Marine GPS
About the Marine GPS PCB
Marine GPS 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 160 × 100 mm, with 107 components from 65 distinct parts.
Its main chip is the PIC18F25K22, from the PIC family. Other key parts include the TDA8541, MCP1703A, TPS560200, TPS54228 and 74lv126. By type, the board carries 27 connectors, 25 resistors, 24 capacitors, 9 ICs, 5 transistors and 2 fuses.
It belongs with the rf & radio, audio and displays & leds designs in this gallery.
From the project
Hardware and software for an opencpn-based chartplotter
Hardware and software for an opencpn-based chartplotter The kardware has been designed with kicad 4.0.x The chartplotter is built around a A20-based single-board computer from Olimex (https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXIno-LIME2/) and a 15" TFT full HD display also from Olimex (https://www.olimex.com/Products/OLinuXino/LCD/LCD-OLinuXino-15.6FHD)
Main components on the Marine GPS
Marine GPS bill of materials (BOM)
107 components, 65 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TDA8541 | SOIC-8-N | U201 |
| 1 | MCP1703A | SOT-223-Tto2 | U301 |
| 1 | TPS560200 | SOT-23-5 | U302 |
| 1 | TPS54228 | SOIC-8-1EP_3.9x4.9mm_Pitch1.27mm | U303 |
| 1 | PIC18F25K22 | DIP-28_W7.62mm_LongPads | U304 |
| 2 | 74lv126 | SOIC-14_3.9x8.7mm_Pitch1.27mm | U401, U402 |
| 1 | MAX3488E | SOIC-8_3.9x4.9mm_Pitch1.27mm | U403 |
| 1 | MCP2562 | DIP-8_W7.62mm | U501 |
| 1 | BC547 | TO-92_Molded_Narrow | Q201 |
| 3 | BSS138 | SOT-23 | Q401, Q501, Q502 |
| 1 | DMG2307L | SOT-23 | Q503 |
| 1 | 32.768Khz | CMR200T | Y301 |
| 1 | GPIO1 | A10_OLIMEXINO_LIME_SHIELD_1-YA-V36P-2X20-LF | CON101 |
| 1 | GPIO3 | A10_OLIMEXINO_LIME_SHIELD_1-YA-V36P-2X20-LF | CON102 |
| 1 | CONN_02X04 | Pin_Header_Angled_2x04 | P101 |
| 2 | CONN_02X02 | Pin_Header_Angled_2x02 | P102, P305 |
| 1 | CONN_01X04 | Pin_Header_Straight_1x04 | P103 |
| 1 | CONN_01X11 | Pin_Header_Straight_1x11 | P104 |
| 6 | CONN_01X02 | Pin_Header_Straight_1x02 | P105, P111, P201, P309, P311, P501 |
| 1 | CONN_01X06 | Pin_Header_Straight_1x06 | P106 |
Show 45 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CONN_01X19 | Pin_Header_Straight_1x19 | P107 |
| 1 | CONN_01X01 | Pin_Header_Straight_1x01 | P108 |
| 2 | CONN_01X05 | Pin_Header_Straight_1x05 | P109, P112 |
| 1 | CONN_01X03 | Pin_Header_Straight_1x03 | P110 |
| 2 | HE10-10 | HE10-10C | P113, P401 |
| 3 | CONN_01X03 | Pin_Header_Angled_1x03 | P114, P308, P310 |
| 2 | CONN_02X03 | Pin_Header_Angled_2x03 | P301, P304 |
| 1 | CONN_01X01 | Pin_Header_Straight_1x02 | P307 |
| 2 | CONN_01X02 | Pin_Header_Straight_1x02 | +5V301, +12V_DISPLAY301 |
| 1 | EuroBoard160mmX100mm | EuroBoard160mmX100mm | EU160 |
| 1 | 3A | Fuseholder5x20_horiz_SemiClosed_Casing10x22.5mm | F301 |
| 1 | 300mA | Fuseholder5x20_horiz_SemiClosed_Casing10x22.5mm | F302 |
| 1 | LIME2 | A20_OLIMEXINO_LIME_SHIELD | LIME2 |
| 1 | CONN_01X04 | minifit-4 | Power301 |
| 1 | 100K | CB10LV | RV201 |
| 1 | PWR | Pin_Header_Angled_1x02 | SW301 |
| 1 | CTN10K | Pin_Header_Straight_1x02 | TH301 |
| 2 | SMBJ16A | DO-214AB | TVS301, TVS302 |
| 2 | 1N4148 | Diode_DO-35_SOD27_Horizontal_RM10 | D301, D302 |
| 1 | 10µH | Choke_SMD_7.3x7.3_H4.5 | L301 |
| 1 | 4.7µH | Choke_SMD_10.4x10.4_H4.8 | L302 |
| 2 | 1µF25V | C_0805 | C201, C202 |
| 1 | 100µF25V | C_Radial_D6.3_L11.2_P2.5 | C203 |
| 1 | 100nF | C_0805 | C204 |
| 3 | 10µF25V | C_1210 | C301, C303, C308 |
| 5 | 1µF6.3V | C_0805 | C302, C306, C312, C501, C502 |
| 1 | 6.8nF | C_0603_HandSoldering | C304 |
| 4 | 10pF | C_0603_HandSoldering | C305, C313, C314, C315 |
| 2 | 10µF6.3V | C_1210 | C307, C403 |
| 1 | 100nF6.3V | C_0805 | C309 |
| 2 | 22µF6.3V | C_1210 | C310, C311 |
| 2 | 1µF6.3V | C_1210 | C401, C402 |
| 3 | 330 | Resistor_Horizontal_RM15mm | R201, R202, R203 |
| 2 | 10K | Resistor_Horizontal_RM15mm | R204, R309 |
| 2 | 100K | Resistor_Horizontal_RM10mm | R205, R304 |
| 1 | 22K | Resistor_Horizontal_RM10mm | R206 |
| 2 | 22K | Resistor_Horizontal_RM15mm | R207, R208 |
| 1 | 18K | Resistor_Horizontal_RM15mm | R301 |
| 1 | 62K | Resistor_Horizontal_RM15mm | R303 |
| 3 | 10K | Resistor_Horizontal_RM10mm | R305, R310, R311 |
| 2 | 10K | R_1210_HandSoldering | R306, R307 |
| 1 | 56K | R_1210_HandSoldering | R308 |
| 4 | 47K | Resistor_Horizontal_RM15mm | R401, R402, R403, R501 |
| 2 | 1K | Resistor_Horizontal_RM15mm | R404, R405 |
| 1 | 47K | Resistor_Horizontal_RM10mm | R502 |
Marine GPS design files
The KiCad project lives in the mbouyer/marine_chartplotter repository on GitHub; these links point at the commit this page was built from.
Marine GPS: common questions
What microcontroller does the Marine GPS use?
The Marine GPS is built around the PIC18F25K22, from the PIC family.
How big is the Marine GPS PCB?
The Marine GPS measures 160 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Marine GPS?
107 components, from 65 distinct parts. The full bill of materials is listed on this page.
Where can I download the Marine GPS design files?
From the mbouyer/marine_chartplotter repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Marine GPS 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 Marine GPS 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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