Uploaded June 2025 | Updated September 2026, 5 days ago
I’m sorry, but I’ve got the buzzer wrong. Let me set the record straight …
↓↓↓ Complete description, time index and links below ↓↓↓
In the last video I stated, that it is a piezo buzzer, driven by the motor controller via an open drain/collector output, switched at 2.5kHz (link below). I’ve learned that this can’t be true (link below). So let’s find out how it really works.
First we have a look at my initial analysis and why the circuit I proposed can’t possibly work. Then we analyze the motor controllers buzzer output. Finally we determine and verify that’s in fact a DC buzzer, probably an electromagnetic one.
00:00 Intro – some of the statements I made were false
00:55 Piezo buzzers – why my idea could have never worked
03:50 Driver analysis – totem-pole or open collector/drain?
07:32 It’s a DC buzzer – with its own build in driver circuit
09:32 Wrap-up – never thought it could be a DC buzzer, bye
Teardowns youtube.com/playlist?list=PLwq-2MnM58FJPg01ooMBgy_CxDxAem0my
Haswing Protruar 2.0 24V Trolling Motor – Unboxing and First Impressions youtu.be/DSgi4pclBUA
Haswing Protruar 2.0 24V Trolling Motor – Teardown & Reverse Engineering youtu.be/I8f8282jB8g
Haswing Protruar 2.0 24V Trolling Motor – Further Teardown youtu.be/Fr-SQFcZ-08
Haswing Protruar 2.0 24V Trolling Motor – More Reverse Engineering youtu.be/RAsr5ENhv88
Haswing Protruar 2.0 24V Trolling Motor – Battery Indicator Circuit youtu.be/tZmjgyAoL4c
Haswing Protruar 2.0 24V Trolling Motor – Battery Indicator Improvement youtu.be/7dKLdkXZMiQ
Full Fly-by-Wire Electric Outboard youtube.com/playlist?list=PLwq-2MnM58FKvpYgFXgNCjlKo14L0KI16
Full Fly-by-Wire Electric Outboard (4): Throttle Circuit & Code Test youtu.be/yEfVJVy8n8E
#reverseengineering #teardown #teardowns #haswing #trollingmotor #outboardmotor #outboard #robertssmorgasbord
I’m sorry, but I’ve got the buzzer wrong. Let me set the record straight …
↓↓↓ Complete description, time index and links below ↓↓↓
In the last video I stated, that it is a piezo buzzer, driven by the motor controller via an open drain/collector output, switched at 2.5kHz (link below). I’ve learned that this can’t be true (link below). So let’s find out how it really works.
First we have a look at my initial analysis and why the circuit I proposed can’t possibly work. Then we analyze the motor controllers buzzer output. Finally we determine and verify that’s in fact a DC buzzer, probably an electromagnetic one.
00:00 Intro – some of the statements I made were false
00:55 Piezo buzzers – why my idea could have never worked
03:50 Driver analysis – totem-pole or open collector/drain?
07:32 It’s a DC buzzer – with its own build in driver circuit
09:32 Wrap-up – never thought it could be a DC buzzer, bye
Teardowns youtube.com/playlist?list=PLwq-2MnM58FJPg01ooMBgy_CxDxAem0my
Haswing Protruar 2.0 24V Trolling Motor – Unboxing and First Impressions youtu.be/DSgi4pclBUA
Haswing Protruar 2.0 24V Trolling Motor – Teardown & Reverse Engineering youtu.be/I8f8282jB8g
Haswing Protruar 2.0 24V Trolling Motor – Further Teardown youtu.be/Fr-SQFcZ-08
Haswing Protruar 2.0 24V Trolling Motor – More Reverse Engineering youtu.be/RAsr5ENhv88
Haswing Protruar 2.0 24V Trolling Motor – Battery Indicator Circuit youtu.be/tZmjgyAoL4c
Haswing Protruar 2.0 24V Trolling Motor – Battery Indicator Improvement youtu.be/7dKLdkXZMiQ
Full Fly-by-Wire Electric Outboard youtube.com/playlist?list=PLwq-2MnM58FKvpYgFXgNCjlKo14L0KI16
Full Fly-by-Wire Electric Outboard (4): Throttle Circuit & Code Test youtu.be/yEfVJVy8n8E
#reverseengineering #teardown #teardowns #haswing #trollingmotor #outboardmotor #outboard #robertssmorgasbord
