Mini ST-LINK/V2, in-circuit debugger/programmer for STM8 and STM32
The S9V11MA switching step-up/step-down regulator efficiently produces a...
This transducer is about 45mm in diameter and has 4Ω impedance and should be run at about 5W
16mm Speaker: 16 Ohm, 0.5 W
30mm Piezo Buzzer: 1-30V
50mm Speaker: 8 Ohm, 1 W
COM-10975 - Surface Transducer - Large, SparkFun
COM-10917 - Surface Transducer - Small, SparkFun