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No Pulse

in Support

Hi Guys

I finally got an arduino uno and upgraded to mrk4

First i put the bootloader and after i put the firmware.

For send the bootloader I used arduino as ISP. (This is the only one that works.)

Now I don't have any pulse

Can anyone help me out please

10 comments

10 Comments

Luís Alves

Oct 07

Bill

I send the boot loader again and get no errors

I also send the firmware

I unplug everything

And connect 12v power supply

No pulse continues and i also try to connect the servo ( previously tested ) not working too

Now when i connect the power supply the green light after 2/3 seconds shut down

Waiting for your quick reply

wjsteele

Oct 07

Replying to

Do you have an external power supply for the servo? If it's drawing too much power, it can cause it to shut down... so you need the external power supply for it.

Also, are you sure the switch is plugged in the correct way? It needs the green towards the outside.

Luís Alves

Oct 07

Replying to

Yes the servo is using external power.

The led problem persist even without connecting the servo the led when I power the board the led works for a few seconds and then turn off.

The switch is connected correctly the green towards outside

wjsteele

Oct 07

Replying to

The board is dead now... It's shorting somewhere. You'll need to return it to us and we can fix it. Contact me via email.

Bill

wjsteele

Oct 07

Try writing the bootloader again. It seems it didn't take.

Check for errors in the Arduino IDE output... They're easy to miss.

Then write the firmware again.

Bill