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4 layers100 × 55 mmAvdisplay cape, the printed circuit board in 3D

Kicad hardware design for Beaglebone cape intended for Avionics project. Dual CAN interface and power.

Size
100 × 55 mm
Copper layers
4
Thickness
1.6 mm
Parts
46
Nets
126
Pads
260
Tracks, vias
352, 56
Pours
6
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
3 Apr 2024
Updated
27 May 2024

Overview

Avdisplay cape is an open-source printed circuit board by gpgreen, from the gpgreen/avdisplay-cape repository on GitHub. It is a 4-layer board of 100 × 55 mm with 46 parts on 126 nets, routed with 352 tracks and 56 vias.

It is built around the MCP2551-I/SN-HG, CAT24C256LI and TXB0104PW, with the CDSOT23-T24CAN and PSMN4R3-30BL,118-VB among its other parts. Its parts include 13 resistors, 12 capacitors, 6 ICs, 6 connectors and 3 diodes. It belongs with the interfaces and adapters boards of this library.

Main components

5

README

README.md

Avdisplay Cape

Kicad design for beaglebone black cape. Provides Dual CAN bus & bus protection. Provides 4A of 5V power to the beaglebone black using dual offboard 1.5A switching power supplies. These are load balanced using a LTC4370 device. Since the project is also using a LCD display, only one of the beaglebone's dual CAN devices is available due to pin conflicts, so another external MCP2515 CAN controller connected via SPI is onboard.

Offboard power supplies

The design is intended to use two Sparkfun buck boost power supplies which use a TPS63070 device. The input range is 3-16V. The project is supplied from a 12V system. The output on the breakout boards is selected to 5V and each device connected to the board with the provided JST connectors. With a heatsink installed on each device, they are capable of providing 2A for a total of 4A. The 12V input should have diode protection and a fuse as those are not installed on either the buck-boost breakout boards or the cape.

View and Schematics

3D View

Schematics

Parts

46
QtyValueFootprintReferences
70.1 uFCapacitor_SMD:C_0603_1608MetricC101, C102, C105, C107, C108, C109, C112
65.6KResistor_SMD:R_0603_1608MetricR101, R102, R103, R104, R105, R106
2120Resistor_SMD:R_1206_3216MetricR109, R112
22.5mMy Custom Footprints:WSLP3921R110, R111
230pFCapacitor_SMD:C_0603_1608MetricC103, C104
239nFCapacitor_SMD:C_0603_1608MetricC110, C111
2CDSOT23-T24CANPackage_TO_SOT_SMD:SOT-23D101, D102
2MCP2551-I-SNPackage_SO:SOIC-8_3.9x4.9mm_P1.27mmU104, U106
2PSMN4R3-30BL,118Package_TO_SOT_SMD:TO-263-2Q101, Q102
10.18uFCapacitor_SMD:C_0603_1608MetricC106
110KResistor_SMD:R_0603_1608MetricR107
116 MHzCrystal:Crystal_SMD_HC49-SDY101
130.1KResistor_SMD:R_0603_1608MetricR108
1680Resistor_SMD:R_0603_1608MetricR113
1Address SelectorButton_Switch_THT:SW_DIP_SPSTx02_Slide_9.78x7.26mm_W7.62mm_P2.54mmSW101
1CAN TermButton_Switch_THT:SW_DIP_SPSTx02_Slide_9.78x7.26mm_W7.62mm_P2.54mmSW102
1CAN1Connector_JST:JST_EH_B4B-EH-A_1x04_P2.50mm_VerticalJ106
1CAN2Connector_JST:JST_EH_B4B-EH-A_1x04_P2.50mm_VerticalJ105
1CAT24C256Package_SO:SOIC-8_3.9x4.9mm_P1.27mmU102
1LEDLED_SMD:LED_0603_1608MetricD103
1LTC4370xMSPackage_SO:MSOP-16_3x4mm_P0.5mmU103
1MCP2515-xSOPackage_SO:SOIC-18W_7.5x11.6mm_P1.27mmU101
1P8Connector_PinHeader_2.54mm:PinHeader_2x23_P2.54mm_VerticalJ101
1P9Connector_PinHeader_2.54mm:PinHeader_2x23_P2.54mm_VerticalJ102
1SolderJumper_2_OpenJumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mmJP101
1TXB0104PWPackage_SO:TSSOP-14_4.4x5mm_P0.65mmU105
1VIN1Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_VerticalJ103
1VIN2Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_VerticalJ104

Questions

How big is the Avdisplay cape PCB?

It measures 100 × 55 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Avdisplay cape use?

46 parts, built around the MCP2551-I/SN-HG, CAT24C256LI, TXB0104PW and CDSOT23-T24CAN. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Avdisplay cape KiCad files?

From the gpgreen/avdisplay-cape repository on GitHub, at the commit this page was made from: the board is avdisplay-cape.kicad_pcb and its schematic avdisplay-cape.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Avdisplay cape design in my own project?

Its repository states no licence, so its author keeps all rights: ask gpgreen before reusing the design.

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