Local cloud don't find cores


Did all the step by step until the command:
node main.js

I can see the public key

open a new terminal

Now connect the USB Core in raspberry and put the core in DFU mode flashing yellow color

cd core_keys
spark keys save INPUT_CORE_ID_HERE

but I receive this error message:

Apparently I didn’t find a DFU divice? util said dfu-util 0.5
dfu-util does currently only support DFU version 1.0

where is the problem?

Sounds like you might be on Ubuntu?

Your DFU-util version is too long. Can you try on some other machine instead to save the keys? :wink:

1 Like

I don’t have other machine, have another way to solve this problem?

You can try to upgrade DFU-util then?

Or might be related to this:

I change the dfu-util version to 0.8 and don’t work yet.

1.) What OS are you on?

2.) How did you install the DFU-util driver?

3.) Is the core in DFU-mode (blinking yellow)?

raspberry raspian

wget http://dfu-util.sourceforge.net/releases/dfu-util-0.8.tar.gz
tar -zxvf dfu-util-0.8.tar.gz dfu-util-0.8
cd dfu-util-0.8/
sudo make install

My core is blinking yellow

Libusb 1.0 installed

What does dfu-util -V say?

Try sudo dfu-util -l

dfu-util 0.8

I found part of solution , now dfu-util -l show

but if I insert:
spark keys save MYcodeid

receive message dfu-util cant find core

try sudo spark keys save core_id

You need to replace core_id with id if you know what it is… or you can use some temporary name but not recommended since the file needs to be named with the core_id to work with the local :cloud:

ok I made it insert the correct core id but receive error message, can’t find core

Use this command instead: sudo dfu-util -d 1d50:607f -a 1 -s 0x00002000: 612 -U core_id.der


openssl rsa -in core_id.der -inform DER -outform PEM -pubout -out core_id.pub.pem

the 2 command works, but what they make?

It is the same as spark keys save core_id but i don’t want to waste time figuring out what’s wrong with your setup.


1.) grab the core private key from the external flash

2.) Convert to a public key using openssl.

3.) Done!

So now my spark core is in my local cloud?

You probably need to play around with the default core + :spark: :cloud: setup first and have a better understanding of how everything comes together!

This might also be useful for you find out what’s wrong:

thank you,

I made this tutorial is all working, Now I need test if your 2 commands turn my core into local cloud.

You need to copy the file to the core_keys directory basically… and test…

I have more questions,

where can I find local token,

and what is the format of string $url = “https://api.spark.io/v1/devices/$deviceID/led/?access_token=$dispositivo”; to local cloud?