Post by Snappersforum on Sept 5, 2014 10:50:54 GMT
The original article is here, in German: Selbstbau Projekt: Externe 12V Stromversorgung für Nikon und Canon | gwegner.de
Start with the pre-assembled DC power cable so you can plug in your 12V power supply to the adapter.
Solder the other end of the cable to the voltage converter to the end where the "IN" is written. Pay attention to correct polarity ±
-2013-02-16_125151_g71_0135.jpg
Now connect to the 12V supply and turn it on.
Measure now at the other side of the voltage transformer (OUT) of the voltage with the multimeter. At the beginning it is usually 12V.
-2013-02-16_140755_g71_0136.jpg
Turn the screw with a screwdriver while you measure (alligator clips help) the voltage on the converter until the desired target voltage is reached. The EN-EL15 is this about 7.3 volts, the EM-EL14 approximately 7.4 volts. You should pre-measure the voltage with your camera battery as a reference
Now cuts the cable of the EP-5B or EB-5A by both sides Isolated slightly, and the two inner strands.
Soldering the two red strands now to the positive terminal on the OUT side of the voltage transformer and the two black wires to the negative terminal. If you want to play it safe, even soldered a nimble 2A Miniature fuse in series with the positive terminal.
If you want to use the AC power connector later you can solder on the adapter. Otherwise you can also omit it and just solder on the battery adapter.
Ready for a first test:
Now even in the case INSTALLATION (VT with hot glue fix) and and go out, take time lapse!
As a battery can you eg to use this battery :
-
I use it still, but since the solar disk anyway does not always work, I now also have the variant without solar with the same power in use.
Have fun reverse engineering!
Update: my esteemed readers and workshop participants Kadus John Kremer has taken the trouble, with his lab power supply by attach all times. Here is his result:
D800 is turned on and standby mode: 0.03 Amps
Shutter actuated pressure point: 0.23 Amps
Long time 30 seconds: 0.33 Amps
Continuous firing 6 frames per second: 1.45 amps (current peaks ~ 2.5 Ampere)
Live View on and standby modes: 0.59 Amps
Aperture in Live View adjusted: 0.9 Ampere
Pressed on Live View and Movie start: Maybe for the video interesting fraction 0.61 amps
Read more: nikonites.com/general-digital-slr-cameras/25336-powering-your-nikon-dslr-sun.html#ixzz3CRAUXm3a
Read more: nikonites.com/general-digital-slr-cameras/25336-powering-your-nikon-dslr-sun.html#ixzz3CRAGl3YM
Read more: nikonites.com/general-digital-slr-cameras/25336-powering-your-nikon-dslr-sun.html#ixzz3CR8zEdXC
Read more: nikonites.com/general-digital-slr-cameras/25336-powering-your-nikon-dslr-sun.html#ixzz3CR8T2zVX
An EP-5B battery adapter (for a D7100, D7000, D800 or D600/D610) or EP-5A battery adapter (for a D5200, D5100, D3100, D3200, V1).
A LM2596 voltage converter (note that this one is slightly different from the one pictured and has a lcd readout of the voltage)
A small plastic housing, for example here or here
A matching connector to your 12V connector, eg a 5.5/2.1 DC jack (this may be easier to get at your local Radio Shack)
Some 2-core wire
A multimeter
A soldering iron and a bit of soldering experience
A 12V power supply, I recommend the XTPower Power Banks, for example, with 23000 mAh.
A LM2596 voltage converter (note that this one is slightly different from the one pictured and has a lcd readout of the voltage)
A small plastic housing, for example here or here
A matching connector to your 12V connector, eg a 5.5/2.1 DC jack (this may be easier to get at your local Radio Shack)
Some 2-core wire
A multimeter
A soldering iron and a bit of soldering experience
A 12V power supply, I recommend the XTPower Power Banks, for example, with 23000 mAh.
Start with the pre-assembled DC power cable so you can plug in your 12V power supply to the adapter.
Solder the other end of the cable to the voltage converter to the end where the "IN" is written. Pay attention to correct polarity ±
-2013-02-16_125151_g71_0135.jpg
Now connect to the 12V supply and turn it on.
Measure now at the other side of the voltage transformer (OUT) of the voltage with the multimeter. At the beginning it is usually 12V.
-2013-02-16_140755_g71_0136.jpg
Turn the screw with a screwdriver while you measure (alligator clips help) the voltage on the converter until the desired target voltage is reached. The EN-EL15 is this about 7.3 volts, the EM-EL14 approximately 7.4 volts. You should pre-measure the voltage with your camera battery as a reference
Now cuts the cable of the EP-5B or EB-5A by both sides Isolated slightly, and the two inner strands.
Soldering the two red strands now to the positive terminal on the OUT side of the voltage transformer and the two black wires to the negative terminal. If you want to play it safe, even soldered a nimble 2A Miniature fuse in series with the positive terminal.
If you want to use the AC power connector later you can solder on the adapter. Otherwise you can also omit it and just solder on the battery adapter.
Ready for a first test:
Now even in the case INSTALLATION (VT with hot glue fix) and and go out, take time lapse!
As a battery can you eg to use this battery :
-
I use it still, but since the solar disk anyway does not always work, I now also have the variant without solar with the same power in use.
Have fun reverse engineering!
Update: my esteemed readers and workshop participants Kadus John Kremer has taken the trouble, with his lab power supply by attach all times. Here is his result:
D800 is turned on and standby mode: 0.03 Amps
Shutter actuated pressure point: 0.23 Amps
Long time 30 seconds: 0.33 Amps
Continuous firing 6 frames per second: 1.45 amps (current peaks ~ 2.5 Ampere)
Live View on and standby modes: 0.59 Amps
Aperture in Live View adjusted: 0.9 Ampere
Pressed on Live View and Movie start: Maybe for the video interesting fraction 0.61 amps
Read more: nikonites.com/general-digital-slr-cameras/25336-powering-your-nikon-dslr-sun.html#ixzz3CRAUXm3a
Read more: nikonites.com/general-digital-slr-cameras/25336-powering-your-nikon-dslr-sun.html#ixzz3CRAGl3YM
Read more: nikonites.com/general-digital-slr-cameras/25336-powering-your-nikon-dslr-sun.html#ixzz3CR8zEdXC
Read more: nikonites.com/general-digital-slr-cameras/25336-powering-your-nikon-dslr-sun.html#ixzz3CR8T2zVX