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USMR Engineering Board

DarmorGamz·Ultrasonic-Flow-Reader·Hardware/Board/Kicad Project Backups/DCA_USMR_230206_kicad/DCA_USMR_221115_kicad/DCA_USMR_sch.kicad_pcb

USMR Engineering Board layout, top view — open source Microchip SAM board by DarmorGamz

About the USMR Engineering Board

USMR Engineering Board is an open source Microchip SAM PCB design by DarmorGamz, published on GitHub under the Custom license license. It is a 4-layer board measuring 66 × 68.6 mm, with 55 components from 25 distinct parts.

Its main chip is the ATSAMD20E18, from the Microchip SAM family. Other key parts include the LD1117S33TR_SOT223, ATWINC1500-MR and ENC28J60. By type, the board carries 25 capacitors, 16 resistors, 4 ICs, 4 diodes, 2 connectors and 2 inductors.

It belongs with the sensors designs in this gallery.

From the project

Discover the innovative Ultra Sonic Flow Reader, a non-invasive device that provides real-time water flow monitoring in pipes using ultrasonic waves. Perfect for homeowners, residential, and industrial buildings, it cuts installation costs and minimizes risks compared to traditional inline methods.

This is an example of how you may give instructions on setting up your project locally. To get a local copy up and running follow these simple example steps.

Contributions are what make the open source community such an amazing place to learn, inspire, and create. Any contributions you make are greatly appreciated.

If you have a suggestion that would make this better, please fork the repo and create a pull request. You can also simply open an issue with the tag "enhancement". Don't forget to give the project a star! Thanks again!

USMR Engineering Board, from the project README
From the project README

Main components on the USMR Engineering Board

ATSAMD20E18LD1117S33TR_SOT223ATWINC1500-MRENC28J60

USMR Engineering Board bill of materials (BOM)

55 components, 25 distinct parts.

QtyPartRefs
1
ATSAMD20E18
U1
1
LD1117S33TR_SOT223
U2
1
ATWINC1500-MR
U3
1
ENC28J60
U4
1
25MHz
Y1
1
Conn_02x03_Counter_Clockwise
J1
1
Barrel_Jack_Switch
J3
1
1:1CT
TR1
4
LED
D1, D2, D3, D4
2
10uH
L1, L2
11
100nF
C1, C6, C9, C10, C11, C12, C13, C14 +3
4
10uF
C2, C5, C20, C24
1
1uF
C3
4
0.1uF
C4, C21, C22, C25
1
33nF
C7
2
1nF
C8, C23
2
18pF
C16, C17
1
1k
R1
2
330
R2, R3
1
10k
R4
Show 5 more
QtyPartRefs
1
1M
R5
2
330Ω
R6, R7
4
50Ω
R8, R9, R10, R11
4
75Ω
R12, R13, R14, R15
1
2.32kΩ
R16

USMR Engineering Board design files

The KiCad project lives in the DarmorGamz/Ultrasonic-Flow-Reader repository on GitHub; these links point at the commit this page was built from.

USMR Engineering Board: common questions

What microcontroller does the USMR Engineering Board use?

The USMR Engineering Board is built around the ATSAMD20E18, from the Microchip SAM family.

How big is the USMR Engineering Board?

The USMR Engineering Board measures 66 × 68.6 mm, has 4 copper layers and is 4.69 mm thick.

How many components are on the USMR Engineering Board?

55 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the USMR Engineering Board design files?

From the DarmorGamz/Ultrasonic-Flow-Reader repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the USMR Engineering Board design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the USMR Engineering Board without the hardware?

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

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