# JACDAC Hardware DDK ?

**URL:** <https://forum.makecode.com/t/jacdac-hardware-ddk/12007>\
**Category:** micro:bit\
**Created:** [February 2, 2022, 11:40pm UTC](https://forum.makecode.com/t/jacdac-hardware-ddk/12007 "2022-02-02T23:40:47Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![frank\_schmidt](https://avatars.discourse-cdn.com/v4/letter/f/7993a0/32.png) [@frank\_schmidt](https://forum.makecode.com/u/frank_schmidt)\
**Post date:** [February 2, 2022, 11:40pm UTC](https://forum.makecode.com/t/jacdac-hardware-ddk/12007/1 "2022-02-02T23:40:47Z")

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@peli , I’m looking for your hardware specs for the peripherals for jacdac system. You have them for the new USB connector but I need the distances and locations of the holes in the boards of each sensor/actuators. Or are they mandated in form factor ? I’m talking about those gold ring holes in each peripheral board. Can you point me to DDK documents ? Thanks. [https://github.com/microsoft/jacdac-ddk/blob/main/connector/JACDAC\_PCB\_Edge\_Connector\_Drawing\_JD-PEC-01\_rev\_01.pdf](https://github.com/microsoft/jacdac-ddk/blob/main/connector/JACDAC_PCB_Edge_Connector_Drawing_JD-PEC-01_rev_01.pdf)  
Distance between these holes:

 ![jmbrainesp3248v03.catalog](https://us1.discourse-cdn.com/flex020/uploads/makecode/original/2X/4/4018d171e5180060f529aeec696c645d1c82f56f.jpeg)