# Problem of Using IIC on Pynq-Z2

**URL:** <https://discuss.pynq.io/t/problem-of-using-iic-on-pynq-z2/5315>\
**Category:** Support\
**Created:** [March 5, 2023, 9:26am UTC](https://discuss.pynq.io/t/problem-of-using-iic-on-pynq-z2/5315 "2023-03-05T09:26:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Qilin\_Zheng](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/qilin_zheng/32/4345_2.png) [@Qilin\_Zheng](https://discuss.pynq.io/u/Qilin_Zheng)\
**Post date:** [March 5, 2023, 9:26am UTC](https://discuss.pynq.io/t/problem-of-using-iic-on-pynq-z2/5315/1 "2023-03-05T09:26:06Z")

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Hi All:  
I am using a Pynq-z2 board with Pynq 2.4 installed.  
My task is to design an IIC master device with PS or PL.  
Now I am trying PS side, I run the i2cdetect command but there is no device.

 ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/c/c716a3d4d7de0a5fd001a48aa212ea33ba6c08a9.png)  
I did not connect any IIC slave device to the board, will it be the problem?