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    Snooze not working with any T4.x on TD1.56

    Okay :( I saw it's not updated for some time, With "Serial" chosen it's not working properly with and will reset before going through setup(); The old version of snooze without the USBserial-snooze block can still work with "MTP_experimental" used so its fine with my old LC sketch, I guess I...
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    [posted] Venti-POV v2.0 80HD

    Thank you :) I'm planning on updating the project using Teensy 4 this year Should I post on a new thread, or reply under this thread?
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    Snooze not working with any T4.x on TD1.56

    Hello, not sure if this is related problem Snooze examples (this case: Snooze\examples\deepsleep\button_hold_wakeup ) not compiling with T3.6/LC/T4, with USB Type: "MTP Disk experimental" chosen , while choosing the default "Serial" it's fine...
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    Teensy 4.0 & battery

    you're right, your wires should work I use a MCP73831 to charge my portable teensy device, made with LC, connection is similar with your picture above, However you can test the connections separately to make sure that works well :)
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    Sure, why not I did made some version using teensy LC and its fine. using SD card/apa102 It would be restricted to its SD reading speed, but still can use DMA for apa102 drawing could reach up to 40 pixels and still have some good enough POV effect for flowart
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    Teensy 4.1 NON default SPI pins possible?

    Hello, I use nRF24 module a lot too, the library is fine with LC, but I've not tested with T4 yet. Not sure if the RF24 library did recognize it as using SPI pin, or soft SPI if the latter, 600mhz bit bang could possibly be too fast for your nRF module, you try to compile your code at...
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    T4.0 Sleep modes

    tested with another example here using onboard LED for feed back #include <Snooze.h> SnoozeBlock dummyConfig; SnoozeSPI sdCard; SnoozeDigital digital; SnoozeTimer timer; SnoozeUSBSerial usb; SnoozeBlock config_teensy2(usb, timer); SnoozeBlock config_teensy(usb, sdCard, digital); void setup() {...
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    T4.0 Sleep modes

    SnoozeTimer timer; SnoozeUSBSerial usb; SnoozeBlock config_teensy2(usb,timer); Serial.println("ready to sleep"); timer.setTimer(2); Snooze.deepSleep( config_teensy2 ); Serial.begin(115200); Serial.println("waked, good1."); delay(2000); timer.setTimer(4); Serial.flush()...
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    T4.0 Sleep modes

    SnoozeUSBSerial usb; ... ... #if defined(__IMXRT1062__) SnoozeBlock config_teensy40(usb, digital, compare, alarm); Hi, I'm still testing too so I cannot give a concrete answer, but looking into the examples code above, its always has the object "SnoozeUSBSerial", not sure why and without it...
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    MTP Responder Contribution

    hadn't following for a while, I did this before with T3.6, an external button interrupt was used to break flag. it should break after a button is clicked and a mtpd.loop() is returned I never know if that was healthy to the SD, no problem to me so far while (globaltime < 3000) { //...
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    MTP Responder Contribution

    Yes it already could. However SDIO interface is not avail in teensy 3.2, so it will transfer file at a significant slower rate.
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    [posted] Venti-POV v2.0 80HD

    First my codes, should need to use some my specific libraries, (though if I remember correctly, the same library with 1.8.7 compiles too) this was the full folder of my used version and libraries, and this was the .rar of my code when the post was published. it should work(compile) with...
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    [posted] Venti-POV v2.0 80HD

    hi alezarate, Sure, I shall publish my work in a while. You are correct, I'm just not yet convinced if I can't find any commercial value with my design It didn't gave me much over two years :) just very fun flowing with it and showing to my friend I'm currently switching my job from flow art...
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    [posted] Venti-POV v2.0 80HD

    Hi Frank, you can find an older version for arduino nano here : https://github.com/Alan-NTHU/POV-Venti---flow-art currently I'm not planning on publishing Teensy version of code yet, however you can find many other code here...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    Hi Janezek, yes both the youtube links is visit-able, I'm just not sure what's the glitch but I see it clearly now the data transfer rate or even frame per second could do something to the ws strips at early version, causing ugly flickering , not sure if yours do the same your second video...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    Hi Janezek, not sure what your glitch is like, can you be more specific? or is there a normal group to compare with? I saw you have 1531 pixels, if you're using ws pixels you might need to care for power supply and refresh rate, It is not strange when static color like CRGB::Blue won't glitch...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    Thanks, hope you have progress on your work too! at first I've think ROM at chop is not enough so I focus on using a SD, very well established library, and seek on ROM chip but not successful its quite enough on T3.6 or T4 but not at T3.1 or arduino For everyone: here's another record of the...
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    Need help on using SPI library

