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PREMIUM 3688
Premium 3688 advanced STEM electronics kit with 3,688 components for professional learning, experimentation, and prototyping.
Premium 3688 is a complete, high-end DIY learning and application kit designed for advanced electronics education, innovation, and professional-level prototyping. With an extensive set of 3,688 components/build elements, this premium version enables users to design, experiment, and implement a vast range of electronic circuits and DIY projects.
Built for engineering students, makerspaces, R&D labs, and advanced STEM learners, the kit supports in-depth learning, complex system development, and real-world applications. The Premium 3688 edition offers unmatched versatility, scalability, and hands-on experience, making it ideal for long-term learning and professional use.

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- Firmware:Â GRBL
- Modular stepper motor drivers:Â 3
- Limit switches:Â 6
- Micro-stepping:Â 1/16
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- Uses removable Pololu A4988 compatible stepper drivers. (A4988, DRV8825, and others) (Not Included)
- Jumpers to set the Micro-Stepping for the stepper drivers. (Some drivers like the DRV8825 can do up to 1/32 micro-stepping )
- Compact design.
- Runs on 12-36V DC. (At the moment only the Pololu DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.)
- Please note that this is an unassembled kit and needs soldering.
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-  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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