Feeling discouraged this evening. Yesterday evening I completed the brain build and conducted a power on test. Everything seemed in order, and I was pleasantly startled when about thirty seconds after boot the exhaust fan was started.
Everything was ready to go…
…so I started my first crop, with some variations and notes so that I could begin to determine what worked better.
But then it began to rain on my parade. After a few hours, I realized the exhaust fan was on when the temp was around 25C (I believe 30C was the programmed value and is closer to the recommended temperature), verified by two additional thermometers. I was also not getting current log data by using the network IP and port 8000; it was still the placeholder data and photo.
I don’t know if the subroutine for the lights is working; the time didn’t update on boot, so I’m not sure when the lights are supposed to be off to verify if that function is working properly.
So thinking first things first, I thought I’d simply change the settings on the temperature control routine, set it a few degrees higher. I powered down, took out the SD card, and inserted it into my spare Raspberry in my upstairs project room to make the changes. And no video. Again. I carried the monitor and peripherals to the basement and tried it there with the Raspberry operating the MVP. And no video.
I’m considering putting a simple mechanical timer on the lights. The temperature seems to top at around 28.1C currently without the exhaust fan running (I need to reseal the enclosure), and I can deal with that issue later. The main problem is that without the logging and photo data of the Raspberry, I won’t have easy and consistent data if I want to share results with others.
Here’s the only working theory I have at the moment. The 16GB card that has Stretch installed that I’m basically using as a comparison base is an older, slower, bargain priced card. Both of the 32GB cards that have caused video issues have been the high-speed read/write cards. I’ve tried numerous variables; the only thing I can think of now is maybe it’s the architecture of the high-speed cards causing some issue.
Has anyone else had this issue? Your thoughts on this would be appreciated. In the meantime, my seeds are soaking in their rock wool dampened nutrient under bright lights.