├── .gitattributes ├── .github └── workflows │ └── compile.yml ├── LICENSE ├── README.md ├── firmware ├── .gitignore ├── CMakeLists.txt ├── boards │ └── clockcore.json ├── platformio.ini ├── requirements.txt ├── sdkconfig.chronovfd └── src │ ├── CMakeLists.txt │ ├── ambientlight.c │ ├── ambientlight.h │ ├── animations.c │ ├── animations.h │ ├── ds1307.c │ ├── ds1307.h │ ├── i2cdev.c │ ├── i2cdev.h │ ├── main.c │ ├── realtimeclock.c │ ├── realtimeclock.h │ ├── segments.c │ ├── segments.h │ ├── vfddriver.c │ ├── vfddriver.h │ ├── wireless.c │ └── wireless.h ├── hardware ├── .gitignore ├── LICENSE ├── bom.ini ├── clockcore-cache.lib ├── clockcore.kicad_pcb ├── clockcore.pdf ├── clockcore.pro ├── clockcore.sch ├── clockcore_bom.csv ├── clockcore_ibom.html ├── errata │ └── rev1.0-photodiode │ │ ├── erratum-photodiode.md │ │ ├── fix01.jpg │ │ ├── fix02.jpg │ │ ├── fix03.jpg │ │ └── photodiode-schematic.png ├── extra_libraries │ ├── AHOI.kicad_mod │ ├── HV5812.dcm │ ├── HV5812.lib │ ├── IVL2-7_5.dcm │ ├── IVL2-7_5.kicad_mod │ ├── IVL2-7_5.lib │ ├── JTAG_2x05_P1.27mm_Vertical_SMD.kicad_mod │ ├── LM4871MX_NOPB.lib │ ├── Nuclear_Hazard.kicad_mod │ ├── PTS526SPG15SMTR2LFS.stp │ ├── QCPASS.kicad_mod │ ├── RF_Hazard.kicad_mod │ ├── SOIC127P599X175-8N.kicad_mod │ ├── SW_PTS526_SM08_SMTR2_LFS.kicad_mod │ ├── USB_C_Receptacle_HRO_TYPE-C-31-M-12.step │ ├── ahoi.dcm │ ├── ansemjo.dcm │ └── ansemjo.lib ├── fp-lib-table ├── images │ ├── clockcore_pcb.png │ ├── clockcore_render_back.png │ ├── clockcore_render_front.png │ ├── esp32-wroom-32-pinout-randomnerdtutorials.png │ ├── vfddriver_pcb.png │ ├── vfddriver_render_back.png │ └── vfddriver_render_front.png ├── sym-lib-table ├── universal_vfd_psu.kicad_pcb ├── universal_vfd_psu.pro ├── universal_vfd_psu.sch ├── vfddriver-cache.lib ├── vfddriver.kicad_pcb ├── vfddriver.pdf ├── vfddriver.pro ├── vfddriver.sch ├── vfddriver_bom.csv └── vfddriver_ibom.html ├── images ├── clockcore00.jpg ├── clockcore01.jpg ├── clockface.jpg ├── fullon.jpg ├── protoclock.jpg ├── vfddriver00.jpg ├── vfddriver01.jpg └── vfddriver02.jpg ├── protoclock ├── firmware │ ├── .gitignore │ ├── README.md │ ├── platformio.ini │ └── src │ │ ├── hvshift.cpp │ │ ├── hvshift.h │ │ ├── segments.cpp │ │ ├── segments.h │ │ └── vfd.ino └── scripts │ ├── i2c-clock.sh │ ├── i2c-text.sh │ └── update-ds3231-datetime.sh └── research ├── breadboard-experiments ├── .gitignore ├── README.txt ├── clock.py ├── helo.py ├── protoboard-sketch.jpg └── requirements.txt ├── filament_voltage.ods ├── hv_lm2733.ods ├── ivl2-7_5-datasheets ├── datasheet01.jpg ├── datasheet02.jpg ├── dimensions.jpg ├── pinout.jpg └── specs.jpg ├── notes.md └── universal-vfd-psu ├── bom.xlsx ├── eevblog_info_rolo.txt ├── pcb_layout.jpg ├── pcb_photo.jpg ├── photos ├── filament_freq_measurement.jpg ├── filament_pwm_driver.jpg ├── img_20180704_203541__01.jpg ├── img_20180704_203611__01.jpg ├── vfd_back.jpg ├── vfd_front.jpg ├── vfd_on_frame.jpg └── vfd_prototype.jpg ├── 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