First of all, thanks for the quick answer, had some busy days...
well back to my question, hardware based driver ... right.
the best question is how to interconnect them together (hardware
so i can support SD XC, i also decomposed a
"Transcend USB 3.0 Super Speed Multi-Card Reader for SD/SDHC/SDXC/MS/CF
and could not find out any clue expect it is broken now XD.
Maybe I should describe the project:
2x 9V Batterie (Rechargeable)
1x Voltage regulator 9V
1x 4-State Variable Resistor (Analog Signal)
(Vcc - 3/4 Vcc - 1/2 Vcc - 1/4 Vcc)
Pixl readout:1ms/Pixl (Analog)
precision: 8 bit
1x SD XC Card
1x SD XC Card-slot
(not all parts are displayed here!)
Self rechargeable device, can store Pictures in different mod.
1. 1 frame Picture
2. 1 sec long Picture mode (average value will be saved)
3. Video Mod
4. not set yet
How to operate:
The device can/should operate with or without batteries for limited time
(sunlight should be provided)
When the device use battery charge orange LED will light up.
Red LED will light up when batteries are depleted.
Green LED light up when Solar-array supports enough power to recharge
The different mod. will be realized with the 4-state variable resistor.
Button is for activate/ deactivate/relase an action,
atm. is the SD XC Part missing and i could need your help to realize