User manual

ZEUS user manual

Issue E

This jumper is used to disconnect the backup battery to prevent it from draining.

JP2 Description

Battery connected

Battery disconnected (default)

JP3 – LCD logic supply selection

Connector: 3-way, 2.54mm (0.1") single row through-hole header

Pin Signal name

1 +5V

2 LCD Logic Supply

3 +3V3

This jumper selects the supply voltage for the LCD logic supply.

JP3 Description

Supply LCD Logic with 5V

Supply LCD Logic with 3.3V (Default)

If the LCD requires a 5V supply, please refer to the

LCD datasheet to ensure that the display is

compatible with 3.3V logic.