Lia

Lia is a lower cost version of Lisa/M first developed for inclusion with the Quadshot Mocha.

Differences from Lisa/M

• 0.1" pitch through-holes instead of molex picoblade
• No CAN transceiver (footprint still present just not populated) on Transition Roboticsserial numbers LI1-001 through LI1-200 (populated on serial numbers ≥LI1-201)
• No I2C2 level shifter (footprint still present just not populated)
• No 5V voltage regulator (footprint still present just not populated)
• No JTAG connector (footprint still present just not populated)
• Added servo power inline resistors (by default 0 ohm but can be changed to higher value for balancing the linear voltage regulators of the motor controllers)

Pictures

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  Lia V1.1 top side

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  Lia V1.1 bottom side

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  Lia V1.1 bottom side with Aspirin 2.1 nomag nobaro placed.

Jumper Configuration

There are a number of jumpers on Lia used to configure voltage levels and power input. Their locations and functions are identical to those on the Lisa/M v2.0.
See the Jumper Configuration section on the Lisa/M v2.0 page.

Note that the default states of JP8 and JP9 are reversed with respect to the defaults of Lisa/M v2.0; that is:

Lia UART1 and UART5 VCC Configuration

Jumper	Bus Connection	Default	Description
JP8	UART1&5_VCC to V_IN	CLOSED	Connects UART1 and UART5 connector VCC to autopilot input voltage V_IN rail
JP9	UART1&5_VCC to +3V3	OPEN	Connects UART1 and UART5 connector VCC to autopilot +3V3 rail

WARNING: DO NOT CLOSE BOTH JP8 AND JP9 SIMULTANEOUSLY!!!