SPI to USB interface

Forum 2005-2010 (read only) Hardware Interfacing
1

Hi Everyone,

Can anyone tell me if it is possible to use one of the mini Arduino boards to convert from an SPI interface to a USB interface. I would like to have a small hopefully the size of a chewing gum packet box with a USB connection and a screen attached then the ability to push an image/text to the screen via USB.

Will this work ? Has anyone got any ideas or can you tell me what components would be best

Thanks for the help

Jonathan

2

The Fundamental Logic iDuino has onboard USB and sells for about $18


Imgur

Maybe you can use that

There are other boards like it as well

:slight_smile:

3

THanks for the information, that looks great, does it have the ability to connect SPI to the board or would i need to build a mini shield or something like that ?

Also how easy would it be to swap the USB connection to Mini USB ?

Thanks for your help

4

The iDuino has onboard USB which can be used to communicate with it and power it at the same time so I don't think you would need anything else

Do you need another USB connection? If you do what do you plan to use it for?

You could use a mini-USB to USB-B adapter

The iDuino normally comes with the USB-B connector and FTDI chip pre-soldered because those are quite difficult to solder by hand

:slight_smile:

5

Hi Thanks for the reply, i saw that it comes with the USB A already soldered onto the board but may try to solder a mini usb connection on to it.

So with the board i have USB connection and i have everthing on the board to be able to connect an LCD screen via SPI.

Have i got that correct :-[

Thanks for the advice and help

6

I think you can use a K107 LCD backpack from Wulfden or a similar board from Modern Device

http://wulfden.org/TheShoppe/k107/k107-51.jpg

http://moderndevice.com/Images/LCDpop300.jpg

The K107 only requires 1 signal pin from the Arduino to operate plus power

I believe SPI requires 4 pins and is a lot more complicated

:slight_smile: