Although 8051-compatible microcontrollers with SPI ports are available, a lower-cost device with an SPI port bit-banged through GPIO pins often suffices. The code shown here takes advantage of ...

We covered SparkFun’s new RGB button pad controller a few weeks ago. This is a full-color clone of the monome interface; a 4×4 grid of buttons with tri-color LEDs underneath. Each LED has 24bits of ...

For certain applications, the use of a low-cost microcontroller (MCU) is a must, yet many of those applications need to interface with high data rate signals. The problem is that as the data rate of ...

Voltage-to-current converters that feed grounded loads are common in industrial measurement and control applications. The conventional "textbook" circuit uses both positive and negative supply rails.

Every Batman needs a Robin, right? Maybe not, but a superhero companion comes in handy on occasion, and not just in comic books. The Raspberry Pi Foundation today announced a small and super ...

8032-based microcontroller has 40-MHz clock and 9-MIPS performance with support for 10 endpoint pairs of USB 2.0 at full-speed (12 Mbits/s); features dual independent banks of flash memory, 8 Kbytes ...