    Hi, My code attachment on #3 should work, please give it a try I no longer use the TLC5947 or TLC59711 driver in my later version of POV. but the library and code should work, you may look into it and see the code, the SPI of the driver is different and works 12bit for a LED, if you don't...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    Hello, Happy new year community :) I have did another build of POV ( is this still POV anyway? lol) for a drum. featuring Teensy LC and 4m (1m*4) of apa102(60pixel per meter) in parallel of meters. time-coding is so flexible for any kind of performance : It can make some time-specific and...
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    MTP Responder Contribution

    Hello, following also, had anyone successfully tested MTP on teensy 4.0? Thanks
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    I use some of a elapsed microseconds and use other things to do that, and check if time is favored or not before FastLED.show(), or DMAshow(), whatever draws the LED this part of my unsigned long targetmicros = 0; elapsedMicros nowmicros; all other variables are accordingly, with my lines...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    @Janezek I suggest using octows2812 library, available at PJRC website libraries which splices your LED chain into 8 parallel chains and uses DMA for maxima speed but you'll need more setup on hardware connection , more wires to solder but shouldn't be a problem
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    @abrownmn : did you meet any problem using with the hardwares? Not sure if cap/resistors matter, I did add a 47uF between my power battery teensy have enough cap on the board and apa102 were pretty robust and don't need extra cap to work fine, adding some 470R between apa102 data<-teensy MOSI...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    Sorry to interrupt, sharing my work on POV :) Here's my latest POV, 36 pixels with Teensy LC setup, surely it should run well with Teensy 3.6 I think? I'll do that later in JULY. I've completed adding on nrf24 module into my POV and achieved wireless synchronize, while MTP cannot be used with...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    @abrownmn : freezing sounds like a power supply bug, if you have your image squeezed, you can adjust settings yourself for a good effect. I recommend at a speed that repeats letters "ABCD..." less than 40 units a second, and compact pictures "a face, pikachu or something" not more than 20...
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    Looking for a start on choosing RF module

    Hello, Its been nine months,I've completed adding on nrf24 module into my POV and achieved wireless synchronize, and also a easy version as a hand LED-stick. I can also recommend nRF24 module for anyone looking for wireless option. :D it works with my teensy LC module, while MTP cannot be used...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    apa102c and apa102 (or sk9812 from China clone) those use SPI wires are probably all usable with FASTLED library with apa102 setup, if you were looking for a source, I know the origin company contact of the Intellectual design in Taiwan.
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    Teensy LC with nrf24l01 Issue

    Hello, did you make it well? Now I have trouble using nrf24 with SD card on the same SPI port of LC :\ So looking around if anyone meet this problem too.
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    SD Card on SPI1 - T3.5

    hello, checking in here. Sorry for reviving, just thinking about the same thing : the libraries were hard-coded to SPI0 and need work to use in SPI1 in my case I probably will be fine to use SD card with SPI1 and nRF24 with SPI. (teensy LC is it, otherwise I use SDIO too) both can begin() and...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    glad it worked, switch your line from FastLED.addLeds<APA102, data, clock, BGR >(currentLED, totalLEDs); to FastLED.addLeds<APA102, data, clock, BGR, DATA_RATE_MHZ(8)>(currentLED, totalLEDs); should do the job, otherwise update your FASTLED library? I don't know what QR code could let beer...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    Where did you went wrong, does it compile? or just not showing intended picture at all? you have a working example so the hardware should be fine I guess, however your example from adafruit doesn't use FASTLED. I guess you should define your SPI clock speed as I didn't see it above ...
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    DAC/ADC reference inconsistency

    @Paul Thanks I didn't notice the 6-bit / 12-bit DAC were different modules. I first see the comparator used as wake up source in snooze library, and can use some DAC reference voltage to compare. At teensy LC datasheet 2.2.6 or Table 2.7, at 46 page /876, I see LC have both 6/12bit DAC modules...
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    DAC/ADC reference inconsistency

    Hello, not sure if this question related, I see DAC could be used as a comparator source from datasheet. though DAC cannot use AREF as a reference, can DAC work as an analog reference, externally, with some extra wiring from DAC to AREF?
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    Not sure if 2020 strips were available yet but I did source mine here. Last year they seems to be on tesing and not widely available. You can also find details of Fritzing apa102 LEDS on this post "http://forum.fritzing.org/t/part-request-to-apa102-2020/4437/56?u=alanchen" the footprint and...
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    Teensy LC with nrf24l01 Issue

    my LC&nrf works fine with direct power from 3.3V on LC and pin 8,9 as CE/CSN, 11,12,13 as SPIs, 15 as IRQ. I first thought it was related to capacitors , but not all cases? my code first didn't work as reciever but works fine as transmitter by accident I discover this: I don't sure why, but...
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    Teensy LC with nrf24l01 Issue

