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EK1112296 - Датчики Magnetic Encoder Pair Kit for Micro Metal Gearmotors
Код товара: EK1112296     Дата внесения в каталог: 25/11/2014

Датчики Magnetic Encoder Pair Kit for Micro Metal Gearmotors

Изготовитель: POLOLU
Исполнение:

Свой заказ Вы можете также оформить и по телефону: +7 495 543 47 96. При заказе называйте код товара: EK1112296
Датчики Magnetic Encoder Pair Kit for Micro Metal Gearmotors


Magnetic Encoder Pair Kit for Micro Metal Gearmotors, 12 CPR, 2.7-18V

This sensor system is intended for users comfortable with the physical encoder installation. It only works with micro metal gearmotors that have extended back shafts.
Add quadrature encoders to your micro metal gearmotors (extended back shaft version required) with this kit that uses a magnetic disc and hall effect sensors to provide 12 counts per revolution of the motor shaft. The sensors operate from 2.7 V to 18 V and provide digital outputs that can be connected directly to a microcontroller or other digital circuit.

Overview
This kit includes two dual-channel Hall Effect sensor boards and two 6-pole magnetic discs that can be used to add quadrature encoding to two micro metal gearmotors with extended back shafts (motors are not included with this kit). The encoder board senses the rotation of the magnetic disc and provides a resolution of 12 counts per revolution of the motor shaft when counting both edges of both channels. To compute the counts per revolution of the gearbox output shaft, multiply the gear ratio by 12.

This compact encoder solution fits within the 12 mm ? 10 mm cross section of the motors on three of the four sides, and it only extends 0.6 mm past the edge of the fourth side. The assembly does not extend past the end of the extended motor shaft, which protrudes 5 mm beyond the plastic end cap on the back of the motor.

Pinout and installation
The encoder board is designed to be soldered directly to the back of the motor, with the back shaft of the motor protruding through the hole in the middle of the circuit board. One way to achieve good alignment between the board and the motor is to tack down the board to one motor pin and to solder the other pin only when the board is flat and well aligned. Be careful to avoid prolonged heating of the motor pins, which could deform the plastic end cap of the motor or the motor brushes. Once the board is soldered down to the two terminals, the motor leads are connected to the M1 and M2 pads along the edge of the board; the remaining four pads are used to power the sensors and access the two quadrature outputs:
The sensors are powered through the VCC and GND pins. VCC can be 2.7 V to 18 V, and the quadrature outputs A and B are digital signals that are either driven low (0 V) by the sensors or pulled to VCC through 10 k? pull-up resistors, depending on the applied magnetic field. The sensors_ comparators have built-in hysteresis, which prevents spurious signals in cases where the motor stops near a transition point.

The board_s six pads have a 2 mm pitch, so they do not work with common 0.1? connectors. One option for connecting to the board is to solder in individual wires.

Alternatively, you can solder a 2mm-pitch connector to the board. The examples below show a male header, which gives you the option of making a detachable cable terminated by a 6-pin 2mm-pitch female header. If the pins are angled over the motor, as shown in the picture below, they will just barely protrude through the holes in the board. Note that in this orientation, there is room to plug in a female header even when our extended micro metal gearmotor bracket is being used.

If the pins are pointed away from the motor, they will need to be angled so that they sufficiently clear the magnetic disc. With a decent soldering iron, it is possible to solder them in this orientation even after the encoder has been installed on the motor.

Once the board is soldered to the motor, the magnetic encoder disc can be pushed onto the motor shaft. One easy way to accomplish this is to press the motor onto the disc while it is sitting on a flat surface, pushing until the shaft makes contact with that surface. The size of the gap between the encoder disc and the sensor board does not have a big impact on performance as long as the motor shaft is at least all the way through the disc.

Dimensions
Size: 10.6 mm ? 11.6 mm
Weight: 1g

General specifications
Minimum operating voltage: 2.7 V
Maximum operating voltage: 18 V

Датчики Magnetic Encoder Pair Kit for Micro Metal Gearmotors. Описание в формате PDF

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Цена:
От: 839.73 руб. за 1 шт.

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  Свой заказ на Датчики Magnetic Encoder Pair Kit for Micro Metal Gearmotors
  Вы можете также оформить и по телефону: +7 495 543 47 96.
  При заказе называйте код товара: EK1112296
 Купившие этот товар также купили:
Двусторонняя плата адаптер переходник для микросхем TSSOP14 SSOP14 MSOP14 SOP14 в DIP14
Двусторонняя плата адаптер переходник для микросхем TSSOP14 SSOP14 MSOP14 SOP14 в DIP14

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Вы можете купить Датчики Magnetic Encoder Pair Kit for Micro Metal Gearmotors как за наличный расчёт, так и по безналичному расчёту ( т.н. безналу, перечислению). Для этого Вам надо либо оформить заказ на нашем сайте, указав в примечании реквизиты, либо прислать письмо с точным указанием кода EK1112296 на Датчики Magnetic Encoder Pair Kit for Micro Metal Gearmotors, желаемого количества и реквизитов Вашей организации. Счета по безналичному расчёту выписываются от суммы 1000 рублей.
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