Activity Stream

@Bill Greiman Thank you!

Unsafe for the VBat input or unsafe for the battery? These ML batteries should be safe to fully discharge is my understanding, with the proviso that they 'only' get around 100 full charge cycles, which is fine for...

Thanks for the info. I'm trying to use Teensy 4.1 pins (I2S external microphone) 3-LRCKL, 4-BCLK, 5-RX. I assumed pin 5 was the problem when using the I2S AudioInputI2S2, maybe it's really a pin 4 problem. I remapped...

OK, corrected.

Yes, on Teensy 4.0 & 4.1, you can remap to any digital pins, even less than or more than 8 pins if you like. In Arduino, click File > Examples > OctoWS2811 > Teensy4_PinList to see how. On Teensy LC & 3.x,...

Following the manufacturer recommendation sounds reasonable. Is there something that prevents the battery from being discharged to an unsafe voltage?

FWIW, the Teensy 4 experimental ADC code uses 4X oversampling and a FIR filter, but still lacks (useful) DC removal and the resampling to 44.1 kHz is crude rather than proper interpolation. The FIR coefficients...

AltSoftSerial does not work on Teensy 4.1. The main reason is a belief that 8 serial ports are enough for anyone (kinda like 640K on old PCs....) Likewise, SoftwareSerial when used with non-serial pins has limited...

I'm glad i found this! using teensy 4.1 with single reads of several pins assuming 4.1 had "all ADC pins work with all ADCs" It was stopping reading when ADC1 read 24/A10 and 25/A11, swapped them to ADC0 and now it is...

It Looks like this post did solve the problem... @pual - Can you confirm ? I dont really understand the issue or the solution to be honest... I will check on my Mac and update. Update: the controller...

I think Google is the only one where I have an account. I'll see what I need to do for that. I wonder if I could put the video on my GitHub account, along with the code and demo .BMP files. I've never tried to...

*phew*.. I think I have all added up to now. The list ist growing. Impressive. Later, in 2-3 weeks, maybe :)

Here are the 2 OSH Park links for CS42448 hardware. Teensy 3: https://oshpark.com/shared_projects/2Yj6rFaW Teensy 4: https://oshpark.com/shared_projects/gVFy0fWQ

ADAU1966A works with TDM output. So far only tested with Teensy 4.0 & 4.1, but almost certainly works with Teensy 3.x. https://oshpark.com/shared_projects/O7iqdcLr

SPH0645 works, but requires a software filter to remove DC. I put an example in the library some time ago. File > Examples > Audio > HardwareTesting > Microphones > SPH0645 Edit: MP34DT01-M (PDM) definitely...

ADC input on Teensy 4.0 is still experimental and currently only supports mono. It sort-of works, but probably not well enough to be useful for most projects. If you or anyone else wants to dive into the ADC code, I...

BTW. this is what i mean by wrong Hat... The red one is Windows default i guess and the green one is my Hat Switch, when nothing is pressed

Yes, just back to desk and I see email arrived. Will be a couple hours and I'll give it a look. 107 is free here ...

Thought so - but had to ask if is was near done and might line up with TD 1.54 now it is incorporated for awesome improvement - those write rates in P#33 are better than the old SD read rates. I've had the SdFat Beta...

Tim, got my email?

Thanks! Typo fixed, and outputs added. I won't add links to products or breakouts. Or what do you think? Some PDM(/TDM??) microphones are missing.. haven't used them

Started to write ... that but the p#6 SNIPPET showed attachInterrupt() after pinMode()'s there - yes - that is how it should be done

I understand that, I'm not sure why INPUT allows interrupts while INPUT_PULLUP isn't, so i wanted to understand that better If i was more familiar with the ARM architecture i would go with direct pin/register...

I suspect to be complete, for DAC's you need to separate the 3.2 (1 DAC) from the 3.5/3.6 (2 DACs). The LC has a single DAC also. The T4.0/4.1 have MQSR/MQSL. All of them should have USB audio to the main USB...

Added some links!

