Table of Contents
Advertisement
MedeaWiz® Sprite® 4K
.
Trigger Choices Explained
Trigger Low requires a transition from a positive voltage down to ground.
Since the Sprite has an internal resistor holding the input at positive 3.3 Volts, you only need to
provide a ground to trigger. For example if you are using a push button wired from the input
terminal 2 to ground terminal 4 as shown on the following page, pressing the button applies the
ground to the input causing the transition and a valid trigger event.
Trigger High requires a transition from ground up to a positive voltage. Using the example
above, if the push button was held down normally, then released, the trigger would occur on
the release.
The Sprite requires a transition to occur on the input to cause a trigger. Holding the button
down or up will not cause another trigger because there must be a transition. Trigger Low
requires button up to down, and Trigger High requires button down to up.
Trigger with interrupt will allow a new valid trigger event to interrupt a triggered file currently
playing. If there is only one trigger file 001 on the SD, it will re-start file 001 at the beginning. If
there are more trigger files on the SD, it will start the next file playing*. There is an
approximately 1 second delay built in to prevent rapid re-staring of files.
Trigger No Interrupt will NOT allow a new valid trigger event to interrupt a triggered file
currently playing. The currently playing triggered file will play completely to the end before any
new trigger is allowed.
Trigger Delayed will delay playing the triggered file until the looping file 000 has completed.
When a valid trigger event occurs while file 000 is playing, the Sprite will wait until the end of
the 000 file to proceed with the triggered file. Once the triggered file is playing, there is no
interruption. It will play to the end. The Sprite will only allow a trigger event while the looping
file 000 is playing.
*This allows multiple trigger files to be used. Each new valid trigger by the rules above will cause the
next file on the SD to play. After the last file has played, the next valid trigger will play file 001. The
looping file 000 is not considered a trigger file. For ease of use trigger files should be named in order
001, 002, 003, and etc. up to 200. If you desire a random distribution of play, you may place multiple
copies of the files on the SD and randomly assign them to the sequenced number names.
21 |
P a g e
Advertisement
Table of Contents
