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Questions tagged [teensy]

Teensy is a cheap and powerful development board with some Arduino compatibility.

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1answer
877 views

Talking to ADS8698 (18-bit ADC) over SPI

I want to talk to an ADS8698 over SPI (see page 36 for details on their SPI implementation) using a Teensy 3.2. Right now I'm only getting zeros back and I feel like (perhaps wrongly) that I've ...
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2answers
1k views

SIM800L module just repeating data sent via serial

I've got a Teensy 2.0 with simple AltSoftSerial as displayed on image: As you can see, when I send a command (or any other input via serial) the SIM800L module sends me the same input. I tried to ...
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2answers
209 views

neopixel not blinking

I have some neopixels, and I have one hooked up to my teensy. I want to have the color change, when the push button is pressed vs not pressed. The LED will change colour when I upload the code, if I ...
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2answers
511 views

From Wiring to pure C

I'm using the Teensy 2.0 (atmega32u4) and decided to switch from Arduino IDE with Wiring to pure C. I think it's much more useful to master programming microcontrollers on that level. Wiring seems to ...
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1answer
545 views

Connecting external mic to the Teensy

I have a Teensy 3.2 and the Teensy audio board. I was going to connect lavalier microphone to its audio jack but learned that it's only for output. There are line-in pins though (see "Back Side" ...
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1answer
152 views

can teensy 3.0 or above run fingerprint scanner fps gt-511c1r?

I have an fps gt-511c1r fingerprint sensor module. I want to know whether i can run it using teensy 3.0 or above? I have tried it successfully using arduino uno. EDIT: I have uploaded the fps blink ...
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1answer
793 views

How to transmit serial data from laptop USB out to Teensy?

I want to send serial data from my laptop to a Teensy LC chip through the laptop's USB port. I am not sure how to do this. From reading I have found two possibilities, which both seem to have problems:...
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1answer
158 views

Strange RPM Readings on Teensy 3.2

While trying to read RPM from a computer fan using the 4-wire protocol, I am getting strange readings. +12 and GND from the fan are connected to a power supply, and the tachometer to the PIN-0 or a ...
2
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1answer
256 views

Overwritten EEPROM

I have a problem with the Teensy, its EEPROM and another Array. My program contains two Arrays, the first one is a 128x4 long Array, the other one a 2560x2 double Array. The first Array is meant to ...
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0answers
69 views

Program does not seem to be passing from setup to loop, or printing to SD card

I am trying to write code to test servo motors using an encoder. I create a file in the setup part, and then set 1500 microseconds to 0 for the encoder. However, if I try to print something to the SD ...
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2answers
80 views

teensy as a keybooard throws error as keyboard input

I have a program (bash script) I wrote that is for stop motion animation. The script works perfectly, when I use any given keyboard on my laptop, and it works on other computers, as well. So i wanted ...
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0answers
170 views

arduino teensy no true HI-Z available?

I am using this https://github.com/watterott/SilentStepStick stepper driver to drive a stepper motor. I am having trouble setting pins to HI-Z/floating to configure the stepper driver. To set the ...
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2answers
356 views

Arduino Uno (or Teensy 3.2) programmatically powering an external USB connection

I'd like to create a process to programmatically turn-on/activate a separate USB device connected to my computer...Thinking another way to state the problem, I want the Arduino to complete the USB ...
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1answer
5k views

How do I give the ENTER keypress?

I have a Teensy set up as a keyboard, joystick, and I'm giving keyboard commands. Letter and number keys are going fine. But when I try sending ENTER, I get some extra code in my Linux terminal: $ ...
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3answers
849 views

What are the consequences of different clock speeds on different boards?

I am a programming amateur, arduino noob, trying to decide which board will be better for my project. I need a small board. I am trying to decide between the Teensy 3.2 and the RFduino. I want to have ...
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1answer
435 views

Shared Memory using SHM Library

I am trying to read sensor data from a FIFO buffer embedded in the sensor (LSM9DS1), and store that data on a Teensy 3.2 board to later be put in a file. I can only read 6 bytes at a time from the ...
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0answers
219 views

Is it possible to run the Teensy to the Arduino?

