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Project Notes

#362 H83A Audio Effects Chip

Figuring out how to use the H-83A “12 songs” music chip.



The H-83A is yet another music chip, this time programmed with 12 tunes - a selection of Chinese pop and folk tunes. I owe big thanks to Ian Wang who provided the list of song titles. I’ve linked up some examples on YouTube:

No Title
1 常回家看看
2 有一个姑娘
3 心太软 (Richie Ren!)
4 妈妈的吻
5 爱拼才会赢
6 月亮惹的祸
7 健康歌 (purple people eater;-)
8 涛声依旧
9 拨浪鼓
10 好日子
11 读书郎
12 懂你

Ian also has a demo on YouTube (a better recording than mine):



Usage and Schematic

This chip requires very minimal external components:

  • push-button switch
  • 180kΩ resistor
  • speaker (e.g. 8Ω)
  • 3-4.5V power

Songs start playing when the switch is pressed. Pressing the switch again will switch tunes. The song ends after one cycle (i.e. not infinite repeat!)

Volume is very decent without any amplification.



Here’s a demo FWIW. There is a bit of warbling, I think mainly due to imperfect breadboard connections.


Credits and References

Project Source on GitHub Project Gallery Return to the LEAP Catalog

This page is a web-friendly rendering of my project notes shared in the LEAP GitHub repository.

LEAP is just my personal collection of projects. Two main themes have emerged in recent years, sometimes combined:

  • electronics - usually involving an Arduino or other microprocessor in one way or another. Some are full-blown projects, while many are trivial breadboard experiments, intended to learn and explore something interesting
  • scale modelling - I caught the bug after deciding to build a Harrier during covid to demonstrate an electronic jet engine simulation. Let the fun begin..
To be honest, I haven't quite figured out if these two interests belong in the same GitHub repo or not. But for now - they are all here!

Projects are often inspired by things found wild on the net, or ideas from the many great electronics and scale modelling podcasts and YouTube channels. Feel free to borrow liberally, and if you spot any issues do let me know (or send a PR!). See the individual projects for credits where due.