# Issue with Network system

**URL:** https://forum.fablabs.io/t/issue-with-network-system/42924
**Category:** Projects
**Created:** [August 4, 2021, 12:24am UTC](https://forum.fablabs.io/t/issue-with-network-system/42924 "2021-08-04T00:24:29Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![grantfleischer](https://forum.fablabs.io/letter_avatar_proxy/v4/letter/g/e495f1/32.png) [@grantfleischer](https://forum.fablabs.io/u/grantfleischer)
#### Post date: [August 4, 2021, 12:24am UTC](https://forum.fablabs.io/t/issue-with-network-system/42924/1 "2021-08-04T00:24:29Z")

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Looking for help

I am having trouble with networking 2 slave boards with a master using software serial. I am using a master board with a button that will send a 1 over serial; then the two slave boards will read the serial and turn on when the 1 is detected and send back a confirmation. I am using 2 ATtiny412 processors for my slave boards and a ATtiny1614 for my master. my hardware is working but I am confused on my code issues. I will post my code and

 ![Screen Shot 2021-08-03 at 8.24.09 PM](https://forum.fablabs.io/uploads/default/original/2X/4/4c60bc5ad7877505dfb8cdac9b4e3eb090094967.jpeg) master board schematic

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### Author: ![adriantrains](https://forum.fablabs.io/user_avatar/forum.fablabs.io/adriantrains/32/1434_2.png) [@adriantrains](https://forum.fablabs.io/u/adriantrains)
#### Post date: [August 17, 2021, 5:14pm UTC](https://forum.fablabs.io/t/issue-with-network-system/42924/2 "2021-08-17T17:14:39Z")

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Hi!  
You can follow this documentation

[http://fabacademy.org/2020/labs/leon/students/adrian-torres/week14.html#hello\_serial\_bus](http://fabacademy.org/2020/labs/leon/students/adrian-torres/week14.html#hello_serial_bus)