PCM1802 should probably link to this page. https://www.pjrc.com/pcm1802-breakout-board-needs-hack/ In addition to the PCB error on the most common breakout board, the FSYNC signal has been a confusing point.

You indeed did so: link. Paul

I remember I have tested it years ago. So, yes.

Hi Frank, thanks for making the list. I think the TDA1543A also works with output PT8211. Can't verify it though. Paul

Paul said, pinMode completely reconfigures the pin. This includes interrupts.

@defragster i'm not actually using interrupt on pin 14 since it an analog pin (A0 or PTD1).

So pinMode (pin#, INPUT) doesn't interfere with the interrupt config? it would be best practice to set the interrupt at the end of the setup? I have problem which relates to the hat switches (which is why is asked...

I have no idea if it works or not, but one thought might be to use the USB host support, and connect several USB to serial converters to a USB port. If you need more than one, presumably you would need a USB hub or...

Thanks, added :)

I have used NXP UDA1334A with T3.6 and I'm currently using TI PCM5102 with 4.0 Simply using the AudioOutputI2S object and not connecting the MLCK signal (They generate it internally) :)

You need to upload the video to one of the sites mentioned in the video link window , and then enter the link into the window.

Release of SdFat is not related to Teensy. I like playing with Teensy but the overwhelming number of users are on other boards. Most of the mods in 2.0.5 will be for other systems. I will be adding more support for...

Also I am trying to use this library on a Arduino Nano, Using the same processor like the UNO , thought I could use pins 8RX and 9(TX). But it does not receive anything most the time. If I put the oscilloscope...

This software worked like a champ after I changed my wiring to CAN1 on the Teensy 3.6. I'm using the Teensy 3.6 DIN rail adapter, and the Waveshare transceiver. I'd say this setup is one of the hidden GEMs in CAN...

Finally, 5 months(?) after ordering on Ebay, 2pcs Philips TDA1543 in DIP8 package showed up in the mailbox today. TDA1543, not the TDA1543A. The TDA1543 accepts regular I2S format, the TDA1543A accepts left-justified ...

The hex lines below from a T3.6 hex file show the 4-byte record at AD78 that breaks the 64-bit alignment. Further below are lines from the symbol file. AD78 is .fini (language cleanup code), which is followed by...

Any pointers on how to modify the library to run at 400kHz? I am trying to drive a run of 60 APA106 LEDs with a Teensy 4.0 (via a 74AHCT125) and the last 15 are flickering significantly. I can duplicate the flickering...

Great news Paul - big difference supporting a known system with (fixed) BOM for in house builds - versus supporting a generic range of items like FLASH chips.

@Bill Greiman - is there a feel for the coincidence of the 2.0.5 b1 timeline being weeks away from release that might coincide with TD 1.54 for use as SD.h ? ... both of course being unknown? Or is the new sdFat beta...

Unfortunately, your circuit diagram illustrates a major problem with direct connection of Wheatstone bridges. They often present several K Ohms of impedance at the ADC inputs. This can slow the response of the circuit...

Thanks for letting us know, Frank. That's good news. I'd like to understand why the hex files always have the same pattern of record lengths ...16,16,16,8,4,16,16,16... There must be reason those records of length 8 and...

I have posted the mods to the Teensy SDIO driver that allow fast simple loggers and the ring buffer for use in SRAM_L/SRAM_U on Teensy 3.6. Try the TeensyDmaAdcLogger and TeensySdioLogger examples. Enable this...

It is a digital equivalent of a "potentiometer". The encoder library will tell you which direction and how many pulses (think clicks) it was turned. You get to do the rest. By the way, if you want impressive looking,...

I posted a new version of SdFat-beta with the drive strength mod. It also has two examples that demonstrate new features in the Teensy SDIO driver. Try the TeensyDmaAdcLogger and TeensySdioLogger examples.

I posted SdFat-beta with the new Teensy SDIO driver and two examples that demonstrate fast data logging using the new driver. Try the TeensyDmaAdcLogger and TeensySdioLogger examples.

Yes of course.

