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4 layers101.6 × 76.2 mmMTB V2, the printed circuit board in 3D

Files for E80

Size
101.6 × 76.2 mm
Copper layers
4
Thickness
1.6 mm
Parts
128
Nets
140
Pads
666
Tracks, vias
1,717, 226
Pours
5
Routed
Yes
KiCad
KiCad 5 (file 20171130)
Created
26 Apr 2022
Updated
5 Jan 2026

Overview

MTB V2 is an open-source printed circuit board by HMC-E80, from the HMC-E80/E80 repository on GitHub. It is a 4-layer board of 101.6 × 76.2 mm with 128 parts on 140 nets, routed with 1,717 tracks and 226 vias.

It is built around the CD74HC4050M, MC33HB2002ES and MCP6004-E/P, with the L7805, LD1086DT and LM3880-1AC among its other parts. Its parts include 38 capacitors, 29 resistors, 11 ICs, 10 diodes and 6 fuses. It belongs with the NXP (LPC, Kinetis, i.MX RT) boards of this library.

Main components

8

README

README.md

E80

This repository includes Arduino sketches (.ino) for the Teensy on the E80 motherboard. The files for each lab are included in a separate folder. The .ino files in each lab folder share the same name as the folder (e.g., E80_Lab_01.ino is in a folder named E80_Lab_01.ino). This is a requirement for the Arduino IDE.

This respository also includes a folder of all the libraries you need for the various hardware peripherals on your motherboard (e.g., the GPS, and intertial measurement unit (IMU)).

The MATLAB folder contains the various MATLAB .m files which are used throughout the labs.

How to Use this Repository

Git Setup

You will need to configure Git on your machine. Git is a distributed version control system. This means you can download a local clone of a collection of source code files and easily track the changes that you make to your code. While we won't be using all the features of git in E80, we will introduce you to the main features that will enable you to interact with the code base for your robot.

First, you need to install Git on your computer. We recommend that for this class you use Git Desktop which provides a convenient GUI interface for interacting with the code.

  1. Download and install the latest version of Git Desktop here.
  2. Navigate to the E80 GitHub repository and click Code > Open with GitHub Desktop. You will get a prompt to clone/download the repo, and GitHub Desktop will ask you where to save the files. Choose a location on your hard drive where you want to save the files (i.e., NOT in a folder that is synchronized in the cloud like a Google Drive File Stream folder). You should choose a location on your hard drive to minimize the chances of having any data corrupted.
    • NOTE: If for some reason clicking Open with GitHub Desktop is not working properly, simply copy the URL for the repository (e.g., https://github.com/HMC-E80/E80) and then manually clone the repository in GitHub Desktop using File > Clone Repository. Enter the copied URL into the "Respository URL" field.

Arduino IDE Setup

Follow the instructions below to download and use this code within the Arduino IDE.

  1. If you have not yet installed the Arduino IDE, install it from here. The version as of this writing is 2.0.3 but higher version numbers should also work fine.
  2. Follow the instructions here to configure support for the Teensy board within the Arduino IDE.
  3. After downloading the code, open the Arduino IDE and go to Arduino IDE > Settings if you are using a MAC and file > preferences if you are using Windows. Change the Sketchbook location to point to the folder you downloaded from GitHub.

  1. Now you if you click on the Sketchbook icon in the toolbar on the left side of the Arduino IDE you should see all the code for your E80 motherboard listed and available. Open up the E80_Lab_01.ino sketch and Verify it to check that it compiles and all the libraries are properly downloaded.

Congratulations, you are now set up and have the default E80 source code downloaded! If you have any issues with these instructions, please reach out to one of the instructors.

