Rotary

Same Sky has created an absolute encoder family for motor shafts from 9 to 15.875mm (5/8inch). Called AMT25 and said to be accurate to ±0.2°, the family relies on the same in-house capacitive ASIC for sensing as all of its AMT series encoders, which is claimed to resist environmental particulates. Outputs options are 12 or 14bit, both over a bi-directional ...

Same Sky has released a family of 62 plastic knobs, designed for 6mm diameter D-cut shafts. All numbered SPK…, these offer: a variety of colours, diameters from 10 to 32.5 mm, heights from 8.5 to 19.45mm, ribbed or smooth surfaces, and compatibility with shaft lengths from 4.2 to 15.6mm. Use is foreseen with rotary potentiometers and encoders. Find the Same ...

Vishay has introduced a series of control knobs for its potentiometers, encoders and rotary switches. “Whether the user wears gloves or operates with bare hands, the knob’s haptic structure and pleasant grip surface reliably apply the necessary torque to the potentiometer shaft across all application situations,” claimed the company. The series is called ‘ACCK’, and includes round (11 types), pointer ...

EBE Sensors+Motion has revised its manual handwheel rotary encoder, designed for precise adjustment of machines. Inside the encoder, called HR100, the 100 detent ‘clicks’ are created by magnetic rather than mechanical means, and position sensing is via Hall magnetic detection rather than physical contacts. Output is the traditional A-B two-phase quadrature waveform, created by a circuit with new Hall sensors ...

Cambridge Integrated Circuits has introduced a non-contact rotary position sensing IC that can operate at 66,000rpm producing 1,000 quadrature cycles per revolution, or can work at resolutions up to 16,384AB cycle/rev. Edge rate up to 4.5MHz are possible, equating to 4,170rpm at 16bits, and up to 33,000 position sample/s. “33,000 measurements per second is over six times faster than our ...

ADI has announced an IC that can not only measure the angle of a nearby rotating magnet, but can count up to 46 complete turns even when the chip has no power. For those who like puzzles, look away for a couple of minutes to work out the mechanism for yourself, as it is going to be explained in the ...

TDK is aiming at automotive and industrial 360° magnetic angle sensing in high-reliability systems with a tunnel-magnetoresistance (TMR) IC. TAS8240 is designed to operate next to a rotating magnet and contains four pairs of TMR half bridges (four Wheatstone bridges) to provide four separated sine-cosine outputs. “Depending on system architectures, fail-operational concepts can be supported by the new sensor,” according ...

Micronas had created a pair of automotive-rated Hall effect magnetic angle sensors that work up to 150,000rpm. “Developers have the choice between two sensor models – HAL 3020 and HAL 3021 – for fast angle determination, with which they can meet the need for robust motor position detection and ISO 26262-compliant development. The components have differential or single-ended sine and ...

Adafruit has made an I2C interface for four rotary encoders. It comes in the form of a PCB with four footprints that accept one of the most common rotary encoder forms (Bournes PEC11 horizontal style), allowing the user to pick devices with the appropriate step-count per revolution, with or without a push switch. “The [pre-soldered] on-board microcontroller is programmed with ...

Anders has introduced a family of rotary switches that have a circular colour TFT-LCD in the middle, as well as a push button function. Available with 1.3, 2.1 or 2.47inch circular displays, the knobs are ~48, 76 or 92mm in diameter respectively. The company sees them being used in heating systems, industrial controls, IoT devices, boilers, white goods, fitness equipment ...