then this click is counting up and the accumulator in the control board must be incremented. If the B signal leads the A signal, then this is counting down and the accumulator from the board must be decremented. When at any point the control system needs to know the current position of the control rod, it will access the accumulator value that is being modified by the control boards. Figure 3.1.2.1: Quadrature Signal A very fast embedded processor will be required to keep track of the encoder’s values, likely this board will use a processor like the Arduino or the Cypress system’s processor. This processor would be fed the input values and keep track of different counters. The quadrature method is very common and there are numerous products of varying quality which all output the same signal. This opens up the option of many different encoders to purchase for this subsystem. A quick comparison of products follows. MakerBot Linear Encoder v1.2 The MakerBot line is built for roboticists. The core of this board is the AS5306 chip. This particular board is set up to be a linear encoder, as opposed to all other options here which are rotational encoders. This method works by using a magnetic strip which is moved over a static sensor which reads the magnetic field changes. It takes this value and creates the Quadrature encoding to send to the PCB. This is convenient for the foosball table application because it would be easy to attach to the linear actuator system. However, for obvious reasons, this would not be possible to use for rotational encoding. Website: Features and Specifications Resolution: 15 microns Voltage: 5V Length: 12 inch magnetic strip Cost: $50.00 US Digital Miniature Optical Encoder US Digital is a well-known and well trusted distributor of electronics. The applications for this tiny encoder chip are well beyond just the industrial section, including hobbyists and roboticists. This option is a rotational optical encoder, meaning that it has a shaft which
then this click is counting up and the accumulator in the control board must be incremented. If the B signal leads the A signal, then this is counting down and the accumulator from the board must be decremented. When at any point the control system needs to know the current position of the control rod, it will access the accumulator value that is being modified by the control boards. Figure 3.1.2.1: Quadrature Signal A very fast embedded processor will be required to keep track of the encoder’s values, likely this board will use a processor like the Arduino or the Cypress system’s processor. This processor would be fed the input values and keep track of different counters. The quadrature method is very common and there are numerous products of varying quality which all output the same signal. This opens up the option of many different encoders to purchase for this subsystem. A quick comparison of products follows. MakerBot Linear Encoder v1.2 The MakerBot line is built for roboticists. The core of this board is the AS5306 chip. This particular board is set up to be a linear encoder, as opposed to all other options here which are rotational encoders. This method works by using a magnetic strip which is moved over a static sensor which reads the magnetic field changes. It takes this value and creates the Quadrature encoding to send to the PCB. This is convenient for the foosball table application because it would be easy to attach to the linear actuator system. However, for obvious reasons, this would not be possible to use for rotational encoding. Website: Features and Specifications Resolution: 15 microns Voltage: 5V Length: 12 inch magnetic strip Cost: $50.00 US Digital Miniature Optical Encoder US Digital is a well-known and well trusted distributor of electronics. The applications for this tiny encoder chip are well beyond just the industrial section, including hobbyists and roboticists. This option is a rotational optical encoder, meaning that it has a shaft which
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