I have the same problem with my i2. If I touch just the wrong part of the frame on a cold day, it resets my Sanguinololu. I still haven't done anything to fix it.
In electronic design, ESD effects are reduced through careful grounding of the chassis and ports, and putting suppression circuits on signals going in and out of a chassis. The goal is to get the shock to dissipate safely away from the sensitive circuitry.
The i2 is problematic since the electronics are out in the open, the frame is often dangerously close to the controller and wires that connect to the controller (endstops, HBP, motors), and all of the frame metal components are electrically isolated from each other (and ground) by the printed connectors.
The easiest thing to reduce this is to earth parts of the frame that you frequently come in contact with. Wrap wire between threaded rods at the frame vertices so that they share a common ground. Run the ground separately to the power supply frame and not the controller, since at a few kV the ground connection between the Azteeg and the supply is no longer negligible.
In electronic design, ESD effects are reduced through careful grounding of the chassis and ports, and putting suppression circuits on signals going in and out of a chassis. The goal is to get the shock to dissipate safely away from the sensitive circuitry.
The i2 is problematic since the electronics are out in the open, the frame is often dangerously close to the controller and wires that connect to the controller (endstops, HBP, motors), and all of the frame metal components are electrically isolated from each other (and ground) by the printed connectors.
The easiest thing to reduce this is to earth parts of the frame that you frequently come in contact with. Wrap wire between threaded rods at the frame vertices so that they share a common ground. Run the ground separately to the power supply frame and not the controller, since at a few kV the ground connection between the Azteeg and the supply is no longer negligible.