UPDATED WITH HEADLESS (NO KEYBOARD OR MONITOR) INSTRUCTIONS FOR MAC AND WINDOWS.
PLEASE GO DIRECTLY TO POST 61.
[edited 8/31 for mac users]
[edited 9/5 for headless link]
Since the development of Room EQ Wizard (REW), analysis of a home theater's frequency response (FR) has become routine, and, as a result, great strides have been made in making one's room sound as good as time, effort and finances allow. Though there has always been interest in tactile response (TR), as demonstrated by the abundance of ButtKickers and Crowsons and the like, there has not been a good way to measure it quantitatively. The VibSensor app is a big step in the right direction, but it has its limitations (https://www.avsforum.com/forum/113-s...st-thread.html
Thanks to the groundbreaking work of our own @3113d00d, such measurements are now available with relative ease and at relatively minor cost. This isn't a "build thread" per se, since the pieces just plug together, and the "programming" is straight-forward, so the process is fairly painless. You do need access to a wireless network.
Mac users should use the Terminal app in the Utilities folder everywhere the PC folks will use PuTTY.
Apologies to Matt for the American English spelling of "Analyzer."
Start with a Raspberry Pi Zero WH for $14.00
add an HDMI adapter and a USB adapter for setup (you don't need them afterwards) for $2.95 and $2.50
[You can try a "headless" setup without the keyboard and monitor]
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The motion sensor is an MPU-6050. If you don't mind soldering a header to the board, you can find it elsewhere and save some money. If, however, a soldering iron is a lethal weapon in your hands, as it is in mine, get one of these:
As you might expect, it is probably available for less elsewhere:
This is the female to female
i2c cable that connects the Pi to the 6050. You need four of them (four cables, not four sets of 40, but they're usually sold in bulk packs. If you can find fewer, go for it):
If you have a cell phone or tablet, you probably already have a 5V 1A microUSB power supply. If not, adafruit's is overkill (and we do love overkill):
You need a microSD card of between 8GB and 32GB.
Don't bother with a case.
And you need access to a USB keyboard and HDMI monitor (or the appropriate adapter for VGA or your monitor) for setup. That's it.
Now you can follow Matt's guide. This write-up is just meant to be a Dummies/Reader's Digest/cookbook version of his excellent work originally for vibe, the predecessor of qvibe.
If you can, copy/paste any programming that needs to be done. Otherwise, be VERY careful about every space and punctuation mark.
The first step is to format the microSD card. The proper way to do that is with a free utility from the SD Association:
Rather than install NOOBS and use NOOBS to install Raspbian, just download the Raspbian zip archive. If you select the "Lite"version, you don't get the GUI, which is helpful for us Dummies:
unzip it; use this program to "flash" Raspbian to your microSD card:
Both programs are available for the Mac platform.
Insert the microSD card into the Pi. Connect a keyboard and monitor. Connect the power supply LAST; there is no on/off switch on the board.
Your Pi will boot into a welcome screen,
and a setup wizard will help you with the initial settings and connecting to your network.
Navigate with the tab and arrow keys, select with the space bar. When it asks about black bars around the desktop, it means BIG black bars, so don't change the overscan unless you have a real problem. When you get to the option to update, SAY "SKIP". You'll do that later.