YourITronics explains the TSP54232 constant current source and uses it to power a bunch of LEDs.
Category Archives: parts
LM317 constant current source
YourITronics has a how-to on LM317 variable voltage regulators. Florin covers the project from start to finish – designing the circuit, etching the board, and stuffing the parts.
Akihabara: Tokyo electronics markets
Follow two hackers through Akihabara, a huge maze of electronics markets in Tokyo. Via Make, tips line.
USB to serial adapter in DB9 footprint
There aren’t many simple ways to add a USB interface to a project using only through-hole parts. This USB-serial adapter from FTDI has the same shape and pinout as a through-hole serial connector. It’s a little pricey (~$22), a USB->serial cable is usually cheaper, but it’s a nice option for a professional-looking USB device without […]
Choosing a substitute electronic part
Choosing substitute electronic components is a common snag for beginners. What do you do if you can’t get the exact part used in a project? Part finder posed this question about the USB IR Toy: This component is hard to find from my local store: D1, Small signal diode (DO323, BAS16HT1G, Rectifier 85V/0.2A Small Signal […]