4 layers74.9 × 45 mm
I2c pancake
waterloo-rocketry/daq
Data Acquisition schematics, boards, datasheets, docs, and software
61 parts5
2 layers73.9 × 56.6 mm
Thermocouple board
waterloo-rocketry/daq5Data Acquisition schematics, boards, datasheets, docs, and software
- Size
- 73.9 × 56.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 69
- Nets
- 52
- Pads
- 189
- Tracks, vias
- 485, 61
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 9 Dec 2017
- Updated
- 1 Aug 2025
Overview
Thermocouple board is an open-source printed circuit board by waterloo-rocketry, from the waterloo-rocketry/daq repository on GitHub. It is a 2-layer board of 73.9 × 56.6 mm with 69 parts on 52 nets, routed with 485 tracks and 61 vias.
It is built around the PIC18LF26K83-I/SS, MCP2562-H/P and MAX31855KASA+T, with the AP2120N-3.3TRG1 among its other parts. Its parts include 14 capacitors, 13 resistors, 8 inductors, 7 ICs and 7 connectors. It belongs with the PIC boards of this library.
Main components
4
PIC18LF26K83-I/SS
SSOP-28-208mil-40℃~+85℃ 1.8V~3.6V 12bit 1KB 25 4KB 5bit 64KB 64MHz 8 Bit Built-in FLASH PIC SSOP-28-208mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MCP2562-H/P
PDIP-8-40℃~+150℃ 4.5V~5.5V PDIP-8 CAN Transceivers ROHSMicrochip TechnologyCAN Transceivers
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
AP2120N-3.3TRG1
SOT-23-40℃~+85℃@(Tj) 1 150mA 200mV@(100mA) 25uA 3.3V 30uVrms 65dB@(1kHz) 6V Fixed Over Current Protection Positive SOT-23 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdWaterloo Rocketry Data Acquisition System
Work in progress repo for the next iteration of the WR DAQ. This revision focuses on modularity and extensibility, with the ability to easily add more sensors as required. Schematics of the last revision are in old/. The new system supports the following:
- Strain gauges
- 12V pressure transducers
- thermistors/RTDs based on need
- SD card logging using an Arduino
- Logging to an NI DAQ instrumentation module
The system is broken up into boards based on sensor type, with each board managing its own power requirements without the need for a central power board. Sensors can be added by populating more boards (and designing new ones to be added on if necessary). docs/ will be populated as the project progresses.
Parts
69| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C7, C8, C9, C10, C11, C12, C13, C14 |
| 8 | 1K @ 100 MHz | Fuse:Fuse_0805_2012Metric_Pad1.15x1.40mm_HandSolder | L1, L2, L3, L4, L5, L6, L7, L8 |
| 7 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R10, R11, R12, R13 |
| 7 | TestPoint | TestPoint:TestPoint_Keystone_5005-5009_Compact | +3.3V, +5V, GND, MISO, RX, SCLK, TX |
| 5 | 120R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6, R7, R8, R9 |
| 4 | MAX31855KASA | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4, U5, U6, U7 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 4 | Thermocouple conn | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J4, J5, J6, J7 |
| 2 | 27pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 2 | GREEN | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D2, D6 |
| 1 | 1.5KExxA | Diode_SMD:D_SOD-523 | D1 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | 12 MHz | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | 220R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | 22uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6 |
| 1 | 4.7uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5 |
| 1 | AP2120N-3.3TRG1 | Package_TO_SOT_SMD:SOT-23-3 | U3 |
| 1 | CAN Conn | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-4-5.08_1x04_P5.08mm_Horizontal | J2 |
| 1 | CAN Ext Conn | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-4-5.08_1x04_P5.08mm_Horizontal | J3 |
| 1 | Jumper | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | LOGO | logo:Logo_SilkScreen_10mm | G*** |
| 1 | MCP2562 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | ORANGE | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D4 |
| 1 | PIC18LF26K83 | Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm | U1 |
| 1 | Prog Conn | canhw:PinHeader_5x2.54_SMD_90deg_952-3198-1-ND | J1 |
| 1 | RED | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D5 |
| 1 | YELLOW | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D3 |
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Questions
How big is the Thermocouple board PCB?
It measures 73.9 × 56.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Thermocouple board use?
69 parts, built around the PIC18LF26K83-I/SS, MCP2562-H/P, MAX31855KASA+T and AP2120N-3.3TRG1. 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 Thermocouple board KiCad files?
From the waterloo-rocketry/daq repository on GitHub, at the commit this page was made from: the board is design/thermocouple_board/thermocouple_board.kicad_pcb and its schematic design/DAQ Patch Panel/DAQ_Patch_Panel.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Thermocouple board design in my own project?
Its repository states no licence, so its author keeps all rights: ask waterloo-rocketry before reusing the design.