Codificadores de Rueda DFRobot para DFRobot 3PA y 4WD Rovers (2pk)

DFRobotSKU:RB-Dfr-46
Número de fabricante: SEN0038

Precio  :
Precio de oferta €14,92

Impuesto incluido

Envío calculado al finalizar la compra

Stock  :
Solo quedan 2 unidades

Pagos y Seguridad

Métodos de pago

Apple Pay Mastercard PayPal Visa

Su Información de Pago se procesa de forma segura. No almacenamos los datos de la tarjeta de crédito ni tenemos acceso a la información de su tarjeta de crédito.


Seguridad

Descripción

  • Voltaje: + 5V
  • Los codificadores están diseñados para DFRobot 3PA y 4WD Rovers
  • Puede darle el grado de rotación de las ruedas
  • Incluye codificadores, tubo de plástico, junta mediada por papel, etc.

Los Codificadores de Rueda DFRobot para DFRobot 3PA y 4WD Rovers (2pk) están diseñados para los rovers 3PA y 4WD del fabricante. Puede darle el grado de rotación de las ruedas. El codificador utiliza un método sin contacto para convertir las señales de desplazamiento angular. Ajuste óptimo con el Motor Micro DC de Engranaje. Incluye codificadores, tubo de plástico, junta mediada por papel, etc.

Codificadores de Rueda DFRobot para DFRobot 3PA y 4WD Rovers (2pk) - Hacer Click aquí para Agrandar

  • Voltaje: + 5V
  • Corriente: <20mA
  • Resolución: 20 PPR
  • Peso: 20g

Customer Reviews

Based on 7 reviews
57%
(4)
29%
(2)
14%
(1)
0%
(0)
0%
(0)
K
Kevin
Medium resolution but easy to set up

Install requires some work to space the encoder wheels with the plethora of washers and spacers provided. I have a different take on the discussion by another reviewer on the interrupts. You do get different counts based on the pin you connect to, but that is due to the Atmega interrupt scheme. Different chips have different interrupt architectures. Leonardo boards use the 32U4 chip, which have a dedicated interrupt signal on pins 2 and 3, while the UNO uses the 328 chip, which does not. If a pin does not have a dedicated interrupt, it gets lumped into a 'pin-change' interrupt with all the other digital pins that don't have dedicated interrupts. When I used a UNO board and pins 2 and 3, I would get 'cross-talk' between the wheels. It seems that the Arduino library gets the interrupt and tries to decide which registered callbacks should be invoked base on the pin states. If there are more than one 'pin-change' interrupt callback, it seems to be able to get confused. I solved this by manually checking for a pin change-of-state in the interrupt handlers. After doing this (and adding some debounce code as well), I got very consistent count numbers.

S
Sydney
Encoders work great but there is some confusing output

These are a little tricky to install on an assembled robot but the instructions are perfect. Once you try to use encoders comes the confusion, at least when using an Arduino mega. I found different readings per wheel and thought there was an encoder problem until I ran an experiment with different intercepts. Someone should write a tutorial on using encoders and intercepts. Here is what I found when using the same encoder at the same speed on different intercept pins: right encoder on intercept 0 (pin 2) Count = 148 right encoder on intercept 3 (pin 20) Count = 28 right encoder on intercept 2 (pin 21) CountA= 28 right encoder on intercept 4 (pin 19) Count = 1276 right encoder on intercept 5 (pin 18) Count = 908 Once you understand this you can make use of whatever formulas per encoder you need to achieve speed or distance results for the wheel pairs.

P
Peter
Couple de problèmes avec ces

1. Vous ne pouvez pas installer le panneau arrière sur la plate-forme DFRobot 4WD Mobile avec ces capteurs fixés aux moteurs arrière. Je ferai éventuellement mon propre panneau arrière imprimé en 3D pour résoudre ce problème et la plaque supérieure / inférieure maintiendra le robot en place sans le panneau pour le moment. 2. Il y a beaucoup de redéclenchements / rebondissements du signal et pour me rapprocher du 20 CPR, j'utilise un anti-rebond glissant. Ignorez le temps de 12 000 us à vitesse maximale et supérieur pour les vitesses plus faibles. Je ne sais pas à quel point ces capteurs seront utiles pour surveiller avec précision la distance / la vitesse

D
David
inexpensive but effective

Seem to do the job. Gives 5v signal when photo interrupter is blocked by the disk. So far they seem to work reliably. Does not mount on RB-Sbo-02 GM3 - Gear Motor 3 - 90 degree Shaft without modification.

D
David
pas cher mais efficace

Semble faire le travail. Donne un signal 5v lorsque l’interrupteur photo est bloqué par le disque. Jusqu'à présent, ils semblent fonctionner de manière fiable. Ne pas monter sur le RB-Sbo-02 GM3 - Motoréducteur 3 - Arbre à 90 degrés sans modification

Estimar envío

También le puede interesar