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Questions tagged [teensy]

A small USB-based SBC with an AVR or ARM microcontroller

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0answers
25 views

Using an MCP23017 port expander with momentary and toggle switches

I have a Teensy 3.2 connected to and MCP23017, running the Adafruit MCP23017 library. This is setup on a breadboard to simulate being connected to a home-made pinball game. GPA0,1 and 2 connected to ...
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0answers
51 views

PWM output with Teensy 32. Atmega32u4 failing when printing values to terminal

I am implementing PID control and have developed code that reads analog potentiometer inputs, converts it to discrete counts, and outputs a PWM response to a DC motor based on the angular displacement ...
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1answer
103 views

How can I use a Teensy for a CAN bus project? [closed]

I have to use CAN Bus in my project. I need to use the Arduino software and a Teensy but I don't know what parts I should buy or how to make it work. I have chosen Teensy 3.2 With CAN-Bus Breakout ...
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0answers
101 views

Why did my Teensy 3.6 break?

My battery-powered circuit is supposed to collect data from some sensors using a Teensy 3.6. It worked for a few days (maybe 1hr total of uptime) and then something broke. All of the sensors and power ...
-1
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1answer
122 views

Voice encryption over TRRS headphones

-- Edit 2 --- This question is different from Connect STM32 BLUEPILL to the TRRS connector on the computer But just in case for not falling into double posting I deleted that post. (This post hes ...
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2answers
106 views

Deal with DC offset

I have STM32 BluePill and Teensy 3.2 , they both read analog 0 < x < 3.3V. I want to read earphone microphone sound but the mic produce +-2.5V (with ~200mA, but this is a different problem). ...
0
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1answer
61 views

Drive 10 piezo buzzer from micro controler simultaneously and independently

I'm looking for a solution to drive simultaneously 10 piezo buzzer from teensy. I'm aware about the limitations of the number of internal timers so I'm looking for an external chip that would enable ...
0
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2answers
624 views

What PWM inputs are needed to drive a 3 phase BLDC using the HIP4086 IC driver chip?

I am building a motor controller for a BLDC (w/ Hall sensors) using a Teensy. My circuit looks like the typical application diagram in the datasheet (https://www.intersil.com/content/dam/Intersil/...
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0answers
127 views

Measure relative position between two IMUs

I'm trying to create a system where I need to measure the relative orientation of the edge of the arm with respect to its base: The apparatus will be like in the diagram above. To measure the ...
1
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0answers
335 views

Can anyone help me get this running? (ILI9806E TFT on a teensy 3.5)

I am at one of those points where I just can't seem to see the forest for the trees. My previous experience with TFTs has been pretty much 'plug and play' using adafruit's breakout board kit and ...
0
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1answer
58 views

Teensy audio alternative [closed]

Can anyone recommend some alternatives to the teensy with capabilities to play multiple audio files. I have a electronics project with a interactive game it is currently using a couple of button ...
0
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1answer
74 views

Right way to connect leds to light up when pressing buttons

I want to connect leds to Cherry MX switches (push switches) so they light up when I press them. I have 6 switches each connected to a different pin of a teensy 2, basically like this: The diodes ...
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3answers
135 views

Want to output data on GPIOs in parallel, what is the delay between each pin?

I have the following setup to control 256 bi-polar stepper motors from a data stream via SPI. I'm deciding between an MCU (teensy 3.6) or an FPGA. Each motor (four wire) is driven by a driver that ...
0
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1answer
86 views

How to replace Momentary & Maintained switch with Teensy?

I've got a LCD driver board (with some push buttons to open menu/+/-) and a bi-directional HDMI switch (with a latch button to redirect HDMI output to one or another) where I want to remove those ...
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3answers
141 views

Converting a push on/push off SPDT switch into a toggle

I'm working on a small electronics project: trying to convert a guitar footswitch into a push-to-talk foot pedal. At my disposal, I've got a Teensy acting as the actual HID device (to be connected to ...
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1answer
65 views

Protecting handmade electronics from accidental water spillings [closed]

Keep in mind that I dont know the least about electronics. I have soldered and used some arduinos before, but that is it. I am preparing to make a mechanical keyboard (or handwire like they say on /r/...
1
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1answer
152 views

Implement rotary switch, toggle switch and potentiometers with Arduino to simulate keyboard press

