I2C daughterboard& Serial I/O mount points.support for iMXRT1062 quadrature decoding.Otherwise the open cable makes a great antenna :) You might add a Shottky or ideally a TVS diode clamp to protect the opamp's output from exceeding VDD+0.5V or VSS -0.5V. The opamp should be protected from a situation where the far end of the cable is potentially disconnected from the motor drive. Running isolated traces under the Teensy is OK as long as you can maintain spacing. The IPC2221A spec is 2.5 mil spacing for an uncoated PCB 500V. 2x line voltage will do just fine, call it 500V. You don't need Hi-Pot levels of isolation here. Connection to a USB-connected GRBL board will allow a ground loop which can cause signal integrity issues, and potentially damage the cable, board or computer. But that voltage is referenced to earth ground. Some motor drives (ie, KB Electronics KBIC DC PM drives) can be speed controlled with a DC voltage. Host USB support - Not important to me.
12V/24V are also more common values for industrial sensors and will allow the use of standard relays, lit switches, inductive sensors, and the like. However, isolating the supplies will prevent the potential for ground loops and high voltage getting to the board and/or user, which is reason enough to do it.
2.80 bldc tool how to#
You may want to add a section to the manual about how to properly shield & ground cables and equipment, as it is a common source of user error.
Shielded and properly grounded sensor cables are still required. It's a safety thing rather than a noise thing. Adding isolated off-board power is not going to buy you much, if anything, in the way of noise immunity.