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MGMS PCB-PcbDoc

liu2g·mgms·design/sensor-module/kicad-port/MGMS_PCB-PcbDoc.kicad_pcb

MGMS PCB-PcbDoc layout, top view — open source AVR/Arduino board by liu2g
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About the MGMS PCB-PcbDoc

MGMS PCB-PcbDoc is an open source AVR/Arduino PCB design by liu2g, published on GitHub under the MIT license. It is a 2-layer board measuring 96 × 71.4 mm, with 40 components from 24 distinct parts.

Its main chip is the Arduino 3.3v regulator, from the AVR/Arduino family. Other key parts include the Battery Protection IC for LiPo, MOSFET 2 N-CH 20V 6.5A 8TSSOP, Arduino ATMEGA328 Chip, Single Bus 3-State Buffer and XBEE 3 SMD. By type, the board carries 13 capacitors, 8 ICs, 6 resistors, 5 connectors, 1 transistor and 1 diode.

It belongs with the iot & wireless, power & battery and rf & radio designs in this gallery.

From the project

Modular Garden Monitoring System - Senior Design Project

Detailed component list see Bill of Material.

Following figures demonstrate a 3D mockup of the device as well as the alpha-prototype. The PCB was designed in such a way that it could tightly fit into a handhold-sized weatherproof enclosure, interfaced with a similar-sized solar panel and lithium-ion battery pack. The system's sunlight sensor and radio antenna are cautiously positioned to avoid being obstructed by other components.

MGMS PCB-PcbDoc, from the project README
From the project README

Main components on the MGMS PCB-PcbDoc

Battery Protection IC for LiPoMOSFET 2 N-CH 20V 6.5A 8TSSOPArduino 3.3v regulatorArduino ATMEGA328 ChipSingle Bus 3-State BufferXBEE 3 SMDUsed on Pololu step up regulator board

MGMS PCB-PcbDoc bill of materials (BOM)

40 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
800mA Standalone linear Li-ion charger with thermal regulation
U1
1
Battery Protection IC for LiPo
U2
1
MOSFET 2 N-CH 20V 6.5A 8TSSOP
U3
1
Arduino 3.3v regulator
U4
1
Arduino ATMEGA328 Chip
U5
1
Single Bus 3-State Buffer
U6
1
XBEE 3 SMD
U7
1
Used on Pololu step up regulator board
U8
1
Phototransistor, ALS-PT19
Q1
2
2 Pos Molex Microblade
J1, J2
3
Connector, 2.5MM, 4 pos Singlel Row Header - Right Angle
J3, J4, J5
4
Mounting Hole, 2-56 Pan Head, Close Fit Hole
MH1, MH2, MH3, MH4
1
16MHz Oscillator
XTAL1
1
Diode S1B-13-F
D1
1
Inductor SMT, 27nH, Wire-wound Ceramic, 0402HP
L1
2
CAP, 1.0uF, 50V, 10%, X7R, 0603(1608M)
C1, C10
4
CAP, 100nF, 100V, 10%, X7R, 0603(1608M)
C2, C3, C6, C13
3
CAP, 10uF, 10V, 15%, X5R, 0603(1608M)
C4, C7, C9
4
CAP, 0.1uF, 25V, 10%, X7R, 0402(1005M)
C5, C8, C11, C12
1
RES_1.2K_0.1%_0.1W_0603
R1
Show 4 more
QtyPartRefs
2
RES_10.0K_1%_0.33W_0603
R2, R4
1
RES_1.00M_0.1%_0.1W_0603
R3
1
RES_100K_0.1%_0.1W_0603
R5
1
RES_100_0.1%_0.1W_0603
R6

MGMS PCB-PcbDoc design files

The KiCad project lives in the liu2g/mgms repository on GitHub; these links point at the commit this page was built from.

MGMS PCB-PcbDoc: common questions

What microcontroller does the MGMS PCB-PcbDoc use?

The MGMS PCB-PcbDoc is built around the Arduino 3.3v regulator, from the AVR/Arduino family.

How big is the MGMS PCB-PcbDoc?

The MGMS PCB-PcbDoc measures 96 × 71.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MGMS PCB-PcbDoc?

40 components, from 24 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the MGMS PCB-PcbDoc design files?

From the liu2g/mgms repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the MGMS PCB-PcbDoc design in my own project?

Yes, under the terms of its MIT license, which liu2g chose for the repository.

Can I test firmware for the MGMS PCB-PcbDoc without the hardware?

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

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