I am making a controller for my child; to be used in a video game on PC. I did get a 11 position rotary switch, few toggle switch and a couple of potentiometers. Now, I did check few tutorials and I ...
0
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1answer
163 views

3.3V @ 10mA to 5V @ 50-60mA [closed]

I'm trying to drive this JBtek 4 Channel DC 5V Relay with a signal originating from a teensy 3.6. This means I somehow need to turn 3.3V @ 10 mA to 5V @ 60mA. I have a high wattage 5VDC PSU I would ...
0
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1answer
157 views

How to handle 2nd USB and Audio ground in a project powered from isolated 5V Wall Wart

I've read a dozen questions that are similar to mine, but have not found any responses that provides the specific guidance I am seeking. Here are some that I've read: Ground Connection When Using ...
0
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1answer
2k views

Maximum SPI speed of TFT display

I have a 1.8" TFT color display from Banggood. It's very nice with the vivid colors. However, the screen refresh is slow. I'm limited by the SPI speed of 1 MHz. It results in an update rate of: ...
-1
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1answer
263 views

N channel MOSFET controlled using teensy 3.6 gpio [closed]

I'm trying to drive some LEDs from the 3.3v located on my teensy 3.6 device (a microcontroller) using an n channel MOSFET. I cannot drive this directly from the gpios ports due to the current being ...
0
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1answer
376 views

Feedback sought on audio output circuit for Teensy 3.2

I'm stepping up my Teensy carrier board game, and adding a header to output the DAC0/DAC1 signals. I haven't done analog anything for about 25 years, but here goes :-) This circuit goes on a carrier ...
0
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1answer
609 views

Teensy as USB host

Can Teensy 3.2 \ 3.1 be used as USB host device without additional shields in order to control some other USB device?
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1answer
115 views

Multi voltage power source and negative dc line

I'm working on an audio project with a Teensy board. The teensy itself is powered by 3.3v, but I want to use balanced audio in/out module that both need a negative voltage rail and a higher voltage ...
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0answers
475 views

Teensy 3.2 Comparator

I am trying to create a comparator on the Teensy 3.2 to convert an IR receiving diode signal from analog to digital. Currently I am using an op amp, but that takes extra space and extra power, both of ...
1
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1answer
458 views

MPU9255: Unreliable AK8963 Communications

I'm currently trying to communicate with the InvenSense MPU9255 9-Axis IMU using the FreeIMU software on a Teensy3.2. See comment below for link to FreeIMU code being used (don't have enough ...
0
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1answer
322 views

Teensy 3.2 receives garbage values from HM-11 BLE module

Recently purchased an Hm-11 BLE module, and connected it to a Teensy 3.2. I can see the BLE module (AnyFlite) on my phone using the MSMBle app. The following code was used to initialize it: ...
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1answer
79 views

What chips does a Sony Ericsson (feature phone) use? (e.g. K510i, K610i, W705, C510) [closed]

I'm trying to replicate the behavior of these awesome Sony Ericsson phones by using Teensy 3.6 so I'm wondering what kind of specifications and chips do these phones have. The phones in question are: ...
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2answers
640 views

Hooking up LCD without potentiometer

I'm hooking up an LCD to my Teensy 3.2. All the connections are correct, except I had the contrast pin going to ground. This results in the screen being filled with square blocks. If I tilt the ...
0
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1answer
116 views

Trouble wiring a GDM1601 LCD to Teensy

I have the following LCD: http://www.xmocular.com/Upload/CMpdf/GDM1601C-01010742776.pdf I am trying to hook this up to my Teensy. I assume that because it has 16 pins that it's a HD44780 display. Am ...
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1answer
746 views

Teensy-LC 5v Pin?

I want to connect a sensor (QRD1114 - requires 5v) to a Teensy-LC. I am a little confused as to which pin to use for 5v input. Below image shows how the sensor is connected to an Arduino UNO (right-...
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3answers
325 views

No output from shift register

I'm trying to use a Teensy 3.2 to control a digital scoreboard display. I'm using 6 common anode 7-seg displays controlled by two 74HC595 shift registers daisy chained to control a transistor array. (...
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3answers
269 views

Problem with reading values from an analog accelorometer

I have a Teensy 3.2 MCU (datasheet) hooked up to an ADXL326 analog accelorometer breakout board (datasheet). Visual examination of the board reveals a few SMD capacitors, which are 0.1uF. I have ...
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2answers
918 views

