Over 500,000 customers already trust us. With us you get:
same-day shipping for products marked “24h shipping”
our own service centre in Poland
30 days to return and free delivery in Poland from PLN 500
4.9/5 on TrustMate and 4.9/5 on Google (almost 4,000 reviews)
VAT invoice, leasing and instalments for businesses
For businesses
individual quote for larger quantities
VAT invoice
For schools and universities
orders based on requests for quotation
help with choosing kits for your lab
Magnetic Encoder Pair Kit for 20D mm Metal Gearmotors, 20 CPR, 2.7-18V - Pololu 3499
A pair of magnetic quadrature sensors, designed for installation in 20D motors from Pololu. It consists of a board with the Hall sensor and the plastic impeller with magnets, a set allows you to receive up to 20 impulses per rotation, it operates with a voltage from 2.7 V to 18 V.
We could not load the price.
The promotional price does not combine with quantity discounts.
Description
A pair of optical quadrature sensors, designed for installation in 20D mm motors from Pololu. The set consists of two boards with integrated sensors that use the Hall effect and two impellers with magnets. The set allows to obtain a resolution of 12 impulses per revolution, it is powered with the voltage ranging from 2.7 V to 18 V.
Sensors work exclusively withPololu 20D mm motors equipped bilateral, extended shaft. |
The operating principle of the encoder
Botland is an official distributor of Pololu electronics and robotics parts. Countless robots hold at least one component of this brand in their build. Our team guarantees that all Pololu products presented here are original.
Specification
- Supply voltage: from 2.7 V to 18 V
- Resolution: 20 impulses per revolution *
- Dimensions: 20 x 16.5 mm
- Weight: 1.2 g (one encoder)
Included:
- 2 x: board with Hall sensors
- 2 x: impeller with magnets
- 2 x board with Hall sensors
- 2 x impeller with magnets
* The given resolution is the number of impulses per revolution of the engine. To count the impulses per revolution of the output shaft (wheel), multiply the specified number by the selected position. For example, for engine with the 30:1 gearing with the mounted five blades, the resolution will be: 20 * 30 = 600 pulses per revolution of the output shaft with gear.
The size of the main board.
The distribution of the pins of the main board.
Installation and connection
The board with sensors are designed for direct soldering on the power pins at the rear of the engine. The corresponding alignment of the module is the key to receiving the output signal of the high quality. One of the ways of the board installation, is to solder one end, then the align the module and solder the second pin. It is necessary to avoid prolonged heating of the pins of the engine as it may damage the plastic case.
The mounting holes of the module are simultaneously power pins of the motor, connected to the M1 and M2 pins. OUT1, OUT2 pins are the quadrature outputs. Sensor's power supply must be connected between pins VCC and GND. Pins applied on the board have 2.54 mm pitch what allows you to connect with the connection cables.
Oscillogram of the signal from the encoders.
When the module is properly soldered, on an extended shaft must be applied the impeller with magnets. The distance between the board and the impeller, doesn't affect the signal quality.
Useful links
| Name | Value |
|---|---|
| Width | 7 cm |
| Height | 0.3 cm |
| Depth | 7 cm |
| Weight | 0.003 kg |
GLS
Shipping in 24 hours
from €8.07
Raben - pallet delivery
Delivery in 3–5 days, no inside delivery
from €96.75
The full delivery terms are on the page Delivery and payment.
30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
Complaints
If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
Be the first to ask a question about this product!
Instructions and documents
GPSR data
Product information
This product is a component intended for further assembly or prototyping. It is not a finished product within the meaning of the product safety regulations.
Products from the same category
See all
