Interesting Chips and Sensors


3D Hall Effect Sensors


 










The 3mm long TLE493D I2C interface 3D Hall Effect Sensor $1.97






 The Infineon TLE493D is a bit of a cost breakthrough at under $2. Using 3 Hall Effect sensors in a single package, this chip can identify the position of a near magnetic field, that can for example make a longer lifespan replacement for precision continuous rotation potentiometers, that I used to see in aerospace surplus.  There is an Arduino support library available for the I2C interface devices (be sure you know the version your working with), there are 4 different part numbers for the TLE493D-W2B6 fast wake-up chip, whose only difference is their I2C address, allows 4 of the 6 pin sensors to be used on a single bus.

 • 3D magnetic flux density sensing of ±160 mT   (1 miliTeslas = 10 gauss).
 • Programmable flux resolution down to 65 μT (typ.)   (Earth is 35-70  μT).
 • X-Y angular measurement mode.
 • 12-bit data resolution.
 • Sample rate: up to  8.4 KHz.

3D-MS2GO Evaluation Board, runs Arduino (Sensor at the Pointy End) $28.75

Magnetic Control Demos that snap on the eval board, the button can be rotated and pressed (Cost more than the board does)


Here's a worthwhile Tutorial-Review of the eval board for the older TLV493D-A1B6 from 2016:
Tutorial and Overview of Infineon’s 3D Magnetic 2Go Kit


The Infineon Mega "Getting Started Box IoT" eval. kit $145

For the serious R&D department, there is the Mega evaluation kit with 12 boards and adapters, and a couple of 3D sensor input controls.
  Includes: TLV493D 3D sensor, Current Sensor, MEMS Microphone, Biometric & Hardware Security chip. 3D sensor breakout shield (in place of the 3D-MS2GO above) , 2 tiny XMC 2Go boards that run Arduino,  an Arduino format host for the eval shields and an ESP32-Wemos.

Adafruit has a breakout board they sell using the older chip rev for $5.95 (not in stock at the moment)
  they provide a Circuit Python driver and reference the Infineon Arduino lib.


There are a number of Angular Position Sensors (like incorporated in some $50 controls that resemble a potentiometer), some of these chips use a 14 bit resolution sensor array, some examples:
  AS5170,  MLX90363 (3D sensor, digital output),  MLX90363 (analog output), KMT36H,  TLE5011 (circa 2011),  TLI5012B.

There are a number of angular sensor chips and modules available on the Chinese surplus market.

MLX90333 module handle joystick sensor absolute position digital three-dimensional angle
 board $4.37 AliExpress)
MLX90333 module handle joystick sensor


CJMCU-1335 Hall Effect 360 Non-Contact X-Y Plane(2D) Angle Sensor, 12 bit resolution $10.08 Aliexpress

CJMCU-1335 Hall Effect 360





BLE Enery Harvesting Switch

On Semi  BLE-SWITCH001-GEVB Eval kit $14.63




Useful for situations like a home automation setup where it's difficult to wire up a wall switch,  one could employ this gadget which uses the force of a switch press to generate sufficient energy (2× min. 0.33 mWs) to send out a bluetooth message.  BLE-SWITCH001-GEVB , sources: Digikey, Mouser ($13.75)





 Trimatic Advanced Stepper Motor Controller Family, MANY (94) offerings at Digikey
                       (Recently Demonstrated at a meeting)

Demo Video showing whine free 3D Printer

6 Most Economical Models:

Advanced Stepper Motor Control:TMC2208 SILENTSTEPSTICK  $7.32 Digikey

Ultra-silent motordriver IC for two-phase stepper motors.  up to 2A coil current (peak)

MicroPlyer™, SpreadCycle™, StealthChop2™


Benefits of using StealthChop2:
 -Significantly improved microstepping with low cost motors 
 -Motor runs smooth and quiet
 -Absolutely no standby noise
 -Reduced mechanical resonance yields improved torque


TMC SILENTSTEPSTICK TMC2100 (2.5A) board  $7.98 Digkey
  • MicroPlyer™, SpreadCycle™, StealthChop™
TMC2130 $12.73   (2.5A)   
microstep table,  MicroPlyer™, CoolStep™, passive braking,  short detection,  SpreadCycle™,  Stall detection,  StallGuard2™,  StealthChop™

TMC2209 $14.70  (2A)
MicroPlyer™, CoolStep™, short&Stall detection,  SpreadCycle™, StealthChop2™, StallGuard4™

TMC5160 $15.00   High Power with External Transistors
MicroPlyer™, CoolStep™, passive braking, short detection, SpreadCycle™, Stall detection, StallGuard2™, StealthChop2™


BREAKOUTBOARD WITH TMC5160 $21.40  includes ext MOSFETS (AO4882 Dual-N)
( 2.8A continuous / 3.1A peak) 
TMC5160 Breakout Board





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