# Initial HW Version I/O query

**URL:** <https://forum.clockworkpi.com/t/initial-hw-version-i-o-query/3215>\
**Category:** Q&A\
**Created:** [March 15, 2019, 11:02pm UTC](https://forum.clockworkpi.com/t/initial-hw-version-i-o-query/3215 "2019-03-15T23:02:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![R37R0](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.clockworkpi.com/r37r0/32/11_2.png) [@R37R0](https://forum.clockworkpi.com/u/R37R0)\
**Post date:** [March 15, 2019, 11:02pm UTC](https://forum.clockworkpi.com/t/initial-hw-version-i-o-query/3215/1 "2019-03-15T23:02:02Z")

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Now that I have replaced the original motherboard with the revised version, the original is essentially a spare part that I was think about repurposing as an embedded development board.  
Are there any circuit diagrams which indicate the various interfaces to the main CPU? (power, I/O, etc) Also is there a GPIO array (like the raspberry Pi)?

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**Author:** ![Cecilectomy](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.clockworkpi.com/cecilectomy/32/1358_2.png) [@Cecilectomy](https://forum.clockworkpi.com/u/Cecilectomy)\
**Post date:** [March 16, 2019, 12:33am UTC](https://forum.clockworkpi.com/t/initial-hw-version-i-o-query/3215/2 "2019-03-16T00:33:54Z")

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this? [https://github.com/clockworkpi/GameShellDocs/blob/master/clockwork\_Mainboard\_Schematic.pdf](https://github.com/clockworkpi/GameShellDocs/blob/master/clockwork_Mainboard_Schematic.pdf)