Difference between revisions of "Lia"

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== Differences from Lisa/M ==
== Differences from Lisa/M ==


* 0.1" pitch connectors instead of molex picoblade
* 0.1" pitch through-holes instead of molex picoblade
* No CAN transceiver (footprint still present just not populated)
* No CAN transceiver (footprint still present just not populated) on [http://www.transition-robotics.com Transition Robotics]serial numbers LI1-001 through LI1-200 (populated on serial numbers ≥LI1-201)
* No I2C2 level shifter (footprint still present just not populated)
* No I2C2 level shifter (footprint still present just not populated)
* No 5V voltage regulator (footprint still present just not populated)
* No 5V voltage regulator (footprint still present just not populated)
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== Jumper Configuration ==
== 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. The descriptions below thus apply to both boards.
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.<br/>
 
See the [[Lisa/M_v2.0#Jumper_Configuration|Jumper Configuration section on the Lisa/M v2.0 page]].
The default configuration is UART3 VCC at V_IN, UART1/2/5 VCC at +3V3, with the V_SERVO servo voltage rail NOT connected to the autopilot V_IN rail, allowing one to power the autopilot and servos separately. The +5V regulator is NOT bypassed, allowing a regulated +5V on listed headers and for the CAN transceiver and I2C level shifter. The V_BATT connector is NOT connected to V_IN, so one can attach a battery voltage to the V_BATT pin to measure the battery voltage, if so desired.
 
<gallery widths=380px heights=205px>
Image:LisaM_V2_0_top_jumpers_and_leds.png | Lisa/M v2.0 Top Jumpers and LEDs
Image:LisaM_V2_0_bottom_jumpers.png | Lisa/M v2.0 Bottom Jumpers
</gallery>
<br style="clear:both">
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="2%" width="70%"
|+'''Power Jumper Configuration'''
!width="7%"|''Jumper''!!width="20%"|''Bus Connection''!!width="7%"|''Default''!!''Description''
|-
|JP1||SERVO_BUS to V_IN||OPEN||Connects servo header voltage rail SERVO_BUS to autopilot input voltage V_IN rail
|-
|JP2||V_BATT to V_IN||OPEN||Connects I2C1/CAN rail V_BATT to autopilot input voltage V_IN rail
|-
|JP3||V_IN to +5V||OPEN||Connects autopilot input voltage V_IN rail to autopilot +5V rail, bypassing onboard 5V supply
|}
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="2%" width="70%"
|+'''UART3 VCC Configuration'''
!width="7%"|''Jumper''!!width="20%"|''Bus Connection''!!width="7%"|''Default''!!''Description''
|-
|JP6||UART3_VCC to V_IN||style="background:black; color:white"|CLOSED||Connects UART3 connector VCC to autopilot input voltage V_IN rail
|-
|JP7||UART3_VCC to +3V3||OPEN||Connects UART3 connector VCC to autopilot +3V3 rail
|}
'''WARNING: UART3 GPS Connector is connected to V_IN, check your GPS input voltage before connecting!!!'''
 
'''WARNING: DO NOT CLOSE BOTH JP6 AND JP7 SIMULTANEOUSLY!!!'''
 
 
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="2%" width="70%"
|+'''UART2 VCC Configuration'''
!width="7%"|''Jumper''!!width="20%"|''Bus Connection''!!width="7%"|''Default''!!''Description''
|-
|JP4||UART2_VCC to V_IN||OPEN||Connects UART2 connector VCC to autopilot input voltage V_IN rail '''SEE WARNING BELOW'''
|-
|JP5||UART2_VCC to +3V3||style="background:black; color:white"|CLOSED||Connects UART2 connector VCC to autopilot +3V3 rail
|}
'''WARNING: UART2 RX is NOT 5V TOLERANT. Thus, while possible to connect UART2_VCC to V_IN, DO NOT ATTEMPT THIS. Only use JP5 (the default).
 
'''WARNING: DO NOT CLOSE BOTH JP4 AND JP5 SIMULTANEOUSLY!!!'''


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


{|border="1"  cellspacing="0" style="text-align:center" cellpadding="2%" width="70%"
{|border="1"  cellspacing="0" style="text-align:center" cellpadding="2%" width="70%"
|+'''UART1 and UART5 VCC Configuration'''
|+'''Lia UART1 and UART5 VCC Configuration'''
!width="7%"|''Jumper''!!width="20%"|''Bus Connection''!!width="7%"|''Default''!!''Description''
!width="7%"|''Jumper''!!width="20%"|''Bus Connection''!!width="7%"|''Default''!!''Description''
|-
|-
|JP8||UART1&5_VCC to V_IN||OPEN||Connects UART1 and UART5 connector VCC to autopilot input voltage V_IN rail
|JP8||UART1&5_VCC to V_IN||style="background:black; color:white"|CLOSED||Connects UART1 and UART5 connector VCC to autopilot input voltage V_IN rail
|-
|-
|JP9||UART1&5_VCC to +3V3||style="background:black; color:white"|CLOSED||Connects UART1 and UART5 connector VCC to autopilot +3V3 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!!!'''
'''WARNING: DO NOT CLOSE BOTH JP8 AND JP9 SIMULTANEOUSLY!!!'''


There are additional jumpers on the board for expert or developer configurations, please see [[Lisa/M_v20#Schematic|schematic]] and [[Lisa/M_v20#Downloads|layout]] for more information.
[[Category:Lisa]]

Latest revision as of 12:32, 21 November 2013

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

  • Lia V1.1 top side

  • Lia V1.1 bottom side

  • 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!!!

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