I'm already done copying/pasting the libraries that I know is needed to run the program, but I wonder why I always get this error every time I tried to run the code. What do you think would be the ...
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0answers
125 views

Change device Function Summary for Teensy-LC

I found this thread here which describes procedure to change the produce-name of Teensy However when we open device properties we see 'Teensy USB Serial (COM xx) in the Device function summary. ...
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1answer
244 views

Is Teensy compatible with the Arduino keyboard library?

I am thinking about buying some Teensy micro-controllers, but I want to know if the teensy are compatible with the arduino keyboard library.
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1answer
386 views

Use command line to upload hex code to teensy.ex

I need a command line implementation for uploading code to Teensy-LC through Windows 8.1 operating system I know Paul has not released support for command line for Teensy-LC yet but i would like to ...
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2answers
2k views

Use command line to upload program through hex file to Teensy-LC

I want to make a standalone programmer for Teensy-LC in windows 8.1. So basically I have provided the board to a client of mine and now I want to change the program loaded into the Teensy-LC board. ...
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4answers
1k views

Take an Arduino or Teensy prototype to Mass production - Loading software onto microcontroller

I am developing an educational product that I would like to mass produce. I am not sure of the quantity yet, but I imagine we will make a few hundred PCBs at least to begin I spoke with an electrical ...
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2answers
371 views

Delay function broken?

I noticed timing inconsistencies in my project, and further debugging pinpointed it to the problem below. The text should be updating every second, but the returned values are >> 1000ms. To clarify, ...
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1answer
619 views

How much power can the Teensy 3.2 deliver to external components?

Can a teensy 3.2 deliver enough power to properly activate multiple servos by chance?
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0answers
509 views

Teensy 2.0++ SDA SCL pins not accesible using ARDUINO software

Hi I was looking to interface Teensy++ 2.0 with MPU6050 for a simple IMU project. I have done this previously using Teensy 3.1 by trying the project of kriswiner however I also wanted to try it out on ...
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3answers
1k views

Is it possible to create a standalone exe which can burn the code into a Teensy 3.1?

So here's the scenario. I have sent my teensy 3.1 circuit to a client of mine And now I need to update the code burned onto teensy without providing client access to the code So is it possible to ...
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1answer
588 views

glediator + PL9823 (WS2812B) + teensy = fail?

here is what I got: teensy++ 2.0 with code below Glediator configured for Glediator_Protocol/Single_Pixels/HL_TL/RGB/B_1000000 led matrix with the PL9823 leds (80 of them) I first off have to set ...
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1answer
2k views

Migrating from ATMega2560 to ARM based — Teensy vs Due?

I currently have a project that is working on an AtMega2560 platform (heavily derived off the Arduino Mega). It mainly involves a GPS module and SD card. Going forward I am looking to add a few more ...
3
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1answer
632 views

Teensy MIDI Show Control

I'd like to use my Teensy 3.1 to send MIDI Show Control messages using USB MIDI in order to control an ETC Nomad system. These are different from standard NoteOn, NoteOff, ProgramChange, etc. commands,...
2
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1answer
728 views

Arduino sending keystrokes via push-buttons. Proper bouncing and manually setting buttons?

I have a simple set of 8 push buttons wired to a Teensy 3.2 board (which uses Arduino via Teensyduino plugin). The 8 buttons are on pins 1-8 and their common ground line (one line soldered to each of ...
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2answers
2k views

How to simulate delay() to debounce mechanical button using millis()?

Im trying to use the millis() function as a replacement for the delay() function in order to debounce a mechanical button. This is for an electric drum kit I am building. Im using a teensy Arduino to ...
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0answers
101 views

Teensy and MS5803 sensor

I'm trying to use the MS5803 pressure sensor with a Teensy 3.2. Compiling the Sparkfun, or other, libraries, however, results in no output. Can you provide guidance on how to modify the libraries to ...
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1answer
609 views

Arduino keypad matrix example? ( teensyduino )

I'm a beginner using Arduino with a Teensy 3.2 board and programming it as a usb keyboard. I have two 4 button membrane switches. Their button contacts are on pins 1-8, and the 9th pin holds a ...
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0answers
641 views

Raspberry Pi, Teensy and Arduino's on i2c

I just got into an interesting mess. I have 3 Arduino's (Pro Mini's) and 2x Teensy's (3.1's) connected via I2C to a Raspberry Pi Master. The 2x Teensy's I2C data lines are connected via OctoBoards ...
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3answers
925 views

How can I enable the security bit of a teensy board?

