HardLabs

SMRRC

DavidMFlynn·SerialMRRC·Node Board PCB/SMRRC.kicad_pcb

SMRRC PCB layout, top view — open source PIC board by DavidMFlynn

About the SMRRC PCB

SMRRC is an open source PIC PCB design by DavidMFlynn, published on GitHub under the MIT license. It is a 2-layer board measuring 60 × 60 mm, with 28 components from 17 distinct parts.

Its main chip is the PIC16F15345-I/SO, from the PIC family. Other key parts include the THVD1500 and L78L05_SOT89. By type, the board carries 8 resistors, 5 capacitors, 4 connectors, 4 diodes, 3 ICs and 2 jumpers.

It belongs with the robotics & motion designs in this gallery.

From the project

Serial Model Railroad Control

This is a set of PCBs and software to control a model railroad with RS485 data buss.

Anamation Controller, 8 servos Block Detector, detects voltage across diode/resistor Optical Detector, broken beam or reflected beam

When a command packet is received from RX1 (RS485): Source=any, Destination=Me: Parse and Process the command. Send any requested data back to the sender on TX1 (RS485). Source=any, Destination=Master: Retransmit on TX2 (USB) Source=any, Destination= other than Master or Me do nothing.

Main components on the SMRRC

THVD1500PIC16F15345-I/SOL78L05_SOT89

SMRRC bill of materials (BOM)

28 components, 17 distinct parts.

QtyPartRefs
1
THVD1500
U1
1
PIC16F15345-I/SO
U2
1
L78L05_SOT89
U3
1
Conn_01x08_Socket
J1
1
Conn_01x05
J2
1
Conn_01x03
J3
1
Conn_02x06_Odd_Even
J4
2
Jumper_2_Open
JP1, JP2
2
SW_Push
SW1, SW2
3
LED_Filled
D1, D2, D3
1
SMA
D4
4
0.1uf
C1, C2, C3, C5
1
10uf
C4
3
1K0
R1, R2, R3
2
47K
R4, R5
1
120
R6
2
10K
R7, R8

SMRRC design files

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

SMRRC: common questions

What microcontroller does the SMRRC use?

The SMRRC is built around the PIC16F15345-I/SO, from the PIC family.

How big is the SMRRC PCB?

The SMRRC measures 60 × 60 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SMRRC?

28 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the SMRRC design files?

From the DavidMFlynn/SerialMRRC repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the SMRRC design in my own project?

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

Can I test firmware for the SMRRC 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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