Collaborate Disseminate
By now, 3.3V has become a comfortable and common logic level for basically anything you might be hacking. However, sometimes, you still need to interface your GPIOs with devices that …read more Continue reading When Your Level Shifter Is Too Smart To Function
If you have ever had to fix a modern desktop motherboard, you might have noticed that the BIOS (UEFI) SPI flash is 1.8V – which means you can no longer …read more Continue reading Motherboard Revived With Simplest 1.8V SPI Shifter Ever
Last time, we’ve looked over FET basics, details, nuances and caveats. Basics aren’t all there is to FETs, however – let’s go through real-world uses, in all their wonderful variety! …read more Continue reading FET: Fun Endeavors Together
Buried deep within all UNIX-based operating systems are vestiges of the earliest days of computing, when “hardware” more often than not meant actual mechanical devices with cams and levers and pulleys and grease. But just because UNIX, and by extension Linux, once supported mechanical terminals doesn’t mean that getting a …read more
If your introduction to digital electronics came more years ago than you’d care to mention, the chances are you did so with 5V TTL logic. Above 2V but usually pretty close to 5V is a logic 1, below 0.8V is a logic 0. If you were a keen reader of electronic text books you might have read about different voltage levels tolerated by 4000 series CMOS gates, but the chances are even with them you’d have still used the familiar 5 volts.
This happy state of never encountering anything but 5V logic as a hobbyist has not persisted. In recent …read more
Continue reading Taking It To Another Level: Making 3.3V Speak with 5V