The button states could easily be read by using an Arduino’s analog input. A Pro Mini model was chosen for its small size as it could be housed in the radio compartment of the dash.

Control is via an Arduino Nano, with a few push buttons and a 16 x 2 LCD display for user feedback. Often, completing a first build will reveal all manner of limitations and drawbacks of a design.

LS7191 debounced up and down push buttons, and SPI; LS7192 up clock and down clock from GPIO, and SPI; LS7193 debounced incremental encoder quadrature; LS7194 debounced up and down push buttons; ...

Evidence of a larger push for simple, instant flashing to microcontrollers without an installed IDE can also be found in the Tessel, a Wi-Fi-enabled board that has made twice its crowdfunding goal ...