Wave Trigger on 5 Volts

Sensors Sound & Audio
1

The user manual says “…power the WAV Trigger by supplying a regulated 5V to J8, pin 4”.

Which pin is “J8, pin 4”? Thanks

2

AT the right side of the board. There you will see 4 pins in one line. 5V, 3.3V,PLO,GND. Please find the PCB layout with prefixes here: https://easyeda.com/oshw/WAV_Trigger_Op … -Neq0AaKjT

3

What is the 5v solder jumper for?

4

Looks like it allows you to power the board via a FTDI cable.

5

I noticed the “5Vin” on the lower right, can I use this? https://robertsonics.com/wp-content/upl … Beauty.jpg

6

Powering the WAV Trigger

The WAV Trigger is typically powered through the on-board 5.5×2.1mm barrel jack. The allowable input voltage range is 6 to 12VDC, and the jack is center-positive. The resulting on-board regulated 3.3V and 5V supply voltages are available to power small external circuits and sensors via J8, pins 3 and 4.

You can also power the WAV Trigger by supplying a regulated 5V to J8, pin 4, provided you are not using the barrel connector. Keep in mind that the WAV Trigger can draw over 200mA if you enable the on-board audio amplifier and drive the speaker at high volume.

In addition, you can also power the WAV Trigger directly from an FTDI Basic 5V by installing SJ2 (solder jumper.) IMPORTANT: If you install SJ2 you should not connect the FTDI basic 5V while also powering the WAV Trigger from the barrel connector.

7

This is all so confusing. I’m electronically challenged. I just want to close the trigger pins and make sounds using a 5V power supply. I don’t know what FTDI Basic is. I don’t have an Uno or Arduino. I don’t understand “J8, pin 4,” speak. I’ve finally found the ‘published’ info. it is concise and I can make sense of it. I’ve pasted it here for others that just want to trigger sounds on 5V:

https://robertsonics.com/help/

Extra Credit: Powering the WAV Trigger from the Uno.

It’s possible to power the WAV Trigger from the Arduino 5V, although you probably should not do this if you’re planning to drive a speaker continuously at high-levels using the on-board amplifier, due to potentially high 5V current draw (even though I do.)

First you’ll need close the solder jumper on the WAV Trigger that connects the on-board 5V to the serial connector. The WAV Trigger doesn’t ship from SparkFun this way, because people might connect an FTDI Basic at the same time that they’re powering the WAV Trigger from the barrel connector. I always close this jumper because it allows me to power the WAV Trigger from the FTDI basic.

https://robertsonics.com/wp-content/upl … per001.jpg

Now just connect a 3rd wire from the Uno 5V pin to the WAV Trigger pin labeled “5Vin” next to the serial RX pin. Make sure not to power the WAV Trigger from the barrel connector at the same time!