I want to prevent someone from connecting an arduino device to a computer and downloading the code (yes, the hex-dump code) because I want to embed a wifi password inside a device that should be kept ...
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1answer
235 views

Is it possible to create an interface between Teensy 3.2 and a DSP?

I realize that this is a forum for Arduino but since the Teensy 3.2 is compatible with the Arduino IDE I thought it would be appropriate to ask the question here. Anyway, can I create an interface ...
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1answer
418 views

Why does my analogRead work on Teensy but not Arduino Uno?

I have successfully made a voltage measurement circuit on my Teensy 3.1 that reads a voltage coming out of digital pin 0 set high and coming back into an analog pin A0 to read voltage. Basically: ...
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1answer
371 views

Unexpected output form Serial.println

So I have a teensy and an arduino uno connected together via I2C, however some very odd behavior is occurring, when monitoring the serial connection for shorter data sent over I2C I receive the ...
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3answers
407 views

Pass Several Values to Library

Unfortunately I have yet to learn C++ though I have experience with C# and other non-C languages. After trying for the past 5 hours to pick up what I can from Stack and other sites I haven't found a ...
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1answer
444 views

Teensy: SPI and Pressure Sensor

I'm first time working with a Teensy 3.1. I have to connect this (MS5803-01BA: http://www.amsys.de/products/ms5803.htm) pressure sensor via SPI to my Teensy. My problem is, that I don't have any ...
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1answer
803 views

PIR motion sensor stuck in a loop

I've bought an HC-SR501-compliant PIR motion sensor (like this one) and connected it to a Teensy 3.1. The circuit seems fine, and the LED lights up. However, when nothing is moving in front of it, the ...
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1answer
141 views

Arduino IDE / Teensy 3 on Ipad

Does anyone know a good IDE for Ipad to write Arduino code and compile it for teensy 3 ? Answers with different alternatives would be appreciated
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0answers
359 views

Trying to play audio files on arduino via Usb Host Shield

I want to build a program that will seek audio file inside a USB DOK (DisK On Key/Pen Drive) when it is inserted to the Circuits@Home USB Host shield. After a specified file will be found i want it to ...
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0answers
36 views

Having trouble bootloading my Two-Up printer

I am following these instructions to set up my Two-Up 3D printer, and I have no problems all the way up until step 18. The board uses the arduino IDE to burn the bootloader, which is why I am posting ...
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0answers
104 views

Arduino 1.6.1 IDE with Teensyduino Serial port lag issue?

OS: Ubuntu 14.04 Board: Teensy 3.1 and Arduino UNO I've ran many tests and concluded that the issue is within the Arduino IDE itself. The issue: Instead of a smooth stream of data displaying from ...
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3answers
737 views

How big of a difference is there between an Arduino Uno and the rest?

Lately I've been fooling around with a project for my Microsoft Sidewinder Force Feedback Pro Joystick. I've found out that there is a project currently for it built for the Teensy 2.0. On the page ...
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1answer
614 views

Throughput and BER test with nRF24L01+ radio and Teensy microcontroller

I am trying to modify the example given in the this page to a basic throughput and BER test with two nRF24L01+ and Teensy 3.0 modules. I want to modify the nrf24l01_send_string example in a way that ...
2
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1answer
394 views

Get USB host controller serial number or ID using Teensy or other HID devices

I have a Teensy board and would like to know if there's a way to get a serial number (or any other kind of ID that is preferably unique) of the host controller that I plug my Teensy into. E.g. can I ...
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1answer
63 views

Maxbotixs LV-EZ4 analog read question

I am using an external 5 volt power supply to power my Sonar, and I am using a Teensy 3.1 to read in analog signal from the sonar. my question is since the teensy is only 3.3v tolerant with analog ...
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1answer
1k views

Teensy 3.1 no overclock option for 168 MHz

I'm sorry if this isn't the right area. Teensy uses the arduino ide. I've seen some people show off the 144 mhz and 168 mhz option in their ide. I read in the Teensyduino 1.19 release notes that the ...