Critical. Compact.
10 layer FR4 laminate, 10% impedance control, TI-AM3354 SoC, 512MB DDR3-800 SDRAM, 2x16GB eMMC flash, 1x Gigabit Ethernet, USB 2.0, HDMI…
Robust flight control.
Purpose:
This smaller single board computer acts as the core control unit for the LR-01 aircraft. It controls the rotors, coolant pumps, important sensors and communicates with external communications in conjunction with the supervisor.
All layers with no copper fill visible
Copper fill visible
Layer 1 copper
Layer 2 copper
Layer 3 copper
Layer 4 copper
Layer 5 copper
Layer 6 copper
Layer 7 copper
Layer 8 copper
Layer 9 copper
Layer 10 copper
Board Materials & Specifications
Laminate FR4 Layer count 10 Total thickness 1.75mm Length 97.79mm Width 82.55mm Finish Type HASL Copper Weight 35 micrometers Soldermask Color Standard Green Silkscreen Location Both Sides Silkscreen Color White Silkscreen Type LPI Impedance Matching 10% Stacked Microvias No Blind Vias No Buried Vias No Minimum Drill Diameter 0.15mm Minimum Annular Ring Thickness 0.1mm (adding 0.2mm to diameter) Smallest Trace Width 0.1016mm Smallest Spacing 0.0762mm Via In Pad Yes Via Plug None Stencil Top and bottom separate
Specific Initial Layer Stack
Impedance Control Stack
Trace Type Layer Trace Width (mils) Spacing (mils) Target Impedance (Ohms) Calculated Impedance (Ohms) Reference Layer Microstrip Differential 1 4 5 100 99.224 2 Microstrip Single Ended 1 6 6 50 52.2689 2 Stripline Single Ended 3 4 4 50 50.522 2 Stripline Single Ended 5 4 4 50 50.522 6 Stripline Single Ended 7 4 4 50 50.522 6