Use Teensy 3.2 in breadboard without soldering

I bought a Teensy 3.2 board, and the package included some headers: I want to use the Teensy in a breadboard, and so I plugged in the headers and put the entire thing in my breadboard: The little ...
11
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4answers
2k views

Options for soldering a through hole PCB (e.g. Teensy) flush/flat on another PCB

I am looking to incorporate a Teensy board on my PCB. I want to solder the Teensy PCB onto my PCB. But I also want to minimize the height above my PCB as much as possible. Hence, I DO NOT want to ...
3
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1answer
208 views

M2716 EPROM TTL Data Output Waveform Problems

[Adding followups to the bottom of the question] Compare sample rates from logic probe. Faulty breadboard (2 address bus pins not connecting); rebuilding on protoboard with short bus wires soldered ...
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0answers
354 views

24 Stepper Motor Parallel Array

Would it be possible to driver a 24 bipolar stepper motor array in parallel with a single driver? The stepper motors are 8mm in width and draw 4-5 volts. In terms of design consideration, is there an ...
1
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0answers
116 views

MQTT subscription issue: The length of my received packet is always 19 characters

This is my first post here so bear with me if I accidentally didn't follow conventional standards here. Here's the issue: I am using a teensy 3.2 and WINC1500 wifi breakout to play around with MQTT ...
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1answer
50 views

Pluggable Cable for multiple analog connections

I have a device which comes in two parts; a microcontroller sits in one part; both parts have a matrix of wires; accordingly, I need to cycle power through several cables while reading the current/...
2
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3answers
372 views

Regarding CPU speed required for USB applications

I am working on a project for developing a USB keyboard, and I am new to USB protocol and I did initial study regarding basics of data transmissions through USB. I am now checking for USB supported ...
1
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2answers
615 views

How much current will I get from the 5V rail of a Teensy 3.2 powered over USB? [duplicate]

The microcontroller in question is a Teensy 3.2. My understanding is that the most current that you can get from a standard computer USB port is ~180mA; how much of that will current devices attached ...
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2answers
2k views

Is it possible to program the Teensy3.0/3.1/3.2 in C?

I need to program my Teensy3.2 (hasn't arrived yet) in C. Looking at the Teensy pinouts page, the last board for which pinouts for C language are given is the Teensy++ 2.0. Is it still possible to ...
1
vote
1answer
604 views

Teensy 3.1 PWM, TIP31C, and LED strips

So I have been having some trouble with my Teensy and I think I have an idea of what it is but I need some help understanding it . So I have four 12v RGB led strips. Each color pulls close to an amp ...
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1answer
839 views

Teensy++ 2.0: How to get a PWM output from pins OC2A & OC2B

I'm doing a project that requires a lot of PWM's and I've gotten 6 of the 9 PWM capable pins to work, but I'm struggling to get the last 3 running. To get the OC1A-C Pins running a PWM, I did this: <...
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0answers
1k views

Programming the MK20DX256VLH7 with Arduino IDE

I want to start using the MK20DX256VLH7 in my projects. This is going to be my first 32bit microcontroller. I love the simplicity of the Arduino IDE and I would like to keep using it with this ...
3
votes
3answers
407 views

How to change analog sensor signal to appropriate levels for microcontrollers?

I have a FUTEK CSG110 amplifier, conditioning a signal provided from a load cell, providing a -3V to 3V signal. I can change this range to my liking, however I will be stuck with a +- voltage ...
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1answer
160 views

Switch between voltages

i already posted a similar question before and i still don't know exactly how to wire up things. I will try to explain better. I have a pc power supply and a pc fan that works between 5v and 12v. All ...
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1answer
1k views

old ibm trackpoint pin scheme

I have a trackpoint from a thinkpad keyboard with a trackpoint mounting a PTPM754DR microcontroller, what I'm trying to do is to find the usage of various pin on the trackpoint board and connect them ...
1
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1answer
163 views

Tubular Solenoids and Arduino

I am interested in using this Tubular Solenoid at 3 DC voltage to operate in Continuous (100%) Duty Cycle. According to the specifications the solenoid can operate at a: Continuous (100%) Duty ...
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1answer
153 views

Reflectance Sensor Input Issue

I have a Teensy 3.1 and I am wanting to receive data from a reflectance sensor, specifically this one from pololu: https://www.pololu.com/product/2459 ! This is the circuit of the reflectance sensor ...