This odd arrangement was possibly because the existing Arduino Ethernet and WiFi shields were ... with the Dragino HE module being the most difficult part to source.

If you are designing your own intelligent “Graden Computer” with an optional digital plant moisture sensor/water pump controller that lights an LED to alert the user when it is time to water a potted ...

As stated, the circuity can be used to send calibrated pulses to a microcontroller-based tacho meter or similar circuit/device ... After construction and pre-flight test, the module was connected to ...

We’ve said it time and again, the Arduino is a prototyping platform. In that spirit, [Doug Jackson] shows you how to conserve the expensive Arduino board and Ethernet shield by building your own ...