I have two Xbee Series 1 Modules. I want to configure one as transmitter and one as receiver. Could someone please recommend a good website or a tutorial link to do the same ? Any help would be appreciated.
Thanks in advance.
Digi International has an entire website dedicated to examples, including some for just getting started. It includes a Basic XBee 802.15.4 (Series 1) Chat that sounds like what you're looking for.
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Completely new to Arduino and am looking to really dive in. An idea I have requires a small form factor for a gsm/gprs module, something that could work with one of the micro arduinos. I can't find any sort of really small gprs modules.
My question:
Is it possible to use the module from an old cell phone and adapt it to arduino? Or is that an outrageous concept? I also found one that looked interesting on (ebay) would it be possible to adapt to something like that?
I am aware that it'd be a big undertaking!
Thanks for the help.
It is possible! most of the modules serially communicates you only need to get the baud-rate correct.
There are examples and tutorials you can find on the internet this Instructables tutorial is worth seeing.
I have 2 usb devices that are connecting to my computer, I need to take the data input from 1 port and output it to the other port, and vice verse. I am using Ubuntu 10.04 as OS. I tried to use jpnevulator but I can't figure it out.
Any help will be appreciated, thanks in advance.
I give a detailed overview of these kind of problems in this answer to a related question.
I would suggest you use libusbx to read data from one usb and write that to the other. Basically what happens is that you enumerate all the devices, discover the correct HID descriptors, and plug those into a libusbx interface to read/write. It really is this simple. As far as details, you should be able to look up each of what I just said - they are solid/correct keywords as far as I'm aware. You can also visit the post above for some more resources. For instance, there is at least one solid example on that page at the very bottom. Hopefully this helps get you started!
I'm a bit new to Modbus communications and I've started reading about the "Free Modbus" library. Now, I understood how to use it to implement the slave side of the Modbus communications, but I just can't seem to find how to use the library on the master's side. For example, what function show I call on the master's side to read discrete input number 3 of slave 19 (for instance)?
Thank you in advance for the help.
By the way, I'm writing in C and am programming for a MSP430 microcontroller.
It's not stated directly on the website, but FreeMODBUS library supports only slave side. For example in the init function ( modbus.html#ga0">http://www.freemodbus.org/api/group_modbus.html#ga0 ) one of the parameters is "ucSlaveAddress" - address of your (slave) device.
The guy that created FreeMODBUS now works on commercial libs, and there's is a library for master mode - http://www.embedded-solutions.at/index.php/en/products/modbus-master
I am doing a project that extends SPICE. I need to send some custom data between server and client. I beleiev this is done by adding a custom channel to the SPICE protocol
I've got the source code, but it's huge and overwhelming. Can anyone give me a few pointers as to how to start, or direct me to a similar project so I can refer?
Thanks in advance
I suggest to start reading the "SPICE for Newbies" document, then moving to other documentation. It will give you some introduction on the architecture of SPICE, the protocol, standard channels, etc.
Available on spice-space.org/documentation.html
Since spice-gtk 0.15, and qemu 1.4.0, you can set up arbitrary channels by name using the "Spice port", see spicy.c code for an example of usage.
Can anyone please suggest a small PIC board which has a web server built into it and can be programmed to handle ftp connections?
Some members of the PIC32 family, such as the PIC32MX675F256H and PIC32MX795F512L include an integrated Ethernet interface. An evaluation board for the PIC32MX795 is available: DM320004 (see picture below).
You can also add an Ethernet controller and use Microchip's free TCP/IP stack with their PIC18, PIC24, dsPIC and PIC32 families.
I would suggest http://www.modtronix.com/. They have a number of expandable PIC boards including Ethernet/web-server.
I know this is an old post, but I stumbled onto it, maybe others will. One pretty cool project is the UConTroll. It's a PIC24 based WiFi product that has a Web interface. More info here.