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Adding mention of other models (e.g. Kraze HD Mega 20K/RAZ DC25000) #5
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The stock theme has been converted to PNG and an example theme layout was created in issue 3. Notably, the Kraze HD Mega SPI Flash contains two "BOOST Mode" graphics, of which only one is used. |
Many more samples of the HD Mega have been acquired. The difference between the two Boost mode graphics can be correlated by what appears to be a hidden version screen (see issue 3). The first Boost mode graphic has a flame pattern that resembles tigers' faces, with the second being a more plain flame graphic. If you hold the side button for over 10 seconds, a version screen will appear, with a string like "GV2024 0318V1", or "GV2024 0408V2". The V1 and V2 determine which graphic is used, with the V1 being the "tiger flames" and V2 being the plain flames. |
On the "MTRX MX 25000" vapes with both a full color 14 pin screen and a separate segmented display pcb for battery and juice percentages, I can confirm that the puff count or juice meter is stored in sram. On my "candied grape" unit, disconnecting the battery for a few seconds made it jump from thirty something back to 100%. |
The structure of the repository and its corresponding documentation will need some restructuring to accommodate Raz/Kraze vapes of different models.
I've recently acquired some Kraze HD Mega 20K (aka RAZ DC25000) vapes with a much larger 160x128 LCD (sometimes incorrectly referred to as OLED) and a pushbutton. It uses the same Nations Tech microcontroller but with a 4 MiB SPI NOR Flash chip. The LCD type could not yet be determined and I have not been able to find 128x160 SPI LCD models that use a 10-pin mezzanine connector. I'm going to hazard a guess that it uses the same ST7735 or compatible controller, to reduce firmware development efforts.
Preliminary work on dumping the MCU firmware (the same SWD cable trick still works), and creating the SPI Flash split map has already been completed; attempts to re-theme the vape have not yet commenced as of today (July 29th, 2024).
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