Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Interface | SSI, PWM, Analog |
| Resolution | 12-bit (4096 positions) |
| Operating Voltage | 3.0V to 3.6V |
| Max Speed | 30,000 RPM |
| Accuracy | ±0.5° typical |
| Package Type | SSOP-16 |
| Magnet Included | Yes, Diametrically Magnetized |
| Temperature Range | -40°C to +125°C |
| Programming Method | OTP via Interface Pins |
| Application | Industrial Automation, Robotics |
Anonymous
Mar 25, 2026
Rating: 5/5
Excellent for university projects
Bought this for our final year thesis on autonomous navigation. The PWM output is easy to read with standard microcontrollers. The magnet alignment guide in the documentation was very helpful for beginners.
Anonymous
Mar 25, 2026
Rating: 5/5
Reliable in harsh environments
We deployed ten of these in a factory setting with significant vibration and temperature fluctuations. They have been running for six months without a single failure. The non-contact design is a huge plus for longevity.
Anonymous
Mar 15, 2026
Rating: 5/5
Perfect for robotic joint feedback
This sensor module works flawlessly with our custom robotic arm project. The 12-bit resolution provides smooth movement control, and the included magnet saved us sourcing time. Setup was straightforward using the SSI interface.
Anonymous
Mar 11, 2026
Rating: 4/5
Solid performance, good value
Compared to optical encoders, this magnetic solution is much more compact and resistant to dust. The only downside is that it is One-Time Programmable, so double-check your settings before burning them.
Anonymous
Mar 10, 2026
Rating: 5/5
Fast shipping and great product
Arrived well-packaged with the magnet securely attached to the demo board. Tested it immediately on a motor controller and the response time is instantaneous. Highly recommend for anyone needing rotary position data.
Anonymous
Mar 08, 2026
Rating: 4/5
Great precision, tricky initial config
The accuracy is impressive once you get the programming sequence right. Reading the datasheet is essential before starting. The analog output is very stable, though I wish the voltage range supported 5V directly without a regulator.
Q: What is the maximum air gap allowed between the sensor and the magnet?
A: For optimal accuracy, we recommend an air gap of 0.5mm to 1.0mm. The sensor can function up to 2.0mm, but linearity and accuracy may decrease slightly at larger distances.
Q: Can this sensor be reprogrammed after the initial setup?
A: No, the AS5040 features OTP (One-Time Programmable) memory. Once the configuration bits are written, they cannot be changed. Please verify all parameters before programming.
Q: Is the included magnet suitable for high-temperature applications?
A: Yes, the included diametrically magnetized magnet is rated for the same operating temperature range as the sensor (-40°C to +125°C) and retains its magnetic properties within these limits.
Q: Does this module support daisy-chaining multiple sensors?
A: Yes, when using the SSI interface, multiple AS5040 devices can be daisy-chained to reduce the number of microcontroller pins required. Refer to the datasheet section 7.3 for wiring details.
Q: What microcontroller voltage levels are compatible with the IO pins?
A: The IO pins operate at 3.3V logic levels. If you are using a 5V microcontroller, you must use level shifters or a voltage divider to prevent damage to the sensor module.
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