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diff --git a/keyboards/handwired/z150/readme.md b/keyboards/handwired/z150/readme.md new file mode 100644 index 0000000000..a1f0bef8f7 --- /dev/null +++ b/keyboards/handwired/z150/readme.md @@ -0,0 +1,62 @@ +# QMK-based firmware for Zenith Z-150 keyboard + + + +Zenith Z-150 keyboard conversion project: direct connection of Black Pill to the matrix. + +* Keyboard Maintainer: [DmNosachev](https://github.com/DmNosachev) +* Hardware Supported: [Zenith Z-150 keyboard, 100-1860 version with white logo](https://deskthority.net/wiki/Zenith_Z-150), Black Pill STM32F103C8T6 MCU board. Alternatevely you can use any MCU which is supported by QMK and has 22 or more IO pins: Arduino Micro, Teensy 2.0, Teensy 2.0++, Blue Pill, etc. + +Earlier 100-1886 version with black logo has different PCB. + +Make example for this keyboard (after setting up your build environment): + + make handwired/z150:default + +See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs). + +# Modding + +## Matrix + +Z-150 has 11x8 matrix. It's ghost-free thanks to the diodes. + +Columns are located under NEC D8049HC MCU IC: + + +Rows are connected to unmarked 24-pin MUX IC: + + +## LEDs + +LEDs (from left to right): NumLock, CapsLock, ScrollLock: + + +Their anodes are connected to VCC through 220Ω resistors. + + +You can keep the original resistors, but with Black Pill or any other 3.3V controller the LEDs may seem a little dim. Try 150Ω or close value if you want to fix that. + + +## Black Pill +Suggested mount position for the Black Pill (view from the bottom side of the PCB): + +``` + R0 R1 R2 R3 R4 R6 R9 LC LN LS +,--------------------------------------------------------------------, +|B12 B13 B14 B15 A8 A9 A10 A11 A12 A15 B3 B4 B5 B6 B7 3V3 GND |---, +| |USB| +|B11 B10 B1 B0 A7 A6 A5 A4 A3 A2 A1 A0 RST C13 B9 B8 GND |---' +'--------------------------------------------------------------------' + C0 C1 C2 C3 C4 C5 C6 C7 R5 R8 R7 RA +``` + + +1. Desolder all ICs, crystal oscillator, capacitors and resistors except R0–R2 (they connect LEDs to VCC). +1. Solder 12-pin header to the Black Pill (pins B11–A0 on the left side). +2. Solder two 3-pin headers for boot jumpers. +3. Solder 4-pin SWD header. +4. Burn [STM32duino bootloader](https://github.com/rogerclarkmelbourne/STM32duino-bootloader/blob/master/bootloader_only_binaries/generic_boot20_pb12.bin) to Black Pill. +5. Compile and flash the firmware: `make handwired/z150:default:flash` +5. Align Black Pill pins B11–A4 with columns 0–7 and solder them. +6. Connect rows, LEDs, ground and VCC traces to the corresponding pins of the BlackPill using additional wires. |