Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Your Plants Won’t Get Thirst Anymore

If you a gardening lover, you must be annoy that it is hard to tell, whether the ground of the flowerpot is running out of water or not. However, with the help of this CMOS quad Schmitt, you can easily detect the flowerpot condition just in a second.


First, you need to have these components ready:

  • 470k 0.33W Carbon Film Resistors
  • 50k 10mm Cermet Trimmer
  • 100k 0.33W Carbon Film Resistor
  • 3k3 0.33W Carbon Film Resistor
  • 15k 0.33W Carbon Film Resistor
  • 100R 0.33W Carbon Film Resistor
  • 1nF 100V Polyester Capacitor
  • 330nF 250V Polyester Capacitor
  • 10μF 50V Electrolytic Capacitors
  • 1N4148 75V 150mA Diode
  • 5mm red LED
  • 4093 Quad 2 input Schmitt NAND Gate IC
  • BC557 45V 100mA PNP Transistor
  • 1.5V N Alkaline batteries
  • Black ABS potting box w/lid,64x43x25mm
  • PCB mount holders for 1xN cell

Finally, you have set up a sophisticated yet stylish plant-watering watcher. The great thing is your plant will not get thirst in the future anymore! [link]

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