Hi, I would like to use a spark core to poll for a bitcoin transaction and then flip a digital switch each time a new transaction is detected. I am using coinbase.com as my online bitcoin wallet. Coinbase offers a merchant service that you can configure to send transaction notifications to a webs…

Coinbase sends a json file that the spark cloud isn’t going to be able to know what to do with. You’re going to have to have something in between coindbase and the spark cloud that takes the json from coinbase and hits the cloud api with the details. Do you have a webserver somewhere?

Thanks for the quick reply. Unfortunately I do not currently have access to a web server that would be consistently online and available. I’ll need to investigate my options here… Darryl

Perhaps you can use the TCP Server library on the Spark Core, and forward a port on your router so that Coinbase may interface with it directly? There have been some TCP Server examples on the forum, and docs are here: http://docs.spark.io/#/firmware/communication-tcpserver

I wonder if there are any online services that you could post json to, and it would transform it and post it to the cloud… I remember hearing something similar a while ago…

@dadamspdx I just remember seeing such a service. I haven’t played with it much but you might be able to create your middleware peice that sends your coinbase transaction to the spark core using zapier.com . Create a new zap and use the webhook to create an endpoint for coinbase to send the transacti…

[image] Hypnopompia: I just confirmed you can do this with zapier. I even tested it with coinbase. Setup a webhook trigger that coinbase sends data to and then use another webhook to send the appropriate data to the spark cloud. Pretty nice actually! Sounds like this service could be used for…

Yeah, when I get home tonight, I’ll create a walkthrough w/ screenshots and post it in a new thread.

@Hypnopompia ’s suggestion about zapier is a great one, but if you want to get deeper in the code, Heroku is a great service for quickly deploying web apps, and it’s often free, if you’re not doing anything crazy

Thanks all for the feedback! I took a look at Zapier, and it is definitely a cool service for creating simple integrations. One limitation is that the service only runs every 15 minutes so it is not the best solution to facilitate transactions that need to be closer to real-time. Another approach…

Using a Bitcoin transaction to trigger an event

Cloud

Hypnopompia February 25, 2014, 1:55am 14

@RWB

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Using a Bitcoin transaction to trigger an event

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