Does the fact produce any problem that the tft display and also the audioshield use pin 8, if I want to use both simultaneously?

Thank you, so I assume that this will do what I want, which is to be able to dial up a comm or nav frequency? Not sure what the difference is between this and what would have electronics? Were you able to also...

Great stuff! It works with my file 8120 lines x 16 bytes = 129920 bytes code size flashed with no problem. Code seems to work as expected, will test and report. Joe thanks for making this work. now we have a way to do...

I will check it out! Just curious, why the Teensy LC?

Michael, thank you very much for your anwer. After i read Paul's post too, everything is very clear.

Yet another update... doing more testing. This morning I found (and fixed) a timing issue with initializing the flash chip's non-volatile status2 register. This is another place where the Teensy test fixture...

just changed the 10k to 110R and now its working, gonna change my new boards to 5v but for now 3.3 works regarding software controlled trs control, it would be awesome, i read in the stackechange post something about...

I have not updated UsbFat for six years. I have been meaning to add an example of USB storage to the current SdFat. This example shows how to use any block device with SdFat. The driver uses a USB shield library...

Oh, that means it indeed works with the inbuilt LED. Seems that the measuring just needs to be 1000 times faster? (us vs. 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

Update Ha! It happened with the WS2812Serial-only (no FastLED) version too. That restricts the search quite a lot and probably exonerates FastLED. Luca

JayShoe, thanks! I just picked a free gpio near where I could route my greenwire to. For ease of routing I will use a pin on the other side of the I2C pins when I revise the board. I think the TLV320AIC3206 uses 21,...

Here is the calculator code if anyone is interested. It can be imported by Import-JSON (don't forget to uncheck the Replace Flow checkbox if you just want to import it into a existing design) ...

Looks like you may be wrong on this one ? Tried that and all I get is "C:\Users\peter\.platformio\packages\framework-arduinoteensy\libraries\XPT2046_Touchscreen/XPT2046_Touchscreen.h:46:7: note: candidate expects 0...

Pretty sure the TLV320AIC3206 driver (and board) uses pin 22 for reset. I noticed that on your schematic when you posted earlier. I meant to check to see if the reset pin was required, so I could warn you, and I...

Any use of pinMode will do this. It completely reconfigures the pin, overwriting the previously set interrupt config. Maybe pinMode should check for this case? I'm also considering adding a pinModeFast function,...

Snippets are usually a distraction - better to have the whole code posted if it can't be cut down to a smaller sketch that effectively shows the problem - that's why this :: Forum Rule: Always post complete source code...

Hi Paul, Thanks a lot for the answer! the code didn't compile because it is a snippet from a very long code... i didn't want to clutter the post. I did found out what the problem was. I would be happy to...

Yes, my Siglent 1202X-E has issues in that area. That's what I emailed them about. I'm expecting that when I keep the signal within screen limits, I'm not overdriving it. But the pictures below tell a different...

Agree with PhilB. Here is a user manual on this switch. Connect Teensy's 3V3 output to pin "+" on the rotary encoder board. Paul

Those look like just switches to me, no electronics. They will run fine on 3.3V.

Flasher3c.zip is attached. This update accepts the as-built Teensy hex files and so avoids the need to pre-process to get 64-bit aligned hex records for T35/T36. The differences from Flasher3b are (a) flash and LMEM...

I've added a webserver to the code to make it easier to get data from the NTP server. /state.json from the teensy returns the following structure: { "ppsToGPS": 396, // milliseconds between PPS timestamp and...

I made some more progress, thanks to the contributors who have already written Audio library code for the TLV320AIC3206. Many of the register names and sequences appear to be the same or have similarities with the...

I believe the that library supports changing which SPI on the begin method... That is if you do something like: XPT2046_Touchscreen ts(CS_PIN, TIRQ_PIN); // Param 2 - Touch IRQ Pin - interrupt enabled polling ......

Latest update includes: * Settings tab categories can have individual colors (hardcoded but easy to manipulate in code) * Project Tree View is now functional (except it don't update when adding/moving a...