4 layers152.9 × 77.2 mm
LEC
MSTRocketDesignTeam/Liquid-Engine-Controller
Evolution of the RDT's Custom Liquid Engine Control Unit!
71 parts2AGPL-3.0
2 layers30.7 × 41.1 mm
Evolution of the RDT's Custom Liquid Engine Control Unit!
- Size
- 30.7 × 41.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 30
- Nets
- 46
- Pads
- 129
- Tracks, vias
- 232, 30
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Sep 2024
- Updated
- 27 Oct 2026
Overview
ADCHat 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 2-layer board of 30.7 × 41.1 mm with 30 parts on 46 nets, routed with 232 tracks and 30 vias.
It is built around the MAX31855KASA+T and ECS-100-S-20A-TR. Its parts include 9 capacitors, 4 resistors, 2 diodes, 2 connectors and 1 crystal.
Main components
2
MAX31855KASA+T
SO-8-40℃~+125℃ 14 1500uA 3V~3.6V Built-in temperature sensor SPI Thermocouple-to-Digital Converter SO-8 ADCs/DACs - Special Purpose ROHSMaxim Integrated (Analog Devices)ADCs/DACs - Special Purpose
ECS-100-S-20A-TR
SMD7050-2P-10℃~+70℃ 10MHz 60Ω ±30ppm ±50ppm SMD7050-2P Crystals ROHSECSCrystals
README
README.md
*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
30| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10uF | Capacitor_SMD:C_0805_2012Metric | C4, C5, C8, C9 |
| 3 | 100nF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3 |
| 3 | MAX31855KASA | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | TC1, TC2, TC3 |
| 2 | 100nF | Capacitor_SMD:C_0805_2012Metric | C6, C7 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | Conn_01x15 | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J1, J2 |
| 2 | LED | LED_SMD:LED_0603_1608Metric | D1, D2 |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | 160Ω | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 510Ω | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 5V bypass | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | BP1 |
| 1 | ADS1256IDBR | ADS1256IDBR:SOP65P780X200-28N | ADC1 |
| 1 | ECS-100-S-20A-TR | ECS-100-S-20A-TR:XTAL_ECS-100-S-20A-TR | Y1 |
| 1 | LV LDO bypass | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | BP2 |
| 1 | MCP1792T-3302H/DB | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | V1 |
| 1 | MCP1792T-5002H/DB | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | V2 |
| 1 | NetTie_2 | NetTie:NetTie-2_SMD_Pad0.5mm | NT1 |
The 29 most common of 30 parts.
Questions
How big is the ADCHat PCB?
It measures 30.7 × 41.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the ADCHat use?
30 parts, built around the MAX31855KASA+T and ECS-100-S-20A-TR. 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 ADCHat KiCad files?
From the MSTRocketDesignTeam/Liquid-Engine-Controller repository on GitHub, at the commit this page was made from: the board is hardware/ADC Hat/ADCHat.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 ADCHat 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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