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ModbusRTU-Test-Shield

CMB27·ModbusRTU-Test-Shield·src/ModbusRTU-Test-Shield.kicad_pcb

ModbusRTU-Test-Shield layout, top view — open source board by CMB27
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About the ModbusRTU-Test-Shield

ModbusRTU-Test-Shield is an open source PCB design by CMB27, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 68.6 × 53.3 mm, with 40 components from 20 distinct parts.

Other key parts include the SN65HVD3082EP and MAX232N. By type, the board carries 11 diodes, 9 resistors, 6 connectors, 6 capacitors, 4 switches and 2 ICs.

It belongs with the rf & radio and dev boards & breakouts designs in this gallery.

From the project

A shield for Arduino boards that provides an RS-485 transceiver, RS-232 transceiver, and a selection of buttons, lights, and knobs.

A shield for Arduino boards that provides an RS-485 transceiver, RS-232 transceiver, and a selection of buttons, lights, and knobs. This board was designed to aid in testing the ModbusRTUSlave and ModbusRTUMaster libraries.

- This shield is designed to work with both 5V and 3.3V Arduino boards. - A 3-position removable screw terminal is used as the RS-485 interface. - A RJ12 connector is used as the RS-232 inteface. The pinout of this connector is designed to make it compatible with Automation Direct products. - The potentiomter knobs can be easily removed so you can stack other shields on…

ModbusRTU-Test-Shield, from the project README
From the project README

Main components on the ModbusRTU-Test-Shield

SN65HVD3082EPMAX232N

ModbusRTU-Test-Shield bill of materials (BOM)

40 components, 20 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SN65HVD3082EP
RS-485 XCVR
Texas Instruments
U1
1
MAX232N
RS-232 XCVR
Texas Instruments
U2
1
SP-140520-08-001
GCT
J1
1
SP-140520-10-001
GCT
J2
1
SP-140520-08-001
GCT
J3
1
SP-140520-06-001
GCT
J4
1
5430438
Phoenix Contact
J5
1
87180-066LF
RJ12 CONNECTOR
Amphenol ICC (FCI)
J6
2
PT10MV10-103A2020-E-S
10K
Amphenol Piher Sensing Systems
RV1, RV2
1
B3F-1020
BUTTON1
Omron
SW1
1
B3F-1020
BUTTON2
Omron
SW2
1
B3F-1020
RESET
Omron
SW3
1
OS202011MS2QN1
C&K
SW4
7
151031YS06000
YEL
Würth Elektronik
D1, D2, D3, D4, D6, D7, D8
1
151031VS04000
GRN
Würth Elektronik
D5
2
BAT43-TAP
BAT43
Vishay
D9, D10
1
SB260S-E3/54
SB260S
Vishay
D11
6
ESS105M050AB2EA
1uF
KEMET
C1, C2, C3, C4, C5, C6
8
CFM14JT1K00
1K
Stackpole Electronics
R1, R2, R3, R4, R5, R6, R7, R8
1
CFM14JT10K0
10K
Stackpole Electronics
R9

ModbusRTU-Test-Shield design files

The KiCad project lives in the CMB27/ModbusRTU-Test-Shield repository on GitHub; these links point at the commit this page was built from.

ModbusRTU-Test-Shield: common questions

How big is the ModbusRTU-Test-Shield?

The ModbusRTU-Test-Shield measures 68.6 × 53.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ModbusRTU-Test-Shield?

40 components, from 20 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 ModbusRTU-Test-Shield design files?

From the CMB27/ModbusRTU-Test-Shield repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the ModbusRTU-Test-Shield design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which CMB27 chose for the repository.

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