# Converting code to a node
**URL:** https://discourse.nodered.org/t/converting-code-to-a-node/40294
**Category:** Developing Nodes
**Created:** [3 February 2021 08:38 UTC](https://discourse.nodered.org/t/converting-code-to-a-node/40294 "2021-02-03T08:38:20Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@V\_Tom](https://discourse.nodered.org/u/V_Tom)
#### Post date: [3 February 2021 08:38 UTC](https://discourse.nodered.org/t/converting-code-to-a-node/40294/1 "2021-02-03T08:38:20Z")
Hey
Some years ago, I was interested in this project: [https://github.com/crjens/PiPowerMeter](https://github.com/crjens/PiPowerMeter)
I got some of his boards and after quite some tinkering, I got it working.
Because I was not happy with the accuracy and didn't have the time to make it work properly, I left this project in the cupboard.
Now I want to give it another try. Unfortunately doing the install described on the github page is not working as there are many dependency errors.
As I'm now using Node-Red and InFluxdb for many of my home projects, I'd rather just implement this power meter into it.
Ideally, I have a node in Node-Red, where I can just inject a message saying which current channel, voltage channel and correction factor to use. And it would output a message containing current, voltage and power.
But how do I go about that? I can do some basic Javascript to make function nodes, but I have no clue on how to insert such a large amount of functions into 1 node.
Anybody that can give me some pointers, guides, help... so I can make this work?
Thanks a lot!
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### Author:  [@bakman2](https://discourse.nodered.org/u/bakman2)
#### Post date: [3 February 2021 10:21 UTC](https://discourse.nodered.org/t/converting-code-to-a-node/40294/2 "2021-02-03T10:21:23Z")
The easiest approach for this use case is using a subflow, then you can reuse the function.
Note that there is a big menu on the top of this site and one item is "documentation", both subflows and creating nodes is explained there.
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### Author:  [@V\_Tom](https://discourse.nodered.org/u/V_Tom)
#### Post date: [3 February 2021 20:57 UTC](https://discourse.nodered.org/t/converting-code-to-a-node/40294/3 "2021-02-03T20:57:07Z")
Thanks.
So I would create a subflow with function nodes, and each function node contains 1 function from the javascript source file?
I actually looked for some information about this, but Google was not a good helper. Should've checked the nodered website of course... 🤦♂️
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [4 April 2021 20:57 UTC](https://discourse.nodered.org/t/converting-code-to-a-node/40294/4 "2021-04-04T20:57:42Z")
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