MAX7219 CWG 8-digit LED Display

In anticipation of the 2015 Leap-secondBP_LED_23_59_60_9049, I’m in the process of constructing a monitor for my Trimble Thunderbolt GPS clock and DO so I can watch it “live”. For the clock display, I’m evaluating an inexpensive  8-digit LED display with an SPI (mostly) interface from a MAX7219 (bought on-line for $2.35).

For a quick and easy test, a Bus Pirate is just the trick. Continue reading MAX7219 CWG 8-digit LED Display