SMRRC USB
About the SMRRC USB PCB
SMRRC USB is an open source PCB design by DavidMFlynn, published on GitHub under the MIT license. It is a 2-layer board measuring 60 × 60 mm, with 15 components from 9 distinct parts.
Other key parts include the MCP2200T-I-SO. By type, the board carries 6 capacitors, 3 resistors, 2 connectors, 2 diodes, 1 IC and 1 crystal.
It belongs with the robotics & motion and usb & debug tools 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 USB
SMRRC USB bill of materials (BOM)
15 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP2200T-I-SO | SOIC-20W_7.5x12.8mm_P1.27mm | U1 |
| 1 | 12MHz | Crystal_HC49-4H_Vertical | Y1 |
| 1 | USB_B | USB_B_OST_USB-B1HSxx_Horizontal | J1 |
| 1 | Conn_02x06_Odd_Even | PinHeader_2x06_P2.54mm_Vertical | J2 |
| 2 | Green | LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1, D2 |
| 2 | 15pf | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 3 | 0.1uf | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4, C5 |
| 1 | 4.7uf | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6 |
| 3 | 4K7 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3 |
SMRRC USB design files
The KiCad project lives in the DavidMFlynn/SerialMRRC repository on GitHub; these links point at the commit this page was built from.
- LayoutUSB PCB/SMRRC_USB.kicad_pcb
- SchematicUSB PCB/SMRRC_USB.kicad_sch
SMRRC USB: common questions
How big is the SMRRC USB PCB?
The SMRRC USB measures 60 × 60 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the SMRRC USB?
15 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the SMRRC USB 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 USB design in my own project?
Yes, under the terms of its MIT license, which DavidMFlynn chose for the repository.
More boards in SerialMRRC
Input32DC
66 × 117 mm218 parts2LMIT1
Block Relay Daughter
157.5 × 99.1 mm92 parts2LMIT1
Output32DC
66 × 117 mm92 parts2LMIT1
PICSMRRC SwitchAndSignal
98 × 68 mm66 parts2LMIT1
PICSMRRC Switch
95.4 × 54.4 mm53 parts2LMIT1
Lights
55 × 60 mm35 parts2LMIT1
Seial Model Railroad Control
60 × 60 mm30 parts2LMIT1
PICSMRRC
60 × 60 mm28 parts2LMIT1
SMRRC PacketSerial
60 × 60 mm9 parts2LMIT1
Signal Head 3
36 × 40 mm4 parts2LMIT1
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