diff --git a/docs/Instruction/tips_list.md b/docs/Instruction/tips_list.md
index 9b6547ba26cc2e34fbb92ce368fa77d8bad89379..796c745dc82741e3ec06bb6bb127bc98bd8b56ad 100644
--- a/docs/Instruction/tips_list.md
+++ b/docs/Instruction/tips_list.md
@@ -44,5 +44,8 @@
 - [Write C language program to AVR-1 series](http://tatsuro.homma.fabcloud.io/fabacademy/tips/embedded_programming/write_c_program_to_avr1/)
 - [Register bit](./tips/register_bit.md)
 
+## Output devices
+- [Neopixel on ATtiny3216](http://yuichitamiya.fabcloud.io/fabacademy2020/projects/NeoPixel_ATtiny3216/)
+
 ## Other Tips list
 - [Tips List 2021](http://academany.fabcloud.io/fabacademy/2021/labs/kannai/site/instruction/tips_list/)