grid and arc basic setup

install serialosc

serialosc runs in the background and converts serial communication (over USB) into OSC.
applications can query serialosc to connect to the grid and arc.

install via homebrew

recommended for M1 + M2 CPUs!

nb. If you have installed serialosc on this device via the direct download method below, please make sure to locate and delete any existing install (and reboot) to ensure it is no longer running before installing via homebrew.

install homebrew on your Mac (or Linux) computer
execute brew install serialosc to install serialosc
execute brew services start serialosc to start serialosc
execute brew services list to confirm serialosc is running

successful brew services list output looks like:

Name        Status    User     File
serialosc   started   <you>   ~/Library/LaunchAgents/homebrew.mxcl.serialosc.plist

install via direct download

→ download serialosc (be sure to restart your device afterward)

additional docs

linux setup guide

raspbian setup guide

technical:

grid serial references
osc references

troubleshooting

This section assume two things are true:

your grid/arc is displaying a light burst when you plug it into your computer, which means its receiving power over USB
- if your grid/arc is not displaying a light burst when you plug it into your computer, then the unit is not receiving power – please try another cable and/or USB port
your grid/arc is simply not visible in any apps designed to connect with it, eg. the ‘Grid’ section of Mark Eats Sequencer’s preferences or the dropdown menu in the Max test patchers
- if your grid/arc is visible to these applications and is successfully connecting but perhaps MIDI out from these applications isn’t working the way you expect, then you do not need to perform any of the steps in this section – instead, please consult MIDI routing documentation for those environments

macOS

On your Mac, open Activity Monitor and search serialosc. you should see entries for both serialosc-detector and serialoscd. if you do not, then serialosc is not installed.
Once you confirm serialosc is installed, please connect your grid/arc and open Terminal.
- execute ls -lrt /dev/tty.usb*
- if you get ls: /dev/tty.usb*: No such file or directory back, then your grid/arc is not connecting and you should try a different USB cable.
- successful responses will look like:
  - crw-rw-rw- 1 root wheel 20, 6 Nov 8 08:08 /dev/tty.usbserial-m1100368
  - crw-rw-rw- 1 root wheel 9, 4 Oct 28 09:54 /dev/tty.usbmodemm44094551

If you are running macOS 10.14 or earlier, then there are some additional troubleshooting steps to pursue:

In Terminal, confirm that you do not have any conflicting FTDI drivers installed:
- execute ls /System/Library/Extensions | grep FTDI
- you should only get AppleUSBFTDI.kext back.
- if you get FTDIKext.kext back, it needs to be uninstalled:
```
 cd /System/Library/Extensions
 rm -r FTDIUSBSerialDriver.kext
 cd /Library/Receipts
 rm -r FTDIUSBSerialDriver.kext
```
Now, reboot and try step 2 again. if things are still not working, open Terminal and execute:
```
 launchctl unload /Library/LaunchAgents/org.monome.serialosc.plist
 launchctl load /Library/LaunchAgents/org.monome.serialosc.plist
```
In Max, open either grid-test.maxpat or arc-test.maxpat (depending on the monome device). if you can’t find the patchers, use CMD+B to open Max’s file browser and search either package:monome grid-test.maxpat or package:monome arc-test.maxpat. plug in your grid/arc and you should see your grid/arc connect automatically!

still not working?

Do you have TouchOSC Bridge or TouchOSC Editor installed? Try removing them and installing the latest versions. You should be able to run both TouchOSC and serialosc, but we’ve found that reinstalling the TouchOSC software is necessary in some situations.

Do you have any Wacom drivers installed? Please follow these removal steps, as we’ve found that these drivers can block serialosc.

Then (or first, if you don’t have TouchOSC or Wacom drivers installed) try the “uninstalling d2xx drivers” steps from page 18 of this guide and try installing the FTDI driver manually.

If you’ve reached this point and things still aren’t working, please contact help@monome.org with screenshots of what you see in steps 1-4, what you see in the Max console (CMD+B), and your Mac’s OS version.

Windows 10

If your grid or arc is not being detected when you plug into your Windows machine (but it is showing the light burst indicating its receiving power over USB), here are a few things to try.

If you don’t have iTunes installed on your device, you might be missing Bonjour, which Max uses to communicate with OSC and networked devices. To remedy, please install Bonjour Print Services.
The beta version of serialosc 1.4.1 might improve connectivity.
Try starting serialosc manually from the Services program. If you see Error 1075, you might need to tweak your registry.
You may need to manually install the FTDI VCP driver, which you get get here.