HardLabs

Command

mbouyer·canbus_autopilot·hardware/command.kicad_pcb

Command PCB layout, top view — open source PIC board by mbouyer

About the Command PCB

Command is an open source PIC PCB design by mbouyer, published on GitHub under the BSD-2-Clause license. It is a 2-layer board measuring 69.9 × 84.8 mm, with 34 components from 23 distinct parts.

Its main chip is the PIC18F2XK80, from the PIC family. Other key parts include the UA78M05, MCP2562 and VNH5019A. By type, the board carries 13 resistors, 7 capacitors, 5 connectors, 4 ICs, 1 transistor and 1 relay.

From the project

canbus-connected marine autopilot

These parts are built around a pic18f26j50, for its low power and native can support. The CAN protocol is based on J1939 and reuses NMEA2000 PGNs when possible.

There is also wxpilot, a wxwidget/socketcan utility which allows to show and change some of the autopilot's parameters from a unix computer (see my marine_charplotter repository)

The display unit can also decode and display navigation PGNs sent by my nmea2000_pi OpenCPN plugin.

Main components on the Command

UA78M05PIC18F2XK80MCP2562VNH5019A

Command bill of materials (BOM)

34 components, 23 distinct parts.

QtyPartRefs
1
UA78M05
U1
1
PIC18F2XK80
U2
1
MCP2562
U3
1
VNH5019A
U4
1
FDD8780
Q1
1
CONN_6
P1
2
CONN_2
P4, P7
2
CONN_4
P5, P6
1
CONN_3
K1
1
Val**
PIN_ARRAY_1
1
PKM13EPYH4000-A0
SP1
1
LED
D1
2
47uF
C1, C6
1
10uF
C2
3
100nF
C3, C4, C5
1
560uF
C7
2
1.5K
R1, R12
1
330
R2
2
3.3K
R3, R4
5
1K
R5, R6, R7, R9, R10
Show 3 more
QtyPartRefs
1
10K
R8
1
1-K
R11
1
10K
R13

Command design files

The KiCad project lives in the mbouyer/canbus_autopilot repository on GitHub; these links point at the commit this page was built from.

Command: common questions

What microcontroller does the Command use?

The Command is built around the PIC18F2XK80, from the PIC family.

How big is the Command PCB?

The Command measures 69.9 × 84.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Command?

34 components, from 23 distinct parts. The full bill of materials is listed on this page.

Where can I download the Command design files?

From the mbouyer/canbus_autopilot repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Command design in my own project?

Yes, under the terms of its BSD-2-Clause license, which mbouyer chose for the repository.

Can I test firmware for the Command without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug PIC firmware against it before you order a PCB.

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