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Turnigy_4000mAh_Spektrum_DX8_Intelligent_Transmitter_Pack [message #15] Fri, 20 September 2013 17:16 Go to next message
badger is currently offline  badger
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Registered: September 2013
Location: Prague, CZ
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I have this battery (with built in electronics protecting it agains over charge/discharge) at home:
http://www.hobbyking.com/hobbyking/store/__19481__Turnigy_40 00mAh_Spektrum_DX8_Intelligent_Transmitter_Pack_.html
... and it fits in the printer:
http://jezevcinora.cz/gallery/gallery/mPrinter/130920/small/ 120920_01.jpg

Thus.. the only remaining question is how to connect it to the mprinter and if anything more needs to be added.
As far as I remember Andy talked about some charging cirquitery in the printer, but I don't remember whether it's already in the printer or needs to be added.
Seems like I'll need to do a deeper "reverse engineering" of the hardware.


[Updated on: Fri, 20 September 2013 17:16]

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Re: Turnigy_4000mAh_Spektrum_DX8_Intelligent_Transmitter_Pack [message #21 is a reply to message #15] Mon, 30 September 2013 23:47 Go to previous messageGo to next message
AnMartini is currently offline  AnMartini
Messages: 13
Registered: September 2013
Location: Bologna, Italy
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Hi, I bought my mPrinter on the website in March and then I added the optional battery. I received my mPrinter at the end of August and it does work with battery power but there are some problems really annoying: if I don't use the mPrinter for some days it won't switch on, neither with the charger, and I have to wait some minutes. In addition the mPrints printed on battery power are really faded.

Andrea
Re: Turnigy_4000mAh_Spektrum_DX8_Intelligent_Transmitter_Pack [message #25 is a reply to message #21] Tue, 01 October 2013 14:01 Go to previous messageGo to next message
badger is currently offline  badger
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Registered: September 2013
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About that power.. I know.. I discussed that with andy once he was responding.
Can you please disassemble the mprinter (unscrew the four bolts on the bottom) and take some photos how the battery is connected?

I'd like to add the above mentioned battery (and of course add some "howto" here for others), but there is no place where it is clearly visible "here connect the battery".


Re: Turnigy_4000mAh_Spektrum_DX8_Intelligent_Transmitter_Pack [message #30 is a reply to message #25] Wed, 02 October 2013 23:01 Go to previous messageGo to next message
AnMartini is currently offline  AnMartini
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Registered: September 2013
Location: Bologna, Italy
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I have to buy a new torx screwdriver because mine is too short. As soon as I have one I'll post the photos.

Andrea
Re: Turnigy_4000mAh_Spektrum_DX8_Intelligent_Transmitter_Pack [message #31 is a reply to message #30] Thu, 03 October 2013 14:31 Go to previous messageGo to next message
badger is currently offline  badger
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While thinking about it, maybe you might consider to add some switch on the battery wire in order to prevent the printer from depleting it. Or.. other (more elegant) option is to replace the AMS1117 linear regulator with a step-down. But I'll have to find out which one. I need to figure out the power consumption of the printer and search some step-down module on ebay.

Re: Turnigy_4000mAh_Spektrum_DX8_Intelligent_Transmitter_Pack [message #36 is a reply to message #15] Wed, 09 October 2013 23:34 Go to previous messageGo to next message
AnMartini is currently offline  AnMartini
Messages: 13
Registered: September 2013
Location: Bologna, Italy
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Here there are the photos of the battery!
http://imageshack.us/a/img34/3948/yv9.jpeg
http://imageshack.us/a/img845/686/awh3.jpg
http://imageshack.us/a/img14/3047/xmqz.jpg
http://imageshack.us/a/img845/686/awh3.jpg

I hope you'll find them useful!


Andrea
Re: Turnigy_4000mAh_Spektrum_DX8_Intelligent_Transmitter_Pack [message #37 is a reply to message #36] Thu, 10 October 2013 09:32 Go to previous messageGo to next message
badger is currently offline  badger
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Registered: September 2013
Location: Prague, CZ
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AnMartini wrote on Wed, 09 October 2013 23:34
Here there are the photos of the battery!
http://imageshack.us/a/img34/3948/yv9.jpeg
http://imageshack.us/a/img845/686/awh3.jpg
http://imageshack.us/a/img14/3047/xmqz.jpg
http://imageshack.us/a/img845/686/awh3.jpg

I hope you'll find them useful!


Thanks a lot, seems like there is some extra piece of PCB.

btw. The second and the last links are the same.


Re: Turnigy_4000mAh_Spektrum_DX8_Intelligent_Transmitter_Pack [message #38 is a reply to message #37] Thu, 10 October 2013 09:54 Go to previous messageGo to next message
badger is currently offline  badger
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Registered: September 2013
Location: Prague, CZ
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Hm, seems like "the magic" is the small piece of pcb on top of the mainboard. I don't have it there. Smile
I don't want to bother you much, but to be honest, I'm very courious about it. What are the chips on it? If the board is not soldered directly to the mainboard can it be removed and photographed from both sides in order to show ho the track goes on this board and what is written on the IC called U1?
Maybe what's written on q2 might be helpful as well, but not that important.

but.. hile thinking about it. I have some ideas. It seems just like a battery charging circuit given inbetween the power connector and the power input to the mainboard.
The 5pin header with yellow, red, white and black wire leads to the "button" PCB that is responsible for powering the processor part of mainboard.

This brings me to question..
Can the USB be used to charge the battery as promised by Andy?


Re: Turnigy_4000mAh_Spektrum_DX8_Intelligent_Transmitter_Pack [message #72 is a reply to message #38] Wed, 20 November 2013 04:24 Go to previous message
mPrinterKalynn is currently offline  mPrinterKalynn
Messages: 4
Registered: November 2013
Location: Texas
Junior Member
The battery is able to be added to any printer. You are correct it is just and additional board that attaches to the battery.


Kalynn
mPrinter
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