Your shopping cart is empty or products are not available any more.
0 reviews / Write a review
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 (note: if you need it to be flush with that last side, you can carefully grind the board down a little and solder to the remaining half-holes). 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.
Note: 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.
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 kΩ 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.
Encoder A and B outputs of a magnetic encoder on a high-power (HP) micro metal gearmotor running at 6 V.
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, such as in the example below:
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.
This schematic is also available as a downloadable pdf (125k pdf).
The X-Band Motion Detector operates in the X-band frequency, at 10.525 GHz and indicates detected mo..
It is designed to be submersible in water, but it's always best to avoid long-term (over 1 hour at ..
These sensors are easy to use, they are basically resistors that change value based on how much thei..
The Sharp distance sensors are a popular choice for many projects that require accurate dis..
The QTR-3A reflectance sensor array is intended as a line sensor, but it can ..
The GP2Y0A60SZ distance sensor from Sharp offers a wide detection range of 4″ to 60″ (10 cm to ..
This methane gas sensor detects the concentration of methane gas in the air and ouputs its ..
The "poor man's" accelerometer/motion sensor! These spring-vibration switches are medium sensitivity..
This compact sonar range finder by Maxbotix detects objects from 0 to 6.45 m (21.2 ft) wit..
Using the MaKey MaKey you can make anything into a key (get it?) just by connecting a few alligator ..
This board is a compact (0.4″ × 0.9″) breakout board for ST’s LSM6DS33 inertial module, which featur..
This sensor can detect flexing or bending in one direction. They were popularized by being used in t..
This force-sensing resistor (FSR) from Interlink Electronics is a passive component that acts as a v..
Take your project portable with the included battery pack and stitch it into a final design with con..
These spring-vibration switches are high sensitivity non-directional vibration induced trigger switc..
Decode nearly any kind of 1D (striped) barcode in your project using this adorable compact barcode s..
An anemometer is a device used for measuring wind speed, and is a common weather station instrument...
The AM2302 is a wired version of the DHT22, in a large plastic body. It is a basic, low-cost digital..
This current sensor is a carrier board or breakout board for Allegro’s ACS711KLCTR-25AB-T Hall effec..
The eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies with the l..
This board is a compact (0.5″ × 0.9″) breakout board for ST’s L3GD20 three-axis digital-..
This is a bare wires bead-probe which can measure air or surface temperatures. Most inexpensive the..
DescriptionThe eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies..
For specific temperature-to-resistance, check the lookup table.
These are often ..
Description: A simple flex sensor 4.5" in length. As the sensor is flexed, the resistance acros..
These pressures can easily be converted to altitudes. The board has a 3.3 V linear regulator and int..
The Sensor Film Kit is a great new way to make custom-sized sensors out of force sensitive material...
Triple-axis analog accelerometer - for measuring motion and tilt
Force sensitive r..
The Leap Motion Controller is a fascinating new computer sensor that uses multiple cameras and IR li..
We've now got a wider range version of favorite triple-axis accelerometer - it even has an on-board ..
This current sensor is a carrier board or breakout board for Allegro’s ACS709LLFTR-35BB-T..
This current sensor is a carrier board or breakout board for Allegro’s ACS711KLCTR-12AB-T Hall effec..
Put a current meter anywhere with this very handy display. This panel meter requires a DC voltage to..
These lightweight brackets are made from 0.8mm-thick aluminum and are specifically designed to work ..
The pre-programmed Touch Board is Arduino-at-Heart, so your Arduino shields and code will work seeml..
Connect to any microcontroller or system with TTL serial, and send packets of data to take photos, ..
This flammable gas and smoke sensor detects the concentrations of combustible gas in the ai..
New! Version 3 comes with the latest module which has external antenna support and Pulse-Per-Second ..
This GPS shield works great with either UNO or Leonardo Arduinos and is designed to log data to an S..
Pulse Sensor Amped adds amplification and noise cancellation circuitry to the hardware. It's noticea..
The pre-installed filter (also sold separately if you want to convert your own camera) allows you t..
This set includes sensor boards and reflective wheels to add quadrature encoding to two mic..
Detects a wide range of colors and outputs data as 10-bit RGB (Red/Green/Blue) componen..
This Photo Transistor Light Sensor is a simple sensor that detects ambient light. It's kind of the o..
The Pixy CMUCam 5 is an image sensor with a powerful processor that you can program to only send the..
The Pololu QTR-1RC reflectance sensor carries a single infrared (IR) LED an..
The QTR-3RC reflectance sensor array is intended as a line sensor, but it ca..
Operating Voltage: 2.5 V to 5.5 V
Carrier Frequency: 38 kHz
Runs on 5V-16V power (if you need to run it off of 3V you can do that by bypassing the regulator, bu..
These spring-vibration switches are high sensitivity non-directional vibration induced trigger swit..
It's summer and you're sweating and your hair's all frizzy and all you really want to know is why th..
This is a pre-wired and waterproofed version of the DS18B20 sensor made with a PTFE wire cable. Hand..
The MLX90614 family of sensors use infrared thermopile detectors to determine the temperature of obj..
Wide range, low power temperature sensor outputs an analog voltage that is proportional to the ambie..
Note: This sensor needs a 4.7K ohm pull-up resistor. Make sure you have one in hand...
Description: The SparkFun Soil Moisture Sensor is a simple breakout for measuring the moisture ..
Description: Piezo elements come in handy when you need to detect vibration or a knock. You can..
Description: This basic piezo sensor from Measurement Specialties is often used for flex, touch..
1x Getting Started with Adafruit FLORA book
1x FLORA - Wearable electronic p..
This pressure sensor from Freescale is a great low-cost sensing solution for precision measurement o..
This pressure transducer has a range of 0 - 500 PSI (1723.69 kPa) and an accuracy..
This pressure transducer has a range of 0 - 10000 PSI (1723.69 kPa) and an a..
Description: A simple flex sensor 2.2" in length. As the sensor is flexed, the resistance acros..
Enter your Email and you will be notified once item will be again available.
We ship to the GCC and MENA regions.
Reliable and fast shipping to your door, quality assured.
Find us on Instagram
Just type @idea_link