Why did I order twenty 555 bipolar timers? Because they were $5.97 with free shipping. Now what do I do with them? Monostable mode: in this mode, the 555 functions as a “one-shot”. Applications include timers, missing pulse detection, bounce
Yes, it’s another barebones Arduino, but the additional prototyping space makes it a unique and very handy board to have. The Atmega328 is socketed, so if you do something crazy, you are back in business for under $5. At a
Would you like a complete 2m / 1.25m / 70cm ham radio that connects like a shield to an Arduino? Can be used with a Raspberry Pi as well. Onboard Lipo charger / controller also powers your Arduino. Make your
The Arduino Uno has 6 analog inputs, designed for measuring a voltage. Other versions of the Arduino can have several more. Voltages are analog, meaning they can have a range of values, versus digital, which only has two, on or
Current shunts are very popular with the Ham Radio, boating, electric vehicle and solar / wind off grid folks, as they allow them to monitor solar and wind power production, power consumption of devices, and the estimated amp hours left
Bosch has a new, very accurate all in one sensor chip that does Temperature, Humidity, and Barometric Pressure readings. It’s called the BME280. Embedded Adventures has put that chip on a handy breakout board with signal conditioning (MOD-1022) and priced
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