IOExpander-Mega-Schild
About the IOExpander-Mega-Schild PCB
IOExpander-Mega-Schild is an open source AVR/Arduino PCB design by martinfantini, published on GitHub. It is a 2-layer board measuring 114.3 × 96.5 mm, with 14 components from 8 distinct parts.
Its main chip is the Arduino_Mega2560_Shield, from the AVR/Arduino family. Other key parts include the LD1086V-DG. By type, the board carries 5 connectors and 1 IC.
From the project
This repo contains all the information regarding to the model trains project
This repository contains all the necesarry information for generate an expander of the possible input/output of the central.
For this case, I use also the EX-IOExpander
For my case, I yunse Arduino Mega shild to generate the expander. To have more clean, the expande, I generate a circuit borad to solder all the input cables.
Main components on the IOExpander-Mega-Schild
IOExpander-Mega-Schild bill of materials (BOM)
14 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LD1086V-DG | TO-220-3_Vertical | U1 |
| 5 | Conn_01x08 | PinHeader_1x08_P2.54mm_Vertical | J1, J2, J3, J4, J5 |
| 1 | DCC | JST_NV_B02P-NV_1x02_P5.00mm_Vertical | CON_In1 |
| 2 | 10uF | CP_Radial_D8.0mm_P3.80mm | C_Ard_In1, C_Ard_Out1 |
| 1 | Arduino_Mega2560_Shield | Arduino_Mega2560_Shield | Central1 |
| 2 | Conn_01x16 | PinHeader_1x16_P2.54mm_Vertical | Con_Ard_2, Con_Ard_3 |
| 1 | 3K9 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R_Ard_1 |
| 1 | 560 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R_Ard_2 |
IOExpander-Mega-Schild design files
The KiCad project lives in the martinfantini/ModelTrains repository on GitHub; these links point at the commit this page was built from.
IOExpander-Mega-Schild: common questions
What microcontroller does the IOExpander-Mega-Schild use?
The IOExpander-Mega-Schild is built around the Arduino_Mega2560_Shield, from the AVR/Arduino family.
How big is the IOExpander-Mega-Schild PCB?
The IOExpander-Mega-Schild measures 114.3 × 96.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the IOExpander-Mega-Schild?
14 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the IOExpander-Mega-Schild design files?
From the martinfantini/ModelTrains repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the IOExpander-Mega-Schild design in my own project?
The repository has no license, so all rights stay with martinfantini. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the IOExpander-Mega-Schild without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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