    Hi guys, I recently just met some problem with that related, from my experience the nrf module could not run faster than 8Mhz, I once had a uno run at 24Mhz, that divides to 12Mhz to SPI I guess? and the module can do not more than successful begin(), other function that wait for any data...
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    MTP Responder Contribution

    @sschiesser I think something key was written in the MTP library, but the library is relative simple to edit guess you can probably modify somewhere in "https://github.com/yoonghm/MTP/blob/master/MTP.h" like changing line 37 : SdFatSdioEX SD; to SdFat SD; Also I didn't find call of...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    it is safer and stabler as they work on different voltage by datasheet. If you don't shift the level, you have to take your own risk that they don't work as intended By far I didn't meet any level-related error by direct driving apa102 with T3.6 SPI pin signals. ( and they both powered directly...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    if you had extra buttons or time to work on, you can make the brightness adjustable after programmed. I use such settings to swap between daylight and night. I plan to solder all the possible parts on my own designed PCB, so I had to avoid tricky IC packages :( QFN or apa102-1515 is by far the...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    @masterslave wow, there are so many new pixel shops today :\ guess thanks to widely available pixel strips, and the maker culture. not yet,:p:p I'm investing on my low-power radio pairing model with nrf radio, in fact just coding right now. I consider motion sensor a less needed feature in...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    @masterslav if your program is not needed to upload for your user, you don't need to leave the button reachable otherwise, you can line the program pin from the board out to ground through some other push button /location, so it's easier to access
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    [posted] Venti-POV v2.0 80HD

    @embedded-creations thanks for the link! It's useful for anyone would make their own POV I use my own board for many reasons, preferred density/count and size, there is also special designed route so the resistance by trace is same to each LED, stripped-LED can easily see decay of brightness...
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    Looking for a start on choosing RF module

    @gfvalvo Did, but not deep As I never used any RF module before I don't understand which mode/state does it refers to (power down/standby?), and if it fits my requirements I don't recognize them. Also I didn't see comments about those states in example codes, not yet.
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    Looking for a start on choosing RF module

    Thanks for suggestions guys, I just ordered some of nrf24 modules. Since my project is a battery project without a hard-wired switch. Mainly my questions falls on a module's quiescent currency or ability to hibernate, which I can't find out from datasheet. I'm going to test on this and report...
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    Looking for a start on choosing RF module

    Hello community, I'm looking forward to add Radio controll / synchronize to my teensy LED project. I am totally new to RF module and used none before just did some search and read some data with them, there are many different modules/libraries and their key words are different :( also there are...
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    Reference for using SD Card on Teensy 3.5

    Both SD/Sdfat library from teensyduino is already usable with T3.5/3.6's onboard SD with SDIO features, You can just use any example with the CS pin set to BUILTIN_SDCARD as "SD.begin(BUILTIN_SDCARD)" by far my experience all function code work with a arduino-uno/T3.2 on microSD will also work...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    Hi guys, I got a new score on refreshing rate. this doge.bmp is a 24bit bmp with a width of 80 pixel and gets a horrible 3900 FPS, that squeezes the image okay, when it goes to DMASPI it turns out that FPS depends highly on micro-SD cards, but not by size (as this one uses a 128Mbyte card...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    @gerhards congrads, your first proj is POV with apa102-2020, and even with IR controll, cool, I think 144 LEDS might be too much for some cards, also you'd might need to find a faster card for that. there's no definite clues which are faster, sometimes lower classed or smaller volume gives...
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    [posted] Venti-POV v2.0 80HD

    I just compiled it with my Arduino 1.85 newest build and its compile-able . It is a less_featured version back in 2016_MARCH. Calling it "corrupted" might be wrong as its only less_featured with a low bmp count limit and strict file names. notice my comments in the start of program...
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    Teensy APA102 POV Poi / Pixel Poi Build. Tutorial

    Hello community, I've rearranged some of my script (of DMASPI) so it can compile with latest Arduino 1.8.5 and Teensyduino 1.42 I am not good at making library, so I made them into examples, This shows how to use DMASPI over apa102, and also with CRGB arrays that could use in FastLED projects...
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