diff options
| author | xengineering <me@xengineering.eu> | 2025-02-15 22:02:25 +0100 |
|---|---|---|
| committer | xengineering <me@xengineering.eu> | 2025-02-15 22:09:18 +0100 |
| commit | 60369177e1e9ad171d600d40e8438430e154e558 (patch) | |
| tree | 7aec79ce1ffaa36fe3391db1723204a0b39c049c /pcb/power.kicad_sch | |
| parent | b5a439b3268c055e0daddd86c34acf71dd62d9f0 (diff) | |
| download | iot-contact-60369177e1e9ad171d600d40e8438430e154e558.tar iot-contact-60369177e1e9ad171d600d40e8438430e154e558.tar.zst iot-contact-60369177e1e9ad171d600d40e8438430e154e558.zip | |
pcb: J3: Add non-PoE 5V power input header
Power over Ethernet (PoE) has the disadvantage that GND is significantly
below earth. This requires that GND of a PoE-powered device is never
attached to earthed devices.
In production use cases this is no problem. The earth lines are
isolated.
Nevertheless for debugging it is sometimes useful to connect measuring
equipment like logic analyzers and oscilloscopes to the board. This is
not possible with PoE. Thus an alternative earth-based 5V power input is
useful.
Diffstat (limited to 'pcb/power.kicad_sch')
| -rw-r--r-- | pcb/power.kicad_sch | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/pcb/power.kicad_sch b/pcb/power.kicad_sch index d4c47db..2fc67a5 100644 --- a/pcb/power.kicad_sch +++ b/pcb/power.kicad_sch @@ -5,4 +5,26 @@ (uuid "04efbab4-4b09-41dd-b889-e48452d150e7") (paper "A4") (lib_symbols) + (hierarchical_label "EXT_GND" + (shape input) + (at 50.8 116.84 180) + (effects + (font + (size 1.27 1.27) + ) + (justify right) + ) + (uuid "63f6c991-7d4d-49ef-849f-23837f200404") + ) + (hierarchical_label "EXT_5V" + (shape input) + (at 50.8 114.3 180) + (effects + (font + (size 1.27 1.27) + ) + (justify right) + ) + (uuid "f4c611bb-4ee4-414a-8506-b9578937609d") + ) ) |