide you? What file do I change in the library default setting (Teensy 2++) if you can tell me? Thanks, Tim

There is always the Radio Shack matching Printing Circuit Board (PCB). It has the same footprint and layout at their solderless breadboard. Develop on a solderless breadboard and then transfer over to the solderable PCB...

t3andy, You mention finding the proper library is the key and not to use the same library on the Teensy 3. We'll I have gone back to the Teensy 2++ as my Teensy 3 got damaged from soldering. What library are you refering to on this? Just so that we are on the same page. Thanks, Tim

What I found out is these somewhat thin (28 gauge?) wires from adafruit (http://www.adafruit.com/products/153) don't always keep good contact with solderless breadboards creating intermittant contact. I found that using 22 gauge wire from radio shack holds a better contact and solved my problem...

I didn't see a # button on the toolbar until now when I clicked on 'Advanced' at the bottom: // DS1307_Serial_Easy (C)2010 Henning Karlsen // Modified slightly for Teensy 2++ by Tim Gilmore // // web: http://www.henningkarlsen.com/electronics // // A quick demo of how to use my...

It says on the C Language pinout that pins 0 and 1 are SCL and SDA. The Arduino language pinout does not list SCL and SDA. However pins 42 (A4) and pins 43 (A5) work for the ChronoDot and intermitantly for the DS1307. I am using 4.7K resistors on the DS1307 circuit and CR2032 battery. On the...

Has anyone used this ChronoDot with the Teensy 2++ (Teensyduino software)? http://www.adafruit.com/products/255 http://docs.macetech.com/doku.php/chronodot I connected: ChronoDot GND to pin Teensy 2++ (GND) ChronoDot VCC to pin Teensy 2++ (+5V) ChronoDot SCL to pin Teensy 2++ (pin 0) I Didn't...

Cool. I received my Teensy2++ today and soldered on the pins no problem. I removed the Windows beta 8 and reinstalled Arduino 1.0.2 and the Teensyduino 1.10. All looks good with no trace of Teensy 3.0. I tested the Blink example and all is good! Going forward!

I lifted up SMT parts when trying to solder in a RTC crystal and battery case. I dont have the materials to fix this so I threw it out as it wasn't an expensive loss. Since Teensy 3 (ARM) doesn't support the Adafruit 16x32 RGB display, I'm going with the Teensy 2++ (Atmel) as I know this is...

I can verify the RGBmatrixPanel.cpp library demo programs when selecting Teensy 2++ using Teensyduino Windows beta 8 so since it doesn't appear anything will happen for a while if at all with this library and teensy 3.0, I am going with the Teensy 2++ for the Adafruit 16x32 RGB LED matrix.

I bought a bunch of CR2032 batteries, cases, crystals and even some DS1307 chips for like $10 including shipping from Dipmicro. Thanks!

I see they have 3 volt CR2032 batteries too cheap. Thanks!

Paul, Do you think the RGBmatrixPanel.cpp library would work with a Teensy 2.0++ instead then? I know it doesn't have the speed as the Teensy 3.0 ARM processor, but I had used a previous Teensy 2.0++ with a different RG LED matrix display to control 8 of them (as shown here...

I am interested in learning more about the RTC for the Teensy 3.0. I understand I would need a coin cell battery, case and 32.768 KHz crystal. When might these be available through PJRC or Adafruit maybe? Is the Teensy 3.0 RTC tutorial with Teensyarduino what I should be looking at for this?

Thanks Paul for whatever (if any) support you can provide for this. I have sent PaintYourDragon this message: Hello, I am not a programmer but have seen the wonderful work you have done with the Arduino and the Adafruit RGB matrix displays. I have been looking for a way to connect multiple...

Modifying a Cpp libray file to work with Teensy 3? What is involved in modifying the library file? From this site: https://github.com/adafruit/RGB-matrix-Panel Who would be best capable of doing this anyone, PaintYourDragon (writer of the RGBmatrixPanel.Cpp) or Paul (writer of TeensyArduino)...

Teensy 3 not compatible with 16x32 RGB Matrix library? Yes thats the one. But I think theres a bigger problem. I also have a nootropic RGB backpack and it works well with the 16x32 display. It is basically a 328 Arduino on a custom PCB. http://adafruit.com/products/1072 I am trying to...

I have a 16x32 RGB Matrix Display I bought at Adafruit and recently bought a Teensy 3.0. I used to have a Teensy 2++ a while back but was lost in my recent move. Its been a while since I have done any Arduino programming. I would like to convert the display to work with a Teensy 3.0 for speed...

Nantonos, Thanks for your insight on this! I did see an additional TX1 (faded out) on Digital pin 5 but it did not work like pin 1. Is this the additonal Serial (or Serial0) that you refered about? However, I the code working on all 3 serial ports (TX) to the 5vdc serial Parallax LCD. Is...

Thanks Pete and Paul! So the rule of thumb is: For the Teensy 3.0 "3v3 outputs" (ie DIGITAL-DigitalWrite; PULSE WIDTH MOD-analogWrite; SERIAL-Serial1 (TX1), Serial2 (TX2), Serial3 (TX3); I2C-SDA?, SCL?; SPI-DOUT), I need to just connect a wire between them and the 5vdc input device (ie Serial...

Thanks Pete. I got it to work after doing what you said: //const int TxPin = 8; //#include <SoftwareSerial.h> //SoftwareSerial Serial3 = SoftwareSerial(255, TxPin); void setup() { //pinMode(TxPin, OUTPUT); //digitalWrite(TxPin, HIGH); Serial3.begin(9600); delay(100)...

How do I use the Teensy3 with the Parallax serial LCD? I tried following the Arduino code at the bottom of this link and there was errors using SoftwareSerial: http://learn.parallax.com/KickStart/27977 I connected Vin and GND and pin 6. Should I be using the hardware UART instead of this...

Thanks JBeale! That worked. I'm up and running on Teensyduino 1.10 and Arduino Teensy 3 - Beta 7 on Windows 8. Time to run through the tutorials this weekend. Thanks again, Tim

Windows 8 with Teensy3 (not seeing Arduino program from Teensyduino software) OK thanks I just wanted to be sure about the 3 v. However, I now have a more serious issue. I installed the Teensy 3 beta 6 software for Teensy 3. I have a new Windows 8 laptop I'm using this on. I ran the...

I received my Teensy 3 today with the Teensyduino Tutorial kit. Surprisingly I got a breadboard too with my order so that was nice. I used to have a Teensy 2++ a year or so back but lost all my micro-controller stuff in a move to Michigan this year. I have never worked with 3v inputs and...