Member Since: March 15, 2006

Country: United States



  • Product WIG-11029 | about 3 days ago

    Yes, you can do this. Using the init file, set the desired trigger function to “Next” and enable the restart lockout feature for that trigger. Do a quick format of your microSD card and make sure to copy the tracks to the card in the order that you wish them to play. The “Next” trigger function plays the tracks sequentially in the order that they appear on the card, not by their file names.

  • Product WIG-12000 | last week

    Not sure I understand the comment. I’m always willing to discuss specific use cases - Just contact me directly at info(at)robertsonics(dot)com. Open source hardware allows you to use the existing proven design with your own firmware - all STM32F4’s have a permanent bootloader built in, and you can do a lot with the free (code size limited) version of the Keil MDK-ARM. You can even use the WAV Trigger’s flash utility to program your own firmware into the board.

    I’ll add the quiet mode in the next firmware update.

  • Product WIG-12000 | about 2 weeks ago

    A little confused by your question. The WAV Trigger inputs are 5V tolerant, so you can drive its serial RX input with either 5V or 3.3V. The WAV Trigger serial TX output is 3.3V, and so should work with any Arduino RX input. The library currently only sends TO the the WAV Trigger, so you just need to connect 2 wires: GND and the Arduino TX to the WAV Trigger RX. Either voltage is OK.

  • Product WIG-12000 | about 2 weeks ago

    If you want to control the WAV Trigger from a computer using the FTDI Basic, the serial protocol is documented in the User Guide (link above), and there is a sample remote control application (cross-platform, Windows and Mac). The source for that is here.

    If you want to control the WAV Trigger from an Arduino, it will be through an async serial port, using the same serial protocol. The WAV Trigger does not currently have an SPI or I2C interface. I’ve started working on an Arduino serial library and you can find that here. It’s a work in progress, but it should do what you want already.

    The serial library currently only sends commands to the WAV Trigger, so it only requires 2 wires: GND, and TX from the Arduino to RX of the WAV Trigger.

  • Product WIG-12000 | about 3 weeks ago

    There’s a single red LED on the WAV Trigger. When you apply power, the LED should blink 3 times if there’s a microSD card installed with at least 1 WAV file, or give one long blink if not. In either case, afterwards, the LED should flash once about every 3 seconds. The most likely reason this would not be happening is that the switch is in the “load” position. Please confirm your switch is in the “run” position.

    A customer did mention to me that his board was shipped to him with the switch in the “load” position, which could definitely cause some confusion.

  • Product WIG-12000 | last month

    Why don’t you contact me directly at info(at)robertsonics(dot)com and we can take this offline.

  • Product WIG-12000 | last month

    The problem with polyphony is that there are too many possibilities. With retrigger and polyphony disabled, you want to prevent a trigger from acting if any audio is playing, not just audio started from that trigger? I’ll need to confirm how that situation is currently handled, but I should be able to help you out there in any event. It may require a firmware update.

    Regarding the regulator, if you’re planning to play loud audio using the on-board amp on a pretty continuous basis, and especially if you are also packaging the unit into an enclosure, I’d recommend using a 6V supply.

  • Product WIG-12000 | last month

    For those of you interested in trying to get more than 8 stereo voices, there is a so-far undocumented init file command that will let you experiment with more. “#VOIC n”, where n is desired number of stereo voices, allows you to increase the number up to a maximum of 16. You’ll need to add this command to an existing init file using a text editor, since the WT-InitMaker app does not support it. You can confirm the setting using the WT-Remote app - the “Get Info” button reports the number of available stereo voices.

    In most cases, it’s probably safe to increase the number of voices to at least 10. 8 was chosen as the default to be compatible with the slowest microSD card I’ve encountered. I have a card that handles 12. Without a scope, you’ll know when you’ve hit the limit for your card when you start to hear crackling or pops when layering the max number of voices. For those of you with a scope, PC15 (pin 4 on the STM32F4) duty cycle indicates the amount of time taken by the mixer. 100% is bad.

    The limiting factor for the number of voices is what I call the “access time” of the microSD media, which is different than the sustained bit rate used for the speed ratings. Unlike sequentially reading a single file, mixing WAV tracks involves reading a small number of sectors from files spread all over the FAT disk. The critical issue is the time it takes between asking for a new sector read and when the card starts providing that data. I’ve not found this parameter to be documented by the microSD card manufacturers, so you’ll just have to experiment with it.

  • Product WIG-12000 | last month

    I procured a Prolific PL2303HX-based USB-to-serial TTL adaptor and just tried it. Using WT-Flasher v1.02 on Windows 7 with the latest Prolific driver, it works fine. If you can provide any more info, I’m happy to do more troubleshooting, but so far I can’t duplicate the issue.

  • Product WIG-11029 | last month

    Please follow the troubleshooting procedure here.

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