manitou
Senior Member+

Maybe not. the multiple satellites are from different constellations, i think the gps solution probably uses no more than 12 satellites, though it's able to choose from a larger collection of strong signals.

Nice. Here is graphic data from T4.1 connected to sparkfun GNSS NEO-M9N with external antenna mounted on windowsill. M9N can use up to 4 constellations (GPS, GLONASS, Galileo, BEIDOU). PPS To GPS: 134 ms...

Earlier posts on light-sensing with LED, https://forum.pjrc.com/threads/40001-LED-as-a-light-sensor https://forum.pjrc.com/threads/28407-Teensyduino-access-to-counting-cpu-cycles?p=116332&viewfull=1#post116332 LED RNG

here is example of "slow PWM" for Teensy4 using XBAR https://github.com/manitou48/teensy4/blob/master/qtmrxpwm.ino discussed in...

I ran your 3 timer sketch, feeding pins with 10khz from analogWrite() on pin 8. The low order digits from the three counters seem to match 29433 29433 29433 31433 31433 31433

The teensy core uses TMR1 CH0 for PWM, so it pre-configures some of the registers. You need to clear a couple more registers, try adding line in RED ... TMR1->CH.CTRL = 0; // stop TMR1_SCTRL0 =...

You could define BMP3XX_DEBUG in the Adafruit_BMP3XX library, and it should print out progress in performReading() that might help you locate the problem. Since the Teensy 4 is so fast you might look for places in the...

In DCP_HASH_Update() change declaration line to read: size_t blockSize = DCP_HASH_BLOCK_SIZE; and for test string of 64 bytes sketch returns 241003f8 (github updated)

The T4 hardware CRC is very limited, 32-bit fixed polynomial. It also has the flaw that input must be multiple of 4 bytes (it willl pad with nulls, if not), see https://community.nxp.com/thread/506478 The SDK CRC...

FWIW, some GPSDO discussion and temperature issues in disciplining a T4 clock https://forum.pjrc.com/threads/61581-Teensy-4-1-NTP-server As a proof of concept, here is a sketch that uses an external 8mhz GNSS GPS...

yes, as referenced in post #13. I did not change NUM_LEDS in either torch.ino (240) or torchframe.ino (378)

I've run both the torchframe sketch and the torch sketch (github), with 8-LED stick on pin 11 of T3.2. I have nothing else connected (no buttons, no IR receiver, nothing on A0 and A1). The torch sketch dimly lights...

How about trying the simple FastLED bllink example, testing with various values for NUM_LEDS. Following works for me with 8-LED neopixel stick on pin 11 with 3.3v and GND from T3.2. #include <FastLED.h> // How many...