# Adding modules internally

**URL:** <https://forum.clockworkpi.com/t/adding-modules-internally/16505>\
**Category:** PicoCalc\
**Created:** [April 3, 2025, 2:47pm UTC](https://forum.clockworkpi.com/t/adding-modules-internally/16505 "2025-04-03T14:47:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![DigitalDreams](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.clockworkpi.com/digitaldreams/32/16007_2.png) [@DigitalDreams](https://forum.clockworkpi.com/u/DigitalDreams)\
**Post date:** [April 3, 2025, 2:47pm UTC](https://forum.clockworkpi.com/t/adding-modules-internally/16505/1 "2025-04-03T14:47:25Z")

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We’ve already seen an rtc module added internally…

> [@RTC inside the case?](https://forum.clockworkpi.com/t/rtc-inside-the-case/16484):
>
> The one thing that would make the PicoCalc perfect for me would be to have an RTC attached (I have the Pico 2W in mine now). Has anyone looked at doing this? I think I’d have to solder to some of the headers to make it work, which is okay.

But what about multiple INTERNAL modules ?. It seems we need some kind of 3d printed carrier and access to what onboard i/o is still free. I already have a blood oxygen and heartrate monitor, interested in temperature , humidity, air pressure etc and will certainly add the rtc as above. One thought was to buy headerless core boards and solder one of these in instead (bending and cropping top pins) yet would then render it impossible to change core modules…

 ![20250403_154524](https://canada1.discourse-cdn.com/flex029/uploads/clockworkpi/original/2X/b/b9e140add8632eedce485b5e50407f23cb913c0b.jpeg)