@NeverDie said in The Harvester: ultimate power supply for the Raybeacon DK:
Edit: This guy found another couple of possibilities as to what the E50D chip might be: https://www.electroschematics.com/pfm-module-circuit-surgery/
I have the same board as this guy. I removed the LED and resistor because they are on the input side, so they are almost useless anyway. For a board such as this, with a promised 0.9v startup voltage on the input side and a promised 5v on the output side, they really should have been attached to the output, not the input, to show roughly when it is that the board is producing useable output.
At a 20mv "keep alive" input voltage, the input measures 0.5ma using a uCurrent Gold. That means the keep alive energy is 10 microWatts. Offhand, for the application we've been discussing on this thread, I suspect that number is too high to be practically useful, because at only 20mv input we'd be collecting far less than 0.5ma current from a tiny panel. At least now we know.
@m26872 said in Encapsulated transformers instead of traditional switching power supplies like Hi-Link:
for me the sunny season is too short.
I havn't yet tried to use solar batteries in winter so maybe I have the same problems (despite the fact that I'm living 3 degrees south of you), but I have backup solution for very cloudy winter days - regular battery charger.
@ceech
I really like this design, however I think it has a problem:
According to the datasheet the TPS610986DSET has no feature to disconnect the load at low battery voltages. I think the result will be that e.g. a ESP32 or other power hungry chips will not power up properly. The TPS63031 might therefore be a better fit.
btw.: Do you still sell assembled versions of this design? Would you be willing to create a new version with the TPS63031 and probably also with 10 or 20F capacitors or an board to solder your own capacitors.
Best regards
Tobias
@ozrex,
I don't want to assume your knowledge level. However the truth is that you will probably need to put together different bits and pieces from various threads in order to come up with your own custom solution (the A/C interface (IR) part, the battery part, etc...).
Maybe it is worth it to create your own new thread, or maybe you want to keep researching / trying on your own a little longer first. The latter is admirable, and is the way I usually do it, too. Some times to a fault in my own case. Don't suffer along in silence if you are struggling to find the information, make a thread instead. If it becomes too difficult you may give up. We all need some small successes along the way to keep motivated and keep it fun.
Probably best to create a new thread (I don't want to derail this one too much) but something you might want to look into is OpenMQTTGateway. I use it for my 433mhz, but it also supports RF, BLE, LoRa (and perhaps others in future) all on the same gateway! To me that was the way to go... And so far has been flawless for me.
