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4 layers38 × 58.5 mmDAQ module, the printed circuit board in 3D

Evolution of the RDT's Custom Liquid Engine Control Unit!

Size
38 × 58.5 mm
Copper layers
4
Thickness
1.6 mm
Parts
56
Nets
49
Pads
178
Tracks, vias
306, 59
Pours
1
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
8 Sep 2024
Updated
27 Oct 2026

Overview

DAQ module is an open-source printed circuit board by MSTRocketDesignTeam, from the MSTRocketDesignTeam/Liquid-Engine-Controller repository on GitHub, published under the AGPL-3.0 licence. It is a 4-layer board of 38 × 58.5 mm with 56 parts on 49 nets, routed with 306 tracks and 59 vias.

It is built around the MAX31855KASA+T and TPS70933DBVR-MS. Its parts include 26 capacitors, 17 resistors, 7 ICs and 2 connectors.

Main components

2

README

README.md

Missouri S&T Rocket Design Team

*This repo is intended for educational purposes only*

SRAD Engine Controller

A student researched and designed (SRAD) engine controller for the liquid bipropellant rocket.

About

This project is the first iteration of the flight controller for the Rocket Design Team's (RDT) liquid bipropellant rocket. It aims to provide basic engine control functionality, such as opening and closing of the servo ball valves (SBV), as well as to set the hardware baseline for more advanced control functionality like throttling algorithms for flight efficiency. Additionally, the Liquid Engine Controller (LEC) aims to serve as the data acquisition computer for the propulsion system, in order to analyze the performance of the propulsion system.

Documentation

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Development

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File Structure

This repo contains three main sections, hardware, firmware, and software.

Hardware:

The hardware directory will contain all of the files related to the design and assembly of the PCBs. This includes KiCad projects as well as BOMs.

Firmware:

The firmware directory will contain all of the code (C++) necessary to operate the above hardware. Once the boards have been designed and assembled this is where significant effort will be made.

Software:

The software directory will contain the code (Python) for the LEC's computer interface. This program will be responsible for configuring the LEC prior to launch as well as for displaying live propulsion system state data from the launch pad.

Future developments may allow for preflight simulations (FEA / CFD of engine, estimated throttling curve, etc.).

Parts

56
QtyValueFootprintReferences
1610KResistor_SMD:R_0603_1608MetricR2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17
12100nCapacitor_SMD:C_0603_1608MetricC1, C3, C5, C6, C11, C17, C21, C22, C23, C24, C25, C26
30.1uCapacitor_SMD:C_0603_1608MetricC9, C10, C20
310nCapacitor_SMD:C_0603_1608MetricC14, C15, C16
31uCapacitor_SMD:C_0805_2012MetricC2, C8, C19
32.2uCapacitor_SMD:C_1206_3216MetricC4, C7, C13
3MAX31855KASAPackage_SO:SOIC-8_3.9x4.9mm_P1.27mmU2, U3, U8
3TPS70933DBVRTPS70933DBVR:DBV5_TEXU5, U6, U7
10.2Resistor_SMD:R_0603_1608MetricR1
110uCapacitor_SMD:C_1210_3225MetricC18
110uCapacitor_SMD:C_0805_2012MetricC12
1Conn_01x10_PinConnector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_VerticalJ1
1Conn_01x20_PinConnector_PinHeader_2.54mm:PinHeader_1x20_P2.54mm_VerticalJ3
1LOGORDT_Logo:RDT_LogoG***
1MCP3564RT-E/STMCP3564:TSSOP20_ST_MCHU1

The 53 most common of 56 parts.

Questions

How big is the DAQ module PCB?

It measures 38 × 58.5 mm and has 4 copper layers, 1.6 mm thick.

What parts does the DAQ module use?

56 parts, built around the MAX31855KASA+T and TPS70933DBVR-MS. 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 DAQ module KiCad files?

From the MSTRocketDesignTeam/Liquid-Engine-Controller repository on GitHub, at the commit this page was made from: the board is _archive/hardware-leviathan/DAQ_Module_CDR_Crunch/DAQ_module.kicad_pcb and its schematic _archive/hardware-leviathan/DAQ_HAT/DAQ_HAT.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the DAQ module design in my own project?

Its repository publishes it under the AGPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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