Strap is used in robots like line follower, as sensors, detecting the track as a black line on a white background. The module consists of three reflective sensors that contain the IR transmitting LED and receiver in the form of phototransistor. The output are the digital signals which can be read using any microcontroller with an A/C converter, including Arduino.
Between the sensors left is 9.5 mm space so that a strap was reliable on the tracks applied with the standard insulating tape with the width of 19 mm.
Strap QTR-3RC, similarly to the QTR-8RC module, has digital outputs. Reading the measurement data, is carried out by charging the capacitor (the indication of high status), and measuring the time of discharge of it through phototransistor. This option has the following advantages:
A typical sequence of the reading of sensor's values:
The product is compatible with Arduino
Each of phototransistors uses a capacitor and an auxiliary circuit that can read data from the sensors by measuring the time of discharge.
Current to each transmitting LED was set to 17 mA, what at powering with the voltage of 5 V makes that the average current consumption of the whole module is about 50 mA.
Diagram of the module QTR-3RC.
SAME DAY SHIPPING
Posting the payment for the order on our account on a business day up to 13:00 means sending the goods on the same day!
The time of payment depends on the hours of ELIXIR session of the sender's bank and the recipient of the transfer (more information on this subject, for example on the websitehttp://www.kiedy-przelew.pl/).
The table presents available forms of delivery in Poland
|9,90 PLN||17,90 PLN||1-3 days|
|14,90 PLN||22,90 PLN|
|12,90 PLN||-||1-3 days|
If the amount to pay for products exceeds 500 PLN