Sensor board
About the Sensor board
Sensor board is an open source PCB design by festlv, published on GitHub. It is a 2-layer board measuring 59.7 × 73.7 mm, with 23 components from 21 distinct parts.
By type, the board carries 7 resistors, 6 connectors, 6 diodes, 2 transistors, 1 fuse and 1 capacitor.
It belongs with the sensors designs in this gallery.
From the project
An automatic torch height controller
Homebrew plasma cutter torch height controller --------------------------------------------------
Schematics, layout and code for a simple yet intelligent replacement for THC301d torch height controller.
The main difference is that this one samples cutting voltage automatically after cut is started, and then tries to keep the plasma torch at the same height.
Beware- this has only been tested for a few hours as of now, but the results seem to be as good as with THC301d (but setpoint is determined automatically).
Sensor board bill of materials (BOM)
23 components, 21 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BC547 | TO92-CBE | Q1 |
| 1 | RELAY | FINDER_RELAY | Q2 |
| 1 | DB9 | DB9FC | J1 |
| 2 | CONN_2 | SCREW_TERM_2 | P1, P2 |
| 1 | TORCH_ON | SCREW_TERM_2 | P3 |
| 1 | ARC_OK | SCREW_TERM_2 | P4 |
| 1 | TEST_POINTS | TEST_POINT_2PADS | P5 |
| 1 | 200mA | ROUND_FUSE_HOLDER | F1 |
| 2 | LED | LED-3MM | D1, D6 |
| 1 | DIODE | D4 | D2 |
| 1 | BRIDGE | BRIDGE | D3 |
| 1 | 400V 1.5kW TVS | D6 | D4 |
| 1 | 5v1 ZENER | D6 | D5 |
| 1 | 10uF | C2V10 | C1 |
| 1 | 3K3 | R3-LARGE_PADS | R1 |
| 1 | 1K | R3-LARGE_PADS | R2 |
| 1 | 20K | R3-LARGE_PADS | R3 |
| 1 | 39K | R_5W_AXIAL | R8 |
| 1 | 1K | R_5W_AXIAL | R9 |
| 1 | 100R | R3-LARGE_PADS | R11 |
Show 1 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 3K | R3-LARGE_PADS | R12 |
Sensor board design files
The KiCad project lives in the festlv/thc repository on GitHub; these links point at the commit this page was built from.
- Layoutsensor_board.kicad_pcb
Sensor board: common questions
How big is the Sensor board?
The Sensor board measures 59.7 × 73.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Sensor board?
23 components, from 21 distinct parts. The full bill of materials is listed on this page.
Where can I download the Sensor board design files?
From the festlv/thc repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Sensor board design in my own project?
The repository has no license, so all rights stay with festlv. Use it as a reference, and ask the author before reusing the design.
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