2 layers123.8 × 99.7 mm
2 layers
Sensor board
festlv/thc7An automatic torch height controller
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 16
- Pads
- 61
- Tracks, vias
- 96, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 2 Mar 2014
- Updated
- 2 Mar 2014
Overview
Sensor board is an open-source printed circuit board by festlv, from the festlv/thc repository on GitHub. It is a 2-layer board with 23 parts on 16 nets, routed with 96 tracks and 0 vias.
It is built around the BC547. Its parts include 7 resistors, 6 diodes, 6 connectors, 2 transistors and 1 capacitor. It belongs with the sensors and measurement boards of this library.
Main components
1README
README.mdHomebrew 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).
License: GNU General Public License (GPL) version 3.
Author: Reinis Veips, http://wot.lv/
Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | CONN_2 | SCREW_TERM_2 | P1, P2 |
| 2 | LED | LED-3MM | D1, D6 |
| 1 | 100R | R3-LARGE_PADS | R11 |
| 1 | 10uF | C2V10 | C1 |
| 1 | 1K | R_5W_AXIAL | R9 |
| 1 | 1K | R3-LARGE_PADS | R2 |
| 1 | 200mA | ROUND_FUSE_HOLDER | F1 |
| 1 | 20K | R3-LARGE_PADS | R3 |
| 1 | 39K | R_5W_AXIAL | R8 |
| 1 | 3K | R3-LARGE_PADS | R12 |
| 1 | 3K3 | R3-LARGE_PADS | R1 |
| 1 | 400V 1.5kW TVS | D6 | D4 |
| 1 | 5v1 ZENER | D6 | D5 |
| 1 | ARC_OK | SCREW_TERM_2 | P4 |
| 1 | BC547 | TO92-CBE | Q1 |
| 1 | BRIDGE | BRIDGE | D3 |
| 1 | DB9 | DB9FC | J1 |
| 1 | DIODE | D4 | D2 |
| 1 | RELAY | FINDER_RELAY | Q2 |
| 1 | TEST_POINTS | TEST_POINT_2PADS | P5 |
| 1 | TORCH_ON | SCREW_TERM_2 | P3 |
Questions
What parts does the Sensor board use?
23 parts, built around the BC547. 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 Sensor board KiCad files?
From the festlv/thc repository on GitHub, at the commit this page was made from: the board is sensor_board.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sensor board design in my own project?
Its repository states no licence, so its author keeps all rights: ask festlv before reusing the design.
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