Open‑Source Hardware Files for H4M Pro (#3298)

* Add H4M Pro PCB R1

* Add H4M Pro Gerber Files

* Add H4M Pro Schematic Files

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

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Co-authored-by: gullradriel <3157857+gullradriel@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: 3 people

hardware/portapack_h4m Pro/h4 Pro-Schematic/Audio_Schematic.pdf

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+The schematic files of H4M Pro are the same as H4M. The only difference is the use of an 18650 battery holder. If you have any questions about them, please feel free to contact me. Our email address is support@opensourcesdrlab.com

hardware/portapack_h4m Pro/h4 Pro-Schematic/CPLD_Schematic.pdf

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+M48
+METRIC,LZ,000.000
+;FILE_FORMAT=3:3
+;TYPE=NON_PLATED
+;Layer: NPTH_Through
+;EasyEDA v6.5.46, 2026-07-24 11:31:18
+;10
+;Gerber Generator version 0.2
+;Holesize 1 = 2.400 mm
+T01C2.400
+%
+G05
+G90
+T01
+X-077153Y008000
+M30