Solderable usb stick.
I am looking for a pcb mounted usb memory.
Really want a 4 pin solution and not have to solder seperate ics.
Does such a thing exist ?
I think you are looking for a USB breakout board?
No.
I an looking for usb memory that i can solder to a custom board.
No sockets.
Its for a logging accelerometer and spec says no connectors.
Scroll down to see a couple pics of what makes up a USB memory stick. The main components are the USB interface chip, and the memory chip. Pretty complex, eh?
If there are no connectors, why do you need the USB part?
Boardburner2:
No.I an looking for usb memory that i can solder to a custom board.
No sockets.
Its for a logging accelerometer and spec says no connectors.
Much easier to get a flash memory chip with SPI interface.
Thanks , yes i have looked into that avenue.
For assembly and simplicity a four pin device would be a lot easier.
The memory would be interrogated by a pc using an edge connector onto pcb fingers.
A standard usb cable just plugs onto the board.
You may have seen business cards (a thin pcb)which do this
fungus:
Boardburner2:
No.I an looking for usb memory that i can solder to a custom board.
No sockets.
Its for a logging accelerometer and spec says no connectors.Much easier to get a flash memory chip with SPI interface.
I have tried that but the arduino has to convery from the memory to the usb cable and its sloow.
How are you going to talk to the USB device with an Arduino?
CrossRoads:
So instead the type A connector, you want pads like this?
Yes.
Pins would be nice but a bare board would do.
Ones i have seen however have components on same side as connector , so does not fit flush for surface mount.
fungus:
How are you going to talk to the USB device with an Arduino?
Someone else has already done it, have not got around to discovering how yet.
I do know that some sort of controller chipset was used though.
It was a usb host controller and a usb hub chip.
Boardburner2:
It was a usb host controller and a usb hub chip.
Boardburner2:
For assembly and simplicity a four pin device would be a lot easier.
How do these combine ?
Boardburner2:
fungus:
Much easier to get a flash memory chip with SPI interface.I have tried that but the arduino has to convery from the memory to the usb cable and its sloow.
What "usb cable"?
Just send it over the serial port when you press a button. 115200 baud will dump a data log pretty fast.
Or get an Arduino Leonardo.
I have an intel D510 motherboard that supports their usb-based SSD. Not sure if it works in a standard USB header.
http://www.cpusolutions.com/store/pc/Intel-Z-U130-Value-Solid-State-Drive-solid-state-drive-4-GB-Hi-Speed-USB-p1241.htm#.UtAnJfRDsRo
fungus:
Boardburner2:
fungus:
Much easier to get a flash memory chip with SPI interface.I have tried that but the arduino has to convery from the memory to the usb cable and its sloow.
What "usb cable"?
Just send it over the serial port when you press a button. 115200 baud will dump a data log pretty fast.
Or get an Arduino Leonardo.
Standard usb cable, with plugs both ends.
Take an 8 GB drive and fill it up.
With several hundred files.
Transfer to hd and time it .
Then imagine doing that at 115 k.
Here is the general idea
In this case the memory stick needs to be soldered to the board.
They are very common and for simplicity,cost and laziness i was hoping to find a bare bones one with 4 pins.
CrossRoads:
USB flash drive - WikipediaScroll down to see a couple pics of what makes up a USB memory stick. The main components are the USB interface chip, and the memory chip. Pretty complex, eh?
If there are no connectors, why do you need the USB part?
Picture above.
I considered rolling my own but parts are insane money compared to a usb stick.
Very few stockists for the controller anyway.