I knew that the Raspberry Pi 3 drew more power but it seems to be unstable with this particular charger. That’s not to say the charger is at fault, it’s running 6 other Raspberry Pis quite happily but they are older models and I don’t think the ports supply the required current. I’m ordering a 5v 2.5A power supply to see if that resolves the issue.
The WiFi chip needs to have power management disabled to get it to be responsive. To do that, you can create a file /etc/modprobe.d/8192cu.conf and add the following:
options 8192cu rtw_power_mgnt=0 rtw_enusbss=0
I’m not certain this is addressing my immediate problem but once I get a more powerful power supply, I’ll be able to check.
Thanks to a comment from one of my Facebook “friends”, who suggested I etch the name of each host name into the plastic plate on my Pi rack, I found a project for a Raspberry Pi controlled CNC laser etcher.
Someone tweaked the project and put together a video showing how his contraption works:
Thanks to Bryan, I got a couple of old DVD-RW drives and took them apart for the stepper motors.
The project suggests that the laser diodes in the DVD drives can be salvaged but the manufacturers of *these* drives saw fit to encase them in concrete and diamond dust so there’s no way to get them out cleanly.
What’s next is to wait for my eBay purchases to show up and I can start on the stepper motor drivers. I know I can buy them fully-assembled but there’s no fun in just clipping it all together, is there?