HardLabs

Control main

mbouyer·canbus_autopilot·hardware/control-main.kicad_pcb

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

About the Control main PCB

Control main 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 71.1 × 72.4 mm, with 27 components from 19 distinct parts.

Its main chip is the PIC18F2XK80, from the PIC family. Other key parts include the UA78M05, UA78M33 and MCP2562. By type, the board carries 6 connectors, 6 capacitors, 4 ICs, 4 switches, 2 resistors 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 Control main

UA78M05UA78M33PIC18F2XK80MCP2562

Control main bill of materials (BOM)

27 components, 19 distinct parts.

QtyPartRefs
1
UA78M05
U1
1
UA78M33
U2
1
PIC18F2XK80
U3
1
MCP2562
U4
1
CONN_2
P1
1
CONN_6
P2
2
CONN_4
P3, P4
2
CONN_5
P5, P6
1
ROTARY_ENCODER
E1
1
CONN_3
K1
1
Val**
PIN_ARRAY_1
1
PKM13EPYH4000-A0
SP1
4
SW_PUSH
SW1, SW2, SW3, SW4
1
DIODESCH
D1
3
47uF
C1, C2, C6
1
10uF
C3
2
100nF
C4, C5
1
1.5K
R1
1
10K
R2

Control main 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.

Control main: common questions

What microcontroller does the Control main use?

The Control main is built around the PIC18F2XK80, from the PIC family.

How big is the Control main PCB?

The Control main measures 71.1 × 72.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Control main?

27 components, from 19 distinct parts. The full bill of materials is listed on this page.

Where can I download the Control main 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 Control main 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 Control main 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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