Well, I have finished the Green House controller..a few small added items will be done later but on to bigger and better things..like this LPF now on the HF amp..yikes. Its giving folks the fits…will see if I can contribute in some way to it..
of course i’ll sell these if anyone is interested!!!
Good evening. well, got this going on still and of course the job hunt. Not a lot in the way of my work out there yet, but more will pop up soon. I have changed a few things on linked in and my resume and broadened the search…thats all I can do at this point. In the meantime I continue to add onto the graphics for the TFT display I have here for the Green House Controller. GHC-1
Most everything working, in a few weeks will hookup the electronics to complete it. Proto underway!!
so seems there is a lot of work going on , on the filter board..we will have to rip it out and update it after a few of the other guys figure out exactly what needs to be done..the one we picked up as a kit was just a prototype I guess and really didn’t work correctly. In the meantime its been snowing and I have been working on this Greenhouse controller….stay tuned. thanks..
Been busy, being laid off is work…looking for work, working on getting stuff to sell, all that, yea. then there is the cold, its been real chilly to the point I don’t wanna go out lol, so I sit here working on GLCD and TFT code, least I am still learning…I switched over to bar graphs with tick marks versus the gauge look, that’s old school. Il’l post it when I am finished and you guys can comment on the layout. the whole controller should be worth something LOL
I spent the day laying out some new PCB for a Greenhouse system, I will try to market and maybe make some MONEY like a real job i’ll try to update on here for that too..!
Added this to my design, going to use a 7″ tft, wrote some code last few days…!
The 50v disable board going into the brick, the controller board has a line directly to this to shut down for whatever reason, right now just high SWR, but the mica insulator behind it, or the shoulder washer didn’t like to stay insulated from ground. I suspect moving things around too much and the stiff wire going to the brick. after replacing this I put a fuse inline. It didn’t help those FETs today 🙁 and there was no error to disable. I need to make a high speed pulse detector to stop the power if it encounters an EMP lol
Well, the brick cooked 2 more FETs today, who knows. Power supply interference maybe I don’t know . also an input filter cap popped along the way, due to? cause of? who knows but i am looking at a better RF choke on the power supply line coming right into the amp. This pic shows whats there and what popped, it cooked a cap into pieces and there is only supposed to be 50vdc on it and no RF. well, I think maybe there is a ton of RF on it over 14mhz..so tomorrow I’ll try that direction. FETs replaced and re-biased. its working again but i’m not running it over ~50 out until I figure out how the smoke is getting out of these……FETs!!! I cleaned the board up, installed some 3.1kv .01 and a 6kv .001 cap in there. if that pops there is some serious shit going on in there!!!
snap! Crackle POPferrite beads around the power lines coming in..maybe not helping?
found out the caps they had in the kit were under rated. ah HA! a gotchya….
Here is the schematic I went by for the amp itself. the Designers are listed on the bottom.