Parts

128
QtyValueFootprintReferences
150.1uFMTB_V2_Footprints:0603C18, C19, C20, C21, C22, C23, C24, C25, C26, C27, C28, C29, C30, C31, C32
150.1uFMTB_V2_Footprints:0805C2, C6, C7, C8, C10, C11, C13, C15, C17, C33, C34, C35, C36, C37, C38
1210kMTB_V2_Footprints:0805R2, R12, R14, R16, R19, R20, R21, R23, R24, R25, R28, R29
9LEDMTB_V2_Footprints:0805_DiodeD1, D2, D3, D4, D5, D6, D7, D8, D9
8470MTB_V2_Footprints:0805R4, R5, R6, R10, R11, R13, R15, R17
8TEST_POINTMTB_V2_Footprints:Test_PointTP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8
5JumperMTB_V2_Footprints:JumperJP1, JP2, JP3, JP4, JP5
4100uFMTB_V2_Footprints:CP_Elec_6.3x7.7C9, C12, C14, C16
4MOUNTING_HOLEMTB_V2_Footprints:Mounting_HoleH1, H2, H3, H4
30.5AMTB_V2_Footprints:1206F1, F2, F3
31.5AMTB_V2_Footprints:1812F4, F5, F6
310uFMTB_V2_Footprints:0805C3, C4, C5
3200MTB_V2_Footprints:0805R22, R26, R27
3MC33HB2002ESMTB_V2_Footprints:QFN-28_EP_6x6_Pitch0.65mmU5, U7, U8
3PTS815MTB_V2_Footprints:PTS815_SJK_250_SMTR_LFSB2, B3, B4
3R_Array_8MTB_V2_Footprints:SOIC-16W_5.3x10.2mm_Pitch1.27mmRN1, RN2, RN3
10.01MTB_V2_Footprints:0612R1
10.33uFMTB_V2_Footprints:0805C1
11.2kMTB_V2_Footprints:0805R7
124kMTB_V2_Footprints:0805R9
130kMTB_V2_Footprints:0805R8
1330kMTB_V2_Footprints:0805R3
168MTB_V2_Footprints:0805R18
1BatteryMTB_V2_Footprints:Battery_ConnectorBT1
1ButtonMTB_V2_Footprints:Push_ButtonB1
1CD74HC4050MTB_V2_Footprints:DIP-16_W7.62mm_SocketU4
1D_SchottkyMTB_V2_Footprints:D_PowerDI-123D10
1GPSMTB_V2_Footprints:GPSGPS1
1L7805MTB_V2_Footprints:TO-252-3_TabPin2U2
1LD1086MTB_V2_Footprints:TO-252-3_TabPin2U3
1LM3880MTB_V2_Footprints:SOT-23-6U11
1MCP6004MTB_V2_Footprints:SOIC-14_3.9x8.7mm_Pitch1.27mmU9
1MCP6541MTB_V2_Footprints:SC70U10
1MCP6V31MTB_V2_Footprints:SOT-23-5U1
1Motor AMTB_V2_Footprints:1x2_Screw_TerminalJ2
1Motor BMTB_V2_Footprints:1x2_Screw_TerminalJ3
1Motor CMTB_V2_Footprints:1x2_Screw_TerminalJ4
1PTB_CONNMTB_V2_Footprints:PTB_CONNJ1
1SON_03AGRTR_STMMTB_V2_Footprints:LSM303AGRTRU6
1Scew_Terminal_1x2MTB_V2_Footprints:1x2_Screw_TerminalJ5
1Switch_SPDTMTB_V2_Footprints:Battery_SwitchS1
1Teensy3.2MTB_V2_Footprints:TeensyTSY1
1micro_SDMTB_V2_Footprints:microSDSD1

Questions

How big is the MTB V2 PCB?

It measures 101.6 × 76.2 mm and has 4 copper layers, 1.6 mm thick.

What parts does the MTB V2 use?

128 parts, built around the CD74HC4050M, MC33HB2002ES, MCP6004-E/P and L7805. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the MTB V2 KiCad files?

From the HMC-E80/E80 repository on GitHub, at the commit this page was made from: the board is design_files/motherboard/MTB_V3.0.2021/MTB_V2.kicad_pcb and its schematic design_files/adapter_board/tnsy4.0to3.2pinout_adapter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the MTB V2 design in my own project?

Its repository states no licence, so its author keeps all rights: ask HMC-E80 before reusing the design.

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