While searching around for regulators to convert my new scope to 12v power, I remembered I had some DC-DC modules from Texas Instruments that I’d got a while ago. Luckily a couple of these are inverting controllers, that will go down to -15v DC at 15W/3A capacity. I’ve had to
This is an old USB 1.1 hub that was recently retired from service on some servers. Top of the unit visible here. Bottom label shows that this is a model F5U021 hub, a rather old unit. PCB is here removed from the casing, Indicator LEDs along the bottom edge of
This is a device designed to reset Epson brand ink cartridges that are reportedly out of ink, so they again report full to the printer Here is the front of the unit, with the guide for attaching to a cartridge. Back of the device removed. 3 button cells provide power