why's it got a pencil sharpener on the top?

Because it wouldn't fit on the bottom.

What are those blue connectors for? Can I see a connecting diagram or instructions of some sort?

The blue terminal blocks are for power connections. The 3-term block is for supply voltage, ground, and +5V out from on-board regulator. Each 2-term block is for a power circuit to a motor (voltage is same as supply). A search online for "l298n driver module" images gives a lot of useful connection diagrams. ST Microelectronics provides good technical documentation for the L298 IC, itself, which describes the power limitations.

I lose the voltage from 10v to 4.5v, as soon as I connect to motor controller. Any idea why it is happening and how to correct it?

I need a bit of context for your question. are you using a microcontroller with the L298? How many motors are you using? do you have a separate power supply for said source of controls? Are you using an arduino?

Is there a way for me to detect a stall using this driver?

No, there is no feedback from the motor to the driver. Possibly monitor the current used by the motor with a Hall Effect transducer and, if it exceeds a certain value, consider it stalled.

L298n Motor Drive Controller Board Module Dual H Bridge Dc

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

⚙️ Power your projects with precision and reliability — don’t get left behind!

PEAK CURRENT CHAMPION - Delivers up to 3A max current ensuring smooth torque and speed
RELIABILITY ENGINEERED - Large filter capacitors and diode protection for stable, damage-free operation
ROBUST VOLTAGE HANDLING - Supports up to 35V for high-performance motor control
DUAL H BRIDGE POWERHOUSE - Drive 2 DC motors or 1 stepper with precision and efficiency
ARDUINO READY INTEGRATION - Plug-and-play compatibility for seamless DIY and professional projects

The L298N Motor Drive Controller Board is a compact, dual H-bridge module designed for Arduino and other microcontroller projects. It supports driving one 2-phase or 4-phase stepper motor or two DC motors simultaneously, handling voltages up to 35V and peak currents of 3A. Equipped with large filter capacitors and freewheeling diode protection, it ensures stable and reliable motor control, making it a top choice for makers and professionals seeking efficient and durable motor driving solutions.

Specifications

ASIN	B014KMHSW6
Best Sellers Rank	#776 in Single Board Computers (Computers & Accessories)
Customer Reviews	4.6 4.6 out of 5 stars (398)
Date First Available	October 31, 2013
Item Package Quantity	1
Item Weight	0.704 ounces
Item model number	CECOMINOD012186
Manufacturer	Qunqi
Material	ABS
Part Number	MK-050
Product Dimensions	1.14 x 0.98 x 0.75 inches
Voltage	12 volts
Wattage	25 watts

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