# Build demo application from source?

**URL:** <https://forums.sifive.com/t/build-demo-application-from-source/1607>\
**Category:** HiFive1 Rev B\
**Created:** [September 14, 2018, 11:54am UTC](https://forums.sifive.com/t/build-demo-application-from-source/1607 "2018-09-14T11:54:30Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![bruce](https://sea2.discourse-cdn.com/flex020/user_avatar/forums.sifive.com/bruce/32/452_2.png) [@bruce](https://forums.sifive.com/u/bruce)\
**Post date:** [September 14, 2018, 8:22pm UTC](https://forums.sifive.com/t/build-demo-application-from-source/1607/3 "2018-09-14T20:22:43Z")

</div>

Yes, exactly, led\_fade is the preloaded program.

```
cd freedom-e-sdk
make software PROGRAM=led_fade
make upload PROGRAM=led_fade

```

The instructions say to use “screen” to monitor the serial port, but I find “minicom” works better.

```
sudo minicom -b 115200 -D /dev/ttyUSB1
```

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