if it doesent have to be ethernet, id go with a bluetooth module. they are very cheap on ebay, and its serial communication. doesent need any extra code to work.

http://forums.netdui...ss-programming/

(i not only use them for programming, nearly all my "projects" have one now, to send data from pc to the project)

//edit: sadly hey doubled in price the last few weeks

as always, i suggest a switching regulator, add a large enuff kondensator at the input side, done. it works from 6v to ~24v and outputs stable 5v

http://www.ebay.com/...=item3a74b337d4

its a switching regulator, not linear. so it can supply up to 2 amps w/o getting hot.

i also experienced good stability and no noise when using it. so it might be good for your motorcylce thingy

when you start it.

it totally likes this cable. its i/o is 3.3v (only the supply from the cable is 5v, dont use that)

in chat you just called this adapter. its an ftdi cable wich is good.

where did you specify its address?

ah i looked closer at the source from toolbox.

http://netmftoolbox....ailable classes

thats how you hook it up, seems correct.

you than have to specify its pin as outputs with: PinMode([color=rgb(0,0,255);]int[/color] Pin, [color=rgb(0,0,255);]bool[/color] Output)

than you can use: SetPin([color=rgb(0,0,255);]int[/color] Pin, [color=rgb(0,0,255);]bool[/color] Value)

http://netmftoolbox....ew/23314#354279

lm2577 as boost up. ebay also has modules where you can limit the current supplied

000 (0)

001 (1)

010 (2)

011 (3)

100 (4)

101 (5)

110 (6)

111 (7)

its 8.

slave address is:

0100 + 3 address pins (to ground means 0, to positive means 1) + r/w bit (set in the programm automatically, you dont need todo anything for that.)

so first address is 0x20, second 21... 22

use the windows calculator in programmer mode, you can enter binary and it will show you the hexdecimal output.

(dont add the r/w bit when you enter it, so enter only 7 bits.)

maybe adjust your pull-up resistor values on sda/scl lines. also try lock() your i2c code when you use multiple threads.

the mcp also operates at 5v? id go 3.3v with everything, also pullups.

you may try the multi-i2c class from the link in my signature, its similiar to netmf-toolbox but includes lock's

(i had troubles w/o them)

your pullup resistors are fine.

i dont think that works properly, since netmf has garbagecollector and such, also the thread switching can be an issue.

and its so much code. id use:

void SleepUSec(UInt32 Ammount)

{

DateTime startTime = DateTime.Now;

while(startTime.Ticks + (Ammount*10) > DateTime.Now.Ticks)

;

}

or something simmiliar should do it.

just to add: both solutions have that weak point. only native one is "perfect" as nevyn mentioned

try it again with the files and "guide" from here:

http://forums.netdui...-v420-update-1/

select the version wich you wanna have, one if for ttl deployment, the other for the 12v rs232 port.

i dont think the netduino 1 has pwm on the led.

also only 4 pwm channs

(5,6,9,10);

so iam not suprised your code crashes

http://www.netduino....duino/specs.htm

The gold pin doesn't do anything on the Netduino Plus. To do the firmware update you need to hold down the reset button before connecting it to the computer, plug in the USB, then release the button. The procedures for the rest of the firmware update are pinned at the top of these forums. 

thats only for boards with stm32. gen1 are sam7x (except go wich is stm32 too)

iam sure one coild is enuff for a lot of frequencies (tones) - except the low ones, wich it can do.

i have no idea how exactly it works, but its simmiliar to a speaker

since it looks like you have no idea - id suggest not building something - or at least reading tons about it before, and electricity in general - its higly dangerous and can kill you.

// edit thats in the link is no tesla coil - still thats what you can expect of a small scale tesla coil

for real big ones - arc attack is a group that makes shows.

to be honest, the test trial nr 6 doesent look very promising

also, it didnt look like you care much about safety, did i even

hear a kid in the background?

did you use native code for all the calculations?

cos when the gc kicks in its very bad for stability.

what about intended final price?

also in the vid you talk about wireless remote, every quad has this

good lucky anyways

normally optocouplers (even cheap ones) and mosfets do fine, i have one myself, i can go up to 10khz without problems.

i ve also built a small mosfet driver with 2 transistors that allows for faster and better switching the mosfet (less energy loss = less heat)

for a 90v motor, i guess it needs quite some power, you want your mosfet cooled or it will get hot and burn

no ive never experience such a delay.

maybe your circiut is wrong.

http://upload.wikime...kret_simple.PNG

thats a basic driver, i guess around 5khz (wich is very good, and sufficient for a motor i guess)

thats the one iam using

http://upload.wikime...et_pushpull.PNG

you can remove the r2,r3 and d1 if you dont care about emf.

"IN" is the output from the opto-coupler

that happen for me when the router cant resolve the hostname for the server, that it shows its login panel too.

i fixed that by giving my device a static ip and entered that in the router, but well, mines a bit different too i guess.

yes you can do that. spi, i2c and serial are possible ways todo so.

yes i allready connected netduino with arduino, i used the arduino as "graphiccard" -

and in anohter test as webserver. io is also possible, i used serial for communications, but spi

would be way fast.

did you try connecting it to sda and scl makred pins on netduino?

well, fist you have to get familiar with some arduino libs, like hardwasre serial and the pin functions (if you wanna more, than more ^^)

its very very simple: you open a serial connection on both, ar- and net- duino.

from the netduino you send like: byte1(identifier - like this byte means pin on off swichting) byte2(wich pin) byte3(value on/off / 0/1)

so you send like 0x07 0x01 0x00

on the arduino side you read the serial data, and process it. if(firstbyteReceieved == 0x07) { (look_at_second_byte) { turn_on_or_of_depending_on_thrid_byte } }

have you made the update to 4.2.2.2 ?

that was a sample, and it works for serial, spi, and ic2.

i myself use serialport.