HardLabs

Thermocouple board

waterloo-rocketry·daq·design/thermocouple_board/thermocouple_board.kicad_pcb

Thermocouple board layout, top view — open source PIC board by waterloo-rocketry

About the Thermocouple board

Thermocouple board is an open source PIC PCB design by waterloo-rocketry, published on GitHub. It is a 2-layer board measuring 73.9 × 56.6 mm, with 59 components from 25 distinct parts.

Its main chip is the PIC18LF26K83, from the PIC family. Other key parts include the MCP2562, AP2120N-3.3TRG1 and MAX31855KASA. By type, the board carries 14 capacitors, 13 resistors, 8 inductors, 7 ICs, 7 connectors and 6 diodes.

It belongs with the sensors designs in this gallery.

From the project

Data Acquisition schematics, boards, datasheets, docs, and software

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

Main components on the Thermocouple board

PIC18LF26K83MCP2562AP2120N-3.3TRG1MAX31855KASA

Thermocouple board bill of materials (BOM)

59 components, 25 distinct parts.

QtyPartRefs
1
PIC18LF26K83
U1
1
MCP2562
U2
1
AP2120N-3.3TRG1
U3
4
MAX31855KASA
U4, U5, U6, U7
1
12 MHz
Y1
1
Prog Conn
J1
1
CAN Conn
J2
1
CAN Ext Conn
J3
4
Thermocouple conn
J4, J5, J6, J7
2
TestPoint
+3.3V, +5V
1
Jumper
JP1
1
1.5KExxA
D1
2
GREEN
D2, D6
1
YELLOW
D3
1
ORANGE
D4
1
RED
D5
8
1K @ 100 MHz
L1, L2, L3, L4, L5, L6, L7, L8
2
27pF
C1, C2
1
10uF
C3
9
0.1uF
C4, C7, C8, C9, C10, C11, C12, C13 +1
Show 5 more
QtyPartRefs
1
4.7uF
C5
1
22uF
C6
7
10k
R1, R2, R3, R10, R11, R12, R13
1
220R
R4
5
120R
R5, R6, R7, R8, R9

Thermocouple board design files

The KiCad project lives in the waterloo-rocketry/daq repository on GitHub; these links point at the commit this page was built from.

Thermocouple board: common questions

What microcontroller does the Thermocouple board use?

The Thermocouple board is built around the PIC18LF26K83, from the PIC family.

How big is the Thermocouple board?

The Thermocouple board measures 73.9 × 56.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Thermocouple board?

59 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the Thermocouple board design files?

From the waterloo-rocketry/daq repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Thermocouple board design in my own project?

The repository has no license, so all rights stay with waterloo-rocketry. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Thermocouple board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug PIC firmware against it before you order a PCB.

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