
LEC
MSTRocketDesignTeam/Liquid-Engine-Controller
Evolution of the RDT's Custom Liquid Engine Control Unit!

Evolution of the RDT's Custom Liquid Engine Control Unit!
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.
*This repo is intended for educational purposes only*
A student researched and designed (SRAD) engine controller for the liquid bipropellant rocket.
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.
placeholder
placeholder
This repo contains three main sections, hardware, firmware, and software.
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.
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.
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.).
| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 10K | Resistor_SMD:R_0603_1608Metric | R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17 |
| 12 | 100n | Capacitor_SMD:C_0603_1608Metric | C1, C3, C5, C6, C11, C17, C21, C22, C23, C24, C25, C26 |
| 3 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C9, C10, C20 |
| 3 | 10n | Capacitor_SMD:C_0603_1608Metric | C14, C15, C16 |
| 3 | 1u | Capacitor_SMD:C_0805_2012Metric | C2, C8, C19 |
| 3 | 2.2u | Capacitor_SMD:C_1206_3216Metric | C4, C7, C13 |
| 3 | MAX31855KASA | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2, U3, U8 |
| 3 | TPS70933DBVR | TPS70933DBVR:DBV5_TEX | U5, U6, U7 |
| 1 | 0.2 | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 10u | Capacitor_SMD:C_1210_3225Metric | C18 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C12 |
| 1 | Conn_01x10_Pin | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical | J1 |
| 1 | Conn_01x20_Pin | Connector_PinHeader_2.54mm:PinHeader_1x20_P2.54mm_Vertical | J3 |
| 1 | LOGO | RDT_Logo:RDT_Logo | G*** |
| 1 | MCP3564RT-E/ST | MCP3564:TSSOP20_ST_MCH | U1 |
The 53 most common of 56 parts.
It measures 38 × 58.5 mm and has 4 copper layers, 1.6 mm thick.
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.
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.
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).

MSTRocketDesignTeam/Liquid-Engine-Controller
Evolution of the RDT's Custom Liquid Engine Control Unit!

MSTRocketDesignTeam/Liquid-Engine-Controller
Evolution of the RDT's Custom Liquid Engine Control Unit!

MSTRocketDesignTeam/Liquid-Engine-Controller
Evolution of the RDT's Custom Liquid Engine Control Unit!

MSTRocketDesignTeam/Liquid-Engine-Controller
Evolution of the RDT's Custom Liquid Engine Control Unit!

MSTRocketDesignTeam/Liquid-Engine-Controller
Evolution of the RDT's Custom Liquid Engine Control Unit!

MSTRocketDesignTeam/Liquid-Engine-Controller
Evolution of the RDT's Custom Liquid Engine Control Unit!

mattwach/battery_drainer
Hardware to safely discharge LIPO batteries to storage levels

Rogger/schneggi-sensor
A low-power ZigBee sensor integrated with HomeAssistant for monitoring temperature, humidity, and CO2.

Tinkerforge/evse-bricklet
This Bricklet together with the ESP32 Brick the RS485 Bricklet and the NFC Bricklet form the hardware used in the WARP Charger

iamdarshg/drone-arm
Reworked cheaper, maybe faster but less redundant drone controller.

peteEH/remote-temp-msp430-rs422
Remote Temperature Sensor Node - TMP10 - RS-422 or RS-485 based - MSP430G2553

Wild-Spy/OSTBoardHardware
Hardware design for the Open Source Timer board.

chirauki/open-rally-remote
Open-source Bluetooth handlebar remote for motorcycle navigation and roadbooks. Compact, rugged, and designed for anyone to build.

dan-stefanov/locatof-hw
Open-source localization project based on UWB Time-of-Flight ranging