I've just been testing a design that includes 8 hybrid (ie mixed analogue and digital) lock in amplifiers. They aren't, strictly speaking, lock in amps because they are synchronised to an internally generated signal which dives a laser. There...
We see lots of questions on E14 about energy harvesting. This link is to a nice article from Analog Devices, mainly about using once of their chips for very low power solar cell applications, but the article make some interesting background poin...
I've spent most of this weekend (about 14 hours of it) soldering 3 of these. It's an industrial 24V IO board for a client with Ethernet interface. 14 of the pins are programmable input, output, pull up/down, adjustable thresholds etc. I'v...
This is my Ethernet switch board with 3 port Micrel switch, STM32F427 processor, real time clock and LCD display. (Totally open source hardware - copy as much as you like - I will publish Gerbers and other stuff on 26/09/2015) If you want ...
