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    Rs-232 Devices Connecting

    Note my post prior, with such a design, including all elements needed to use the UART!!!
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    Voltage Convertor

    Thanks
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    Voltage Convertor

    A while ago I posted a voltage conversion board for the Pandora on these forums, I thought now that the pandora is available, I might re-post it here. This board contains a level convertor, a LDO regulator, a boot regulator and a RS232 driver. it is designed to fit in a standard 0.6" wide DIP24...
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    Sdxc?

    technically it does not, as SDHC has the address space caped, and to make bigger cards and conform to spec they will have to use SDXC. I am sorry for not searching.
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    Sdxc?

    I ask because the first SDXC card has been released.
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    Sdxc?

    title says it all.
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    Voltage Convertor Pcb.

    gerbers and others replaced with improved PCB with corrections noted by MWeston and also including his suggestion of a 1/1 RS232 tranciever.
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    Video Playback Performance

    also the PSP has dedicated H.264 decoder silicon.
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    Voltage Convertor Pcb.

    If I get a lot of people interested than I will use the one at the top of the page Otherwise I want to make this board as flexible as possible. if the efficency of the regulation is a problem they can simply turn off the regulator and add their own though and it increases the flexibility of...
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    Voltage Convertor Pcb.

    As this one does not seem will currently have the numbers to have it made, I have designed a larger board (4x larger), that anyone can make at home. with boards to be made available approx €4 if i get interest from more than 30 people. http://www.alexisshaw.com/Voltage convertor big.pdf price...
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    Voltage Convertor Pcb.

    Note to all I am trying to gauge interest in this product, I there Is not enough interest i simply will not go ahead with production, which would be a shamefull waste of time for me, but at least I am not bankrupting myself in the process, I would not make any profit on these boards, but as I am...
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    Voltage Convertor Pcb.

    this board takes the 2.8V out of the EXT port and gives you either 3.3V or 5V It also converts the 1.8 IO voltage levels out of the UARTs and gives you either 3.3V or 5V IO levels. to get $25 I need 100 orders, $20 - 200, $15 - 500. this is at cost price, without shipping, straight off the quotes.
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    Voltage Convertor Pcb.

    I have Designed and priced a voltage convertor PCB it has the following properties: 1/ MAX1722, Step up convertor, switchable between 3.3 and 5V 2/ TXB0108, 8 Bit Level convertor, Though t keep the board size doen only 6 bits of conversion are available 3/ LP3990TL 1.8V regulator, Needed...
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    Pandora Information On The Pandora''''s Ext Port.

    Oh I have just started working on reducing the size of the board and I am certain I can make this the size of a 16 pin shrink dip package. that is 572 mil x 390 mil, so about 14.5 mm x 9.9mm. Edit. Confirmed, this part will have the form factor of a 16 pin SPDIP that is a 70 mil dip case...
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    Pandora Information On The Pandora''''s Ext Port.

    well first of all this board is 10.15 mm by 20.3mm which is much smaller than 30mmx40mm. secondly this is intended for external mods. for internal mods I can make things much more dense than this. this board is actually very sparse.
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    Pandora Information On The Pandora''''s Ext Port.

    i use Altium designer 2009 but i can export to the previous version, The student version is actually very affordable, so I jumped on the opportunity.
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    Pandora Information On The Pandora''''s Ext Port.

    i do not think that PCB pool is possible with this part, the tolerances required are too high, but I will do a prototype. An assembly house i think is required here methinks. I am sorry but I do not think that you understand quite how small this PCB actually is in real terms.
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    Pandora Information On The Pandora''''s Ext Port.

    the source files are altium format, but if you are happy to use them I can send them through. the new version does not need 4 layers, 2 will do but It does need 3 mil space / trace. this is because of the 0.5mm bga part used for the convertor to allow the use of a 16 pin dip socket. I have done...
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    Pandora Information On The Pandora''''s Ext Port.

    I have had to change a few things for manafactuarability reasons, the new pdf can be found at. http://www.alexisshaw.com/voltageconvertor2.pdf
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    Pandora Information On The Pandora''''s Ext Port.

    it looks like the price for these is about 20 US at qtys of 100 pcs getting a quote for the boars now. the 1.8 V converter can easily be replaced for the equivelant 3.3V part with only a chane in 1 part. I will probably send it to an assembly house to have made up. this is not to be made up by...
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