But it’s not that good. I put it up because it’s so small and nicer looking than the others I have. It doesn’t balance quickly either and will shut off from overheat. I wish someone would make a better one. Or link me again to a guide to making one. Simple circuit I’m pretty sure
Just to let the Germans know:
I bought the Drok in the current (I think only valid for today) 20%-off Amazon warehouse deals special.
Cost me 17€ including shipping.
@DeathCookies: if you have not already ordered now is the time
Also I contacted Modiary to get an estimate on their 4A charger. Is there any interest? Then it might make sense to order a couple instead of just one.
The modiary 4A charger with endvoltage set to 41V can be bought for 23USD. However shipping is 25USD for one or 31 for two. Does anyone want to share an order?
Please keep in mind that these prices are without european VAT and also without that hefty 12€ DHL express fee.
In a worst case scenario it would look something like this:
Fo two people without forward postage:
(2x23USD+31USD)*1.19+12EUR=98 or 49EUR per person plus postage
For three:
(3x23USD+31USD)*1.19+12EUR=124EUR or 41EUR per person plus postage
Edit: European shipping is expensive - wow I did not know.
DHL charges between 8.89€ (no tracking, no insurance) up to 11.09€ (tracking and 50€ insurance). Hermes charges 9.79€.
That’s the right question.
The psu will output 250 watts w/o active cooling and 400 @ 25 cfm
I was thinking about keeping it under 300 watts and see how hot it gets with a quiet fan. But it should push 42v 8a or 50v 7a safely
That would be more than 300W out of the Drok - be careful and also check your mosfet and diode. Some folks on endless-sphere said that they are way underspecced and different parts are used on individual Droks (basically they use whatever cheap leftover parts they can find).
https://endless-sphere.com/forums/viewtopic.php?f=14&t=82731&start=0
Nice box… I assume you’ve got quite a good 3d printer print area but I think you could improve even further… find some pushbutton caps and add a little glass / acrylic… this way it will look even more professional and finished
Though, all is up to you… Would probably leave it the way it is, if it was mine unless something were falling out or debris / dust would accumulate too much through the openings…
What’s the practical benefit of getting something like this instead of just a power supply at your battery’s voltage? I won’t change my voltage in or out and now use a meanwell power supply that does 400 watts at 50 volts, am I missing out without this? Does this have an integrated power supply?
I put a DROK together with a small meanwell 65W power supply in a 3D printed case. This gives me a cheap (~30€) 41V 1.5A charger plus the freedom to change end-voltage to whatever I want - also it is fun and feels like DIY.