# Failing installing node-mcp23017
**URL:** https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144
**Category:** General
**Created:** [9 January 2020 23:28 UTC](https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144 "2020-01-09T23:28:28Z")
**Posts on this page:** 11
**Page:** 2
### Author:  [@Vittorio](https://discourse.nodered.org/u/Vittorio)
#### Post date: [16 January 2020 08:45 UTC](https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144/21 "2020-01-16T08:45:50Z")
Wow that's nice, looking forward for the weekend to try this too 🙂
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### Author:  [@vlturner](https://discourse.nodered.org/u/vlturner)
#### Post date: [17 January 2020 19:00 UTC](https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144/22 "2020-01-17T19:00:44Z")
Simon, the node doesn't install under palette manager. Try to do it that way. It wont show as a node.
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### Author:  [@cymplecy](https://discourse.nodered.org/u/cymplecy)
#### Post date: [17 January 2020 20:58 UTC](https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144/23 "2020-01-17T20:58:32Z")
Just tried to install it on one of my Pizero that is around my house
It was found in the palette
It installed nicely
And the nodes are there
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### Author:  [@vlturner](https://discourse.nodered.org/u/vlturner)
#### Post date: [18 January 2020 00:56 UTC](https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144/24 "2020-01-18T00:56:51Z")
Simon, I get lots of errors you don't seem to get on the Pi 4 under Buster. There is something different here.
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### Author:  [@cymplecy](https://discourse.nodered.org/u/cymplecy)
#### Post date: [18 January 2020 08:14 UTC](https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144/25 "2020-01-18T08:14:47Z")
aah - both my installs were on Stretch machines so that prob explains the difference in behaviour
Or the node version - both of them are 10.16.3
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### Author:  [@CGroover](https://discourse.nodered.org/u/CGroover)
#### Post date: [5 February 2020 21:22 UTC](https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144/26 "2020-02-05T21:22:50Z")
I got that hubo working for outputs 0-7, however I am not able to make 8-15 work... is there something special to setup? firing the outputs via cmd manually works. I see the 23017 is configurable between 8 bit and 16 bit in the data sheet but I don't really know how that will affect this node. could that be it?
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### Author:  [@thomasmuench](https://discourse.nodered.org/u/thomasmuench)
#### Post date: [15 February 2020 13:19 UTC](https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144/27 "2020-02-15T13:19:57Z")
Yes! The same problem on my testboard. Port 0-7 working fine and 8-15 are not accessible
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### Author:  [@CGroover](https://discourse.nodered.org/u/CGroover)
#### Post date: [16 February 2020 16:07 UTC](https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144/28 "2020-02-16T16:07:59Z")
This node is working great for me.
> **[node-red-contrib-mcp23017chip](https://flows.nodered.org/node/node-red-contrib-mcp23017chip)**
>
> node-red node for mcp23017 - input and output
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### Author:  [@Vittorio](https://discourse.nodered.org/u/Vittorio)
#### Post date: [26 August 2021 07:49 UTC](https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144/29 "2021-08-26T07:49:03Z")
Sigh, I'm at it again.
I messed up my raspberry pi installation (still have the SD tho) and need to set up Node red and MCP23017 node again ☹
Sadly I can't find a way to install all the right version of it's dependancies.
The version I forked, editing the prerequisites versions, no longer works too.
I can get to work other MCP23017 nodes, but not the one I based all my flows on (You may suggest using these, but I liked the other node behaviour and configurablity best)
Can anyone help ?
Thank you!
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### Author:  [@Vittorio](https://discourse.nodered.org/u/Vittorio)
#### Post date: [26 August 2021 09:51 UTC](https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144/30 "2021-08-26T09:51:13Z")
Oh well, I just installed Node Red with Node 12 LTS and everything worked like a charm: I did:
```auto
npm install i2c-bus
npm install ncd-red-mcp23017
```
note for future self, and anyone stumbling into this dependency hell 🙂
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [9 September 2021 09:51 UTC](https://discourse.nodered.org/t/failing-installing-node-mcp23017/20144/31 "2021-09-09T09:51:19Z")
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