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Starting a garden, what should I grow? (Favorite seeds, etc?)(

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--- Quote ---I am wonderng what kind of electrically activated valves to use. For watering. As it seems that is the first place to start as far as involving electronics. At least to keep seedlings from dying if we forget to water something.
--- End quote ---

I followed an Indiegogo campaign for an automatic plant water: http://daisy.si/

It worked well enough that my partner (who has the green fingers around here) actually asked me to get another one, despite the cost. (Although since I was paying I'm not sure her natural aversion to letting go of money kicked in.)

Green Fingers!  what a great expression..

This is Siouxsie and the Banshees, from a great 1980s album..

Here is a water-saving passive radar idea..

Just for future reference, one can determine how much water is in soil by comparing the reflected signal from GPS satellites by polarization. Reflection will reverse the polarization. Two good circular polarized directional antennas will allow you to ascertain  which earth in a fairly large area is damp, and which is dy by the ratio. One could use two conical log spirals of identical size on a tower to cover a fairly large plot. And possibly save a lot of water. Modern dromes can use RTKlib for precise drone positioning and carry a moisture sensor over a considerable area. The presence of precisely located GNSS signals lends itself to a system to conserve water 's automation. Clearly this is an idea whose time has come because of the maturing on several relevant technologies and their sudden low cost due to mass production.

Receiver could be stationary on a tower or carried by a drone. (would have to be designed to be light, I have an antenna that would work for this, it is made around a cheap styrofoam cone.

There is a marked difference between the ratio of LHCP and RHCP that depends utterly on the water in the soil.

One will need a well made dual polarization conical log spiral antenna such as the one described by Dyson. It should be made by wrapping a floral art cone with the right copper shapes as described by Dyson. One needs to overlay four windings two in the LHCP two in the RHCP direction. This makes a very useful antenna for a number of applications. Due to the phase center of both antennas being nearly identical. Such an antenna would be useful for ground penetrating radar as well, which this idea kind of is.. a poor mans ground penetrating passive radar based on the free GNSS signals.

Antenna looks like a pointy barber pole, a bit. Its fed from the front tip which is the area of directionality. It functions like an LPDA except its circular. Such an antenna was made once by the University of Illinois's famous ECE department.
Since one knows quite precisely where the GPS satellites are, (the signal source to be reflected) - A log spiral is an ideal GNSS antenna. In fact the GPS satellites own antennas are conical log spirals.

Reflections from well-hydrated soil will predominate more and more LHCP.  I will have to hunt the reference down, this was the subject of a paper in the GNSS literature from some years ago.

Could be useful in saving lots of water, I bet.

I'm sure that would be fantastic on a farm, but perhaps just a little over the top for a vegetable patch :)

Brandywine tomatoes
Brandywine tomatoes
Brandywine tomatoes

Best tomatoes I have ever tasted. You should be able to source starter plants soon according to our pcb designer who got us hooked on these puppies.

My wife just got clay pebbles for growing stuff and everything she has grown using them (so far basil and radish) looks really healthy and big. They are porous and suck up nutrient-laden water through capillary action, it seems. They look ideal for tomatoes!   Mmmmm!


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