I just have one constructive feedback on the plant physiology side of things. If your able, you should really incorporate EC/CF control. Although pH controls nutrient uptake, nutrient availability is equally important. EC is a great tool for controlling, among others, such things as internode stretching, hardiness and taste. You can also control visual aspects such as cracking/splitting with EC control (particularly important with tomatoes). I think you'll have better control of plant size, especially during seasonal changes (i.e. winter vs summer ).
I already measure the EC value but for now with a pen instead of using the controller. I couldn't find a good priced EC module to put in the controller...
EC control is very important, I know. To high and the plants don't grow well and to low and the same happens. For my peppers I let the EC value swing from 1.8 to 2.4 depending on the weather conditions.
In the new controller EC measurement will be incorporated. But as stated earlier I'm still learning how to use Eagle, so making the new board will have to wait until I and my finances are ready to do so
Hi Billie, now that it's setup, the issues begin
Regarding the LDR in you sketch you have int lightSensor = 60; I can't get any readings on light (it's only bouncing between 24,25,26) no matter the actual light condition. I know the LDR works because if I set the lightsensor to pin 14 it gives me a range 250~32000 (32000 with the phone led flash next to the ldr). Any hints?
Maybe there's a problem with your A4 pin..?? Do you mean you use A14 = 68? If so then use that pin
Also would love to know if you have any newer version as this is already a couple months old and you probably have tweaked it already for some issues encountered along the way.
Nope, no new version to be tested until this season is over. I don't want to risk my harvest by overdosing at the moment. This winter I'll be recoding the device to suit the new hardware (EC, new screen, ethernet module).
I'm going to kickstart my NFT test project
With kind regards,