Wooden fish is often used in rituals usually involving the recitation of sutras, or Buddhist texts. Merit-making is important to Buddhist practice, and it is a beneficial and protective force which accumulates as a result of good deeds, acts, or thoughts. People can earn merit through beating the wooden fish.
This project is a fish-shaped electronic “wooden fish” made of acrylic panels. It needs a seven-segment display, and an Adafruit Audio FX Sound Board connected up to the Feather Huzzah ESP8266 wifi board. The top of the wooden fish will display my merit count. I can remotely beat the electronic “wooden fish” whenever I realize I have done something wrong, such as evading fares.
Link to my Instructible account : Electronic “Wooden Fish” : 5 Steps – Instructables