we know. it says so in the specs

i'm using a camera with the OV528 chip and there is a class for it and it works!

I need to monitor a state of some 28VAC lines.

 

Hows the best way to do this?

 

I know i need a full bridge, some smoothing and a opto coupler but the bit inbetween the smoothing and opto im stuck on.

we are interfacing to some equipment so there are several inputs of 28VAC so using transformers and regulators is out of the question. The response needs to be pretty darn quick too. Basically its to detect a presence.

 

I know PLC's have AC/DC inputs, so i kinda need that input stage fitted to my NP2

Thanks for the replies

 

Im aware of the 3700 but its expensive and im having to use components that if it becomes obsolete it can easily be replaced.

 

I've a circuit diagram which should do what i need

loading history file ... 0 events added
SAM-BA console display active (Tcl8.5.9 / Tk8.5.9)
(sam-ba_2.12) 1 % 
(sam-ba_2.12) 1 % FLASH::Init
-I- Loading applet applet-flash-at91sam7x512.bin at address 0x202000
-I- Memory Size : 0x80000 bytes
-I- Buffer address : 0x202B44
-I- Buffer size: 0x1D300 bytes
-I- Applet initialization done
(sam-ba_2.12) 1 % FLASH::ScriptGPNMV 4
-I- GPNVM2 set
(sam-ba_2.12) 1 % send_file {Flash} "C:/Users/Ash Jones/Desktop/NetduinoPlus_Firmware_4.2.0.0/TinyBooterDecompressor.bin" 0x100000 0
-I- Send File C:/Users/Ash Jones/Desktop/NetduinoPlus_Firmware_4.2.0.0/TinyBooterDecompressor.bin at address 0x100000
 first_sector 0 last_sector 2 
-I- 	Writing: 0xA104 bytes at 0x0 (buffer addr : 0x202B44)
Do not unlock 
-I- 	Writing: 0xA104 bytes at 0x0 (buffer addr : 0x202B44)
-E- Generic::Write returned error (0x00000004)
(sam-ba_2.12) 1 % 

fails on send file

anyway it seems to have something. powered off & powered on the USB (popo) now it tried to instal NP driver and fails! so i go the np driver folder and now it says no driver can be found!

oh that gold pin. blanked it and now its coming up and a com3 camera detect. using samba-ba 2.12 on the flash tab, the send file is the tinybooter sent it with locks. disconnected the usb and reconntected and still thinks its a camera, lol.

oh i had 4.2 rc5 before just installing the qfe stuff now. But i already have the 4.2SDK installed the april version. Would i need to install it again?

great just downloaded sam-ba 2.12 and nothing is showing in the connection window

i just did this:

            DirectoryInfo dirinfo = new DirectoryInfo(@"\SD\Bin");
            if (dirinfo.Exists)
                GotSDCard = true;

something is not quite right for some reason its taking nearly 10secs to transfer a 20k jpeg image @ 115200! something is a miss somewhere.

Im using Com1, Com2 is being used for rs422 so i dont mind swapping

no, thats a good point. will have a bash today, cheers.

i can only get a max of 115200!

I think secret labs should get a camera to try in order to see whats going on

this code does not work with np2. I'm using a different lib and im having issues too. I had to go back to the NP1

 

my post

http://forums.netdui...-on-the-plus-2/

 

Is there is an issue here somewhere! the NP2 does not like this camera when trying to get the data out of the camera after its been setup

let us know how you get on

 

i just find it strange that the command that fails is when im trying to get the image data out of the camera. Functions that work are.

 

reset

set image size

set baud rate

set compression

take a pic

get image size

stop pic

Thats what I've used but like i said it hangs on the assembly.load and does not return my app just hangs

I'm trying to do the above. it was working ages ago but now all of a sudden my app just hangs!

            byte[] assemblyData = GotSDCard ? File.ReadAllBytes(filename) : ServerHelper.DownloadFile(filename);
            if (assemblyData == null)
                throw new Exception("Assembly was empty");
            try
            {
                Assembly assm = Assembly.Load(assemblyData);
                Debug.Print("loaded Assembly: " + filename);

it hangs on the Assembly.Load call.

In the output window i get

The debugging target runtime is loading the application assemblies and starting execution.
'Microsoft.SPOT.Debugger.CorDebug.dll' (Managed): Loaded 'C:\Program Files (x86)\Secret Labs\Netduino SDK\Assemblies\v4.2\le\SecretLabs.NETMF.Hardware.NetduinoPlus.dll', Symbols loaded.

How can i fix this or see whats going on?

its the same size and im using the little endian file. it wont even load it from the sd card if i manually copied the pe file.

would love to but it's a commerical project. I'm scrapping this now as I've spent too much time on it. Just wish this device could do OTA updates. Now got to work on a RS422 interface

thanks but that was the basis of my code

we could have 100 of these suckers attached to a webserver and it would be nice if the webserver pushed the firmware update.

Adafruit was the place we got the plus 2's from because no where in the UK had enough stock and no stock of the plus 1's. We went for the Plus 2 thinking it would be a direct drop in replacement.

 

The funny thing is ive put my shield back on the plus 1 and its working as well as can be expected. Stick on the plus 2 the com2 and debugging is a nightmare.

 

Com 2 is set to 38400 initally until i set up the camera and the camera the baud rate to use is 115200. Then i close the port, change the baud rate and then re-open it. Any other comms after returns 0 bytes to read!