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I've read those data and they are not really telling much, apart from the very high sleep power consumption (1400 uA @ 5V).
Well I guess someone will post real world figures in a few weeks.

Does anybody has clear figures of actual power consumption, for the Pico?
I know, I seem to be the only one around here who cares a lot about power consumption ;) , but for me that's very important...

Pin number 13 is already "tied" to the onboard LED of Teensy 3.2. So it will always engage the onboard LED.
That said, you can still add another (external) LED to pin 13.
LEDs need series resistors...

Sure!
Read here:

https://www.pjrc.com/teensy/td_libs_Bounce.html

let us know if you need more support.

Just a quick note: your "delay(3)" works for 115200 data speed; but it's not going to work for different speeds.

With my HC-05 (v2 and I only use it as slave, so cannot help with INQ) I have to...

Assuming you're using Arduino IDE 1.8.12 with Teensyduino 1.52 installed, you could use the example:

"Examples->04.Communication->Serial.passthrough"

as a base, replacing "Serial1" with...

I don't know what Paul thinks about it, but I have to say I prefer 3.x to 4.x unfortunately.
4.x has too much power draw for most of my projects, even at lower clock speeds, and the powersave/sleep...

Paul asked to wait until final Teensyduino 1.53 is out: he does not want to discuss future models until then.

I have enabled 8 Mhz and 2 MHz in boards.txt and tried a few sketches on the LC.

Powered at 3.3v by Vin with Vin-Vusb cut:

Run @ 48 MHz = 11.8 mA
Run @ 24 MHz = 9.3 mA
Run @ 8 MHz = 4.3 mA...

You don't tell which development environment you are using.

If it's Arduino IDE + Teensyduino, you are already using the FPU automatically, no need to take extra steps. The compiler already...

You mean the setup runs fine and finds the board ("BNO found"), but the main loop never prints anything (so myIMU.dataAvailable() returns false)?

Yes, this is very unfortunate.
I have a lot of code, developed for T3.6, which uses "regular" SdFat with SdFatSdioEX objects.
Now I can't use it with T4.1, because SdFat Beta does not provide...

Thanks for the report.
Is this with "raw" wavetable only, no modulators?
Not familiar with the Audio Library.

VisualMicro does not really hang; it just takes say 20s pauses once in awhile, for whatever reason. :confused:
Not common, but happens.

I routinely use VS 2017 with Visual Micro (registered version).
I like it very much; sometimes it has looong pauses (to the point that VS complains about the Visual Micro extension) but all in all...

You can't declare an argument of a function like that.
Moreover, you declare Squat but in the function body use MotorValues instead.

Try:


void Ev_GoTo_Pos_Struct (Way_Pt MotorValues)
{...

You cannot initalize a struct that way, it's not an array.
Also your declaration does not define a type.

This should work (untested):


typedef struct Way_Pt {

float M1;
float M2;

Excellent, many thanks Paul.
Will report back.

Hi,

always struggling with power budget, I would like to run the LC at less than 24 MHz (I don't care about USB).

T3.2 has 16/8/4/2 MHz, LC has not.

It there a way to add slower speeds to...

Have you tried with the latest Teensyduino (v1.52)?
That's usually a good idea, expecially for T4.x

Hello and welcome!

Absolutely what Paul said, of course.

Just a quick glimpse:



Different GCC optimizations levels (think -O1, -O2, -O3)

Wow, that's BAD! :(
It would render the T4 unusable for most of my projects.
I had hoped for at least T3.6-level sleep currents (hoped for even better power saving, since the chip is newer and...

A level (fast) shifter may be the right solution.
Zeners are tricky and introduce a parasite capacitance which may smooth out signals.

ma? Are you sure?

A soldering iron:
https://hackaday.com/2017/07/24/review-ts100-soldering-iron/

Just to give the ball a first kick: I'm currently tipping my toes on BT (firmware to connect a medical device to an Android smartphone), and used WiFi in the past for a custom project (performing art...

If you prefer soldering irons to stations, I use an Ersa Multitip C25 and a very, very nice TS100, which I love more and more.
Purchased both on Amazon (IT).

Yes; just one, and 12-bit only

It may reduce LED brightness, no damage to Teensy. :)

It says the video is not available?

Please avoid removing the resistors and plugging the LEDs directly to the Teensy pins.
You risk damaging the Teensy.

You don't need a 12V PSU to measure the current:

Replace your resistor...

You can't include both <i2c_t3.h> and <Wire.h>. Include <i2c_t3.h> only.
If other libraries include <Wire.h>, the only way is replacing every Wire.h with i2c_t3.h across every source of the...

Hello, is there a calibration routine to be performed?

I tried to work on a project for an underground orientation instrument, but stumbled upon unreliable devices (mag + gyro + compass), even...

I got crazy trying to find a reliable unit. I tested maybe 3 o 4 of the most talked about, with tilt compensation etc., with "sphere" calibration etc.
Never got reliable results. Gave up in the end....

I did not ask for UPS. It was the only option available.

EU is a total ripoff for USA and FarEastern goods.
Most couriers charge absurd fees for just the paperwork (besides proper customs fees); UPS charges Eur 14, for example.

And, yes, Exp-tech.de...

Indeed it would be an excellent solution.

For example, it could have been called automatically by the toolchain when the user selects "Smallest Code" (which means it has memory occupation issues).

A user reads this (Teensy 4.0):
https://www.pjrc.com/store/teensy40.html
"1024K RAM (512K is tightly coupled)
2048K Flash (64K reserved for recovery & EEPROM emulation) "

And this (Teensy 3.6):...

I typically use 4xAA NiMh; expecially because most power banks will auto-turn off after a minute if the power draw is too low.
But if the power bank works correctly and the Teensy has no shorts...

Excellent explanation Paul, thanks.
To be honest there were already bits of explanations across the various 4.x topics, but this message should really be in the T4.x web pages, IMHO.

With the "Blink" example it's even worse: using "Faster" (1.8.12 + 1.52)

BLINK


T3.6:
Sketch uses 10724 bytes (1%) of program storage space. Maximum is 1048576 bytes.
Global variables use...

Thank you, but I have to confess I'm the least knowledgeable of all the Teensy forumers! ;)
There are real geniuses around here (not to mention Paul Stoffregen Himself, of course).

As I said,...

Now you have a comprehensive view of the situation. :)
Yes, 20mA is probably the maximum current before the LED dies from overheating. They are quite sensible to that, so the cooler the better....

Yes, if they have different I2C addresses!
Sometimes you can setup the address via commands, sometimes via jumpers, sometimes not at all.

I'm not sure they are compatible with Teensy Ethernet; they seem to rely upon an underlying TCP stack (for example by WiFi101, ESP8266 etc.).

Anyway there is an example for T4.1 Ethernet, it's...

Those values are the real current (mA) which flows across your LED in each situation (assuming the resistor voltage you measured is right).
As you see, it's quite smaller than anticipated, which is...

What you ask is more typical work for a Linux Single-Board Computer (i.e. Raspberry Pi and the likes) than for a microcontroller.

It can still be done, but it involves quite more work.
...

New version here:
https://www.dropbox.com/s/57nbmr2pe21l22v/LEDs_amps_volts_2.xlsx?dl=0

BTW my country uses comma too, but I routinely force the decimal point (I dislike the decimal comma!)
...

Hi!



Note that I did not suggest measuring mA, only V.
This is because the mA measure can only be indirect (short of inserting the multimeter in series).
Not a problem: we obtain the current...

Ahah!! I didn't even know the 1062 could manage this much... :cool: