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400 RPM 12V N20 MICRO METAL GEAR MOTOR 3MM SHAFT DIA O/P 10MM
400 RPM 12V N20 micro metal gear motor with 3mm shaft and 10mm output, ideal for high-speed micro-robotics and DIY projects.
400 RPM 12V N20 Micro Metal Gear Motor is a high-speed, compact motor designed for precision robotics, DIY electronics, and miniature automation projects. Operating at 12V DC, this N20 micro metal gear motor delivers 400 RPM output speed, providing fast, smooth, and reliable motion for small-scale applications.
It features a 3mm shaft diameter and 10mm output, ensuring efficient power transmission for micro-robotics, smart vehicles, small conveyor systems, and hobbyist electronics projects. The durable metal gearbox ensures stable operation, long-lasting performance, and precise control, making it perfect for students, makers, and DIY enthusiasts who need high-speed micro motor solutions.

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Mini Portable Virtual Laser Projection Keyboard and Mouse Wireless Bluetooth
- Compatible with Android, iOS, Windows and Mac all kinds of operation systems that can be used with any phone, tablet, PC and laptop for a smooth and fast way of text input.
- Built-in Bluetooth for connecting to other devices without complex wired troubles
- More stable and smarter
- Can change the mini USB port to micro USB port.Â
- With mini Bluetooth speakers, which support voice reporting and music playing
- 3 in 1 Function: Laser keyboard,Mouse and bluetooth speaker
- Good touch sensitivity
- The BEEP sound and brightness can be adjusted on the laser keyboard
Potentiometer Sensor Module
Text to Speech TTL Module (Serial to Speech)
-  Single row 0.1″ header for easy connection to a host system
- Power requirements: +5 VDC
- 30 mA idle
- 46-220 mA active (depending on speech parameters and output load)
- Â Communication: Asynchronous 9600 bps serial (8N1)
- Dimensions: 1.25″x1.5″x0.37″
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Text support rate is better
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 Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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 Voice effect optimization
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 Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes

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