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SMRRC SwitchAndSignal

DavidMFlynn·SerialMRRC·Switch Machine and Signal PCB/SMRRC_SwitchAndSignal.kicad_pcb

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

About the SMRRC SwitchAndSignal PCB

SMRRC SwitchAndSignal is an open source PIC PCB design by DavidMFlynn, published on GitHub under the MIT license. It is a 2-layer board measuring 98 × 68 mm, with 66 components from 25 distinct parts.

Its main chip is the PIC16F15345-I/SO, from the PIC family. Other key parts include the L78L05_SOT89, L7806, THVD1500, SN74HC259DR and SSM6N7002CFU. By type, the board carries 21 resistors, 14 ICs, 11 capacitors, 10 connectors, 7 diodes and 2 switches.

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 SwitchAndSignal

L78L05_SOT89L7806PIC16F15345-I/SOTHVD1500SN74HC259DRSSM6N7002CFU

SMRRC SwitchAndSignal bill of materials (BOM)

66 components, 25 distinct parts.

QtyPartRefs
1
L78L05_SOT89
U1
1
L7806
U2
1
PIC16F15345-I/SO
U3
1
THVD1500
U4
2
SN74HC259DR
U5, U6
8
SSM6N7002CFU
U7, U8, U9, U10, U11, U12, U13, U14
1
Conn_01x05
J1
1
Conn_01x03
J2
1
Conn_01x03
J3
1
Conn_01x08_Socket
J4
1
Conn_01x06
J5
5
Conn_01x04
J6, J7, J8, J9, J10
1
J114AF
K1
2
SW_Push
SW1, SW2
4
SMA
D1, D2, D6, D7
3
LED_Filled
D3, D4, D5
1
10uf
C1
1
33uF
C2
6
0.1uf
C3, C5, C7, C8, C10, C11
2
.1uF
C4, C6
Show 5 more
QtyPartRefs
1
220uF
C9
3
1K0
R1, R3, R5
2
47K
R2, R4
1
220
R6
15
1K0
R7, R8, R9, R10, R11, R12, R13, R14 +7

SMRRC SwitchAndSignal 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 SwitchAndSignal: common questions

What microcontroller does the SMRRC SwitchAndSignal use?

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

How big is the SMRRC SwitchAndSignal PCB?

The SMRRC SwitchAndSignal measures 98 × 68 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SMRRC SwitchAndSignal?

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

Where can I download the SMRRC SwitchAndSignal 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 SwitchAndSignal 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 SwitchAndSignal 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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