// insert a coin to leave
IDLE
Shelf
tap a slot to buy
— collection tray —
INSERT COIN
₹0
credit
Insert
Machine’s coins
State: IDLE
Insert a coin. Watch which
state
the machine moves to — every button behaves differently in each one.
↩ Coin return
💰 Empty the coin bank
↺ Reset
▸
Try buying
before
paying — the state refuses you.