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I have several Teensy 3’s available in trade for 4.1’s. 1) 3.1 with pins 1) 3.2 with pins 1) 3.2 without 1) 3.5 with pins 1) 3.6 without 1) LC without All in original packages Also have several TallDog breakout boards (from Tinde) 1) for 3.1/3.2 assembled 1) for 3.5/3.6 assembled 1) for...

Thank you, that will get me moving off of full stop. Was not aware it was required with Teensy and I never needed it prior to now. Will do some tests on older versions. (1.8.7 & 1.44)

Arduino 1.8.9 OsX 10.11.6 Teensydunio 1.46 B10 I could not get messages in setup() to appear in the console. I reduced it down to this: void setup() { Serial.begin(9600); Serial.println("Hello from Teensy"); } void loop() {} The message will not appear in the console until I do this...

The details of the greyed out parts are detailed further down on the schematic page. Scroll down and you’ll see: A pair of pads are linked to join VUSB to VIN. For applications where external power is needed, these pads may be cut apart to isolate the board's VIN power from VUSB. A 32.768 kHz...

The code you posted cannot be what is running because mState = 8; is going to crash your program at line 210. PS: 5800ms is close enough to 5000+275+275+275 for me to start looking there...

Elementary, my dear watson... Powers of observation and the process of elimination. I had the advantage of seeing it was blue/aqua in color. Comparing it to similar devices on the board showed two others above and to the left of the missing part. Those went into the BGA array and the other ends...

The missing part is a 470 ohm resistor connected between VDDA and VREFH. One end (VREFH) is connected to the AREF header pin.

Your circuit is fine, using the 3.3 v output with 5 volt Vin power. Note that to program Teensy by the USB port, you must first disconnect the Vin power source. If necessary, you can isolate Vin from Vusb by cutting the very small trace from between to two larger pads shown below. This allows...

How are you powering the Teensy? From USB? Voltage into Vin? If Vin, what voltage is being applied?

The CD4021 is an ancient design 4000 series CMOS part that was designed for a 10 volt supply. While the datasheet may say it will work down to 3.0 volts, the actual performance is anyone's guess since there is no published operational data below 5 volts. You'd be far better served using a...

I've now had a chance to look at the schematic on a real computer and actually see the schematic markings and values. I was wrong about the gain block. Yes, you have the second stage wired as a comparator but using an LM324, when actually tested, shows results far from the expected. After...

Unfortunately, I cannot read the text or values in the schematic. But, since a non-inverting amplifier cannot have a gain of less than one, I assume system gain to be > 1. Based on the above assumption and the raw signal, I don't understand the circuit whatsoever. What is a gain block doing in...

What I'm unsure of is why you'd want to abuse yourself trying to make that library function... Paul's XPT2046 library is a model of simplicity. Just two files with six kilobytes of SPI hardware clarity. https://github.com/PaulStoffregen/XPT2046_Touchscreen If you have any problems, please...

A 3D printer certainly has merit but IMO, the simple solutions are usually the best place to start, perhaps something like this: https://www.tindie.com/products/loglow/teensy-3536-breakout-revision-a-standard/ I have no connection to the Tindie vendor, just presenting one of many possible...

What kind of touchscreen? Resistive? Capacitive? Is the TFT LCD a module or just a bare screen? Before anyone can help, they need to know what they're helping with. Do you have a link to the screen you have?

Unsafe? I don't think so. Cause any problems? Probably, likely, maybe, it depends. The problem with consumer hot glues is that you have no idea of what's in the stuff. Most of it is EVA with tons of other material mixed in, paraffin and other cheap crap left over from various polymerization...

Hot glue? One, it's not going to improve a bad solder connection. Two, it will guarantee you'll never be able to repair a bad solder connection. IMO, hot glue has some good uses in electronics but potting a Teensy and it's connections in the stuff is absolutely not one of them.

The Sparkfun shield is only suitable for the Teensy 3.1/2. The downside of trying to use an AVR targeted shield is that you'll need to supply 5 volts unless you want to start removing parts and/or jumpering around the boards exsisting voltage regulators. If I needed to connect a Teensy and that...

As mentioned, you do not have the contiguous ports to do exactly what you desire. With the 3.2, the largest contiguous configuration is one 12 bit port (C0-11) and one 8 bit port (D0-7). You will find a visual chart of the 3.2 port mapping and other useful information in this thread...

It's law of probabilities. The ILI9488 is not a common controller which narrows the field of software in the public domain. Couple that with a capacitive touch screen and it is an odd pairing since the 9488 is a low cost controller and is usually found with resistive touch (cost driven). But, I...

I'm no SPI expert but I do know it can be problematic to get multiple SPI devices to play nice on the same bus, especially SD cards. You can use any pin you want for the NRF24L01 CS since that is assigned for each device by you. Some libraries might make fixed assumptions about the pins, there I...

A note of interest for those of us in North America: All US and Canadian Loran transmitters were turned off in 2010 since the US Coast Guard and the CCG, the last remaining users, deemed them redundant. They continue operation in the EU due to security concerns with GPS and EMP disruption.