> For the complete documentation index, see [llms.txt](https://docs.blynk.io/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blynk.io/en/legacy-platform/legacy-articles/particle-electron.md).
# Particle Electron
{% hint style="warning" %}
This documentation is for the LEGACY version of Blynk platform which is no longer supported and will be shut down.
You can sign up for the current version of Blynk platform [here](http://blynk.cloud/dashboard/register).
The new mobile apps can be downloaded from [App Store](https://apps.apple.com/us/app/blynk-iot/id1559317868) and [Google Play](https://play.google.com/store/apps/details?id=cloud.blynk\&hl=en\&gl=US).
The actual Blynk documentation is [here](https://docs.blynk.io/).
{% endhint %}
### Getting Started
To start with Particle Electron, please refer to [this example](https://github.com/vshymanskyy/blynk-library-spark/blob/master/examples/02_Particle_Electron/02_Particle_Electron.ino).
### Troubleshooting
* If you see the `Device Offline` or `Invalid Auth Token` messages, please check this part of the example:
```
// Run command "ping blynk-cloud.com", and set Blynk IP to the shown address
#define BLYNK_IP IPAddress(45,55,130,102)
```
Note, that this is a temporary measure.
* There were reports that some versions of Electron firmware failed to work with Blynk. Version `0.6.0` is recommended, and `0.5.3` is confirmed to work fine.
### Attention!
Blynk can consume quite a lot of data! Use carefully not no overpay for the data plan.\
Each call to `virtualWrite()`, or `setProperty()`, and most widget API calls will consume some data. Also, Blynk sends "heartbeat" messages with a fixed interval (defaults to 10 seconds), to keep the network connection alive. Each heartbeat uses \~90 bytes of data. You can modify this interval, putting this line on the top of your sketch (before including Blynk headers):
```
// Set Blynk hertbeat interval (in seconds)
#define BLYNK_HEARTBEAT 60
```
Please choose the one that works best for you.
---
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