# Connect NB-Iot between notecard and PC program - no notehub

**URL:** <https://discuss.blues.com/t/connect-nb-iot-between-notecard-and-pc-program-no-notehub/137>\
**Category:** Notecard API\
**Created:** [February 9, 2021, 5:05am UTC](https://discuss.blues.com/t/connect-nb-iot-between-notecard-and-pc-program-no-notehub/137 "2021-02-09T05:05:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![timbo](https://avatars.discourse-cdn.com/v4/letter/t/ad7895/32.png) [@timbo](https://discuss.blues.com/u/timbo)\
**Post date:** [February 9, 2021, 5:05am UTC](https://discuss.blues.com/t/connect-nb-iot-between-notecard-and-pc-program-no-notehub/137/1 "2021-02-09T05:05:50Z")

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I wish to explore how to communicate with my NB-Iot/CatM Notecard, or my Cat 1 Notecord from a software program running on my computer…without the use of NoteHub. Are there any tutorials, instructions for setting up JSON, etc.

The device connect to the modem over UART is ESP32. I fine interacting with notecard from ESP32. trying to setup either TCP/IP or UDP based messaging. Modem is stationary.

Thanks

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**Author:** ![Carl-Henderson](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/carl-henderson/32/587_2.png) [@Carl-Henderson](https://discuss.blues.com/u/Carl-Henderson)\
**Post date:** [February 9, 2021, 6:57am UTC](https://discuss.blues.com/t/connect-nb-iot-between-notecard-and-pc-program-no-notehub/137/2 "2021-02-09T06:57:32Z")

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Hi timbo,

Welcome. Might I ask what kind of project you’re doing? Monitoring sensor data, remote control, etc? Knowing your use case can help us figure out how to get you going.

For cellular communication: Your ESP32 can use the Notecard to make [simple HTTP requests over TCP](https://dev.blues.io/reference/complete-api-reference/web-requests/), but there’s no way to directly speak TCP/IP or UDP through the Notecard’s cellular modem. The Notecard only “knows how to speak” a special notehub protocol and the HTTP requests are always relayed through the connected notehub. So, running a public HTTP server on your computer would allow your ESP32 to talk to your computer through notehub:

`ESP32 <=> Notecard <=NB-Iot/Cat1=> Notehub <=> HTTP server on your Computer`

If you want your computer to communicate over USB to your Notecard that’s also straight-forward but I get the impression you wanted to communicate over cellular.

Thanks for the good question,

Carl