via raspberrypi/linux#884:

Use the upstream dwc2 driver in gadget mode - this in theory “should work” but hasn’t really been tested in device mode. The hardware is similar to the type underneath the s3c_hsotg driver in upstream and there is an ongoing effort to consolidate both codebases. This would be the ideal solution if you just require device mode.

Other useful threads:

• dwc_otg can’t coexist with other USB drivers raspberrypi/linux#881
• RPi zero Support for USB Gadget Mode (pi shows up as keyboard, disk, net, camera etc) raspberrypi/linux#1212

Here are the steps I used to setup a new Let’s Encrypt certificate for nginx running on a Debian EC2 instance.

While quietly rolling out the public beta of Adafruit IO, we noticed some CPU spikes in our Node.js processes that handle MQTT. We currently use a slightly modified version of Mosca by @mcollina as our MQTT broker. It is a very solid package, but we seemed to be pushing the limits of Mosca’s Redis persistence module.