Load cell
About the Load cell PCB
Load cell is an open source NXP PCB design by owhite, published on GitHub. It is a 2-layer board measuring 85.2 × 58.3 mm, with 26 components from 14 distinct parts.
Its main chip is the Teensy3.2, from the NXP family. By type, the board carries 12 resistors, 5 diodes, 1 IC, 1 transistor, 1 connector and 1 speaker.
From the project
files that sit in linuxcnc/config for the laser
Main components on the Load cell
Load cell bill of materials (BOM)
26 components, 14 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Teensy3.2 | Teensy32 | U1 |
| 1 | BUZ11 | TO-220-3_Vertical | Q1 |
| 1 | RJ45 | my_RJ45_Amphenol | J1 |
| 2 | Conn_01x05 | PinHeader_1x05_P2.54mm_Vertical | DETECTORS1, GECKO1 |
| 1 | CDS-13138-SMT-TR | CDS13138SMTTR | LS1 |
| 1 | SW_Push | SW_SPST_TL3342 | PB1 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | PWR1 |
| 1 | Conn_01x03 | PinHeader_1x03_P2.54mm_Vertical | SWITCH1 |
| 5 | LED | LED_0805_2012Metric | D1, D2, D3, D4, D5 |
| 7 | 4.7k | R_0805_2012Metric | R1, R2, R3, R6, R7, R9, R10 |
| 2 | 10k | R_0805_2012Metric | R4, R8 |
| 1 | 100 | R_0805_2012Metric | R5 |
| 1 | 50k | R_0805_2012Metric | R11 |
| 1 | 62k | R_0805_2012Metric | R12 |
Load cell design files
The KiCad project lives in the owhite/LASER_ENVIROMENT repository on GitHub; these links point at the commit this page was built from.
Load cell: common questions
What microcontroller does the Load cell use?
The Load cell is built around the Teensy3.2, from the NXP family.
How big is the Load cell PCB?
The Load cell measures 85.2 × 58.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Load cell?
26 components, from 14 distinct parts. The full bill of materials is listed on this page.
Where can I download the Load cell design files?
From the owhite/LASER_ENVIROMENT repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Load cell design in my own project?
The repository has no license, so all rights stay with owhite. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Load cell without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.
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