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# Gray Studio HB85
![Gray Studio HB85 ](https://i.imgur.com/Sk3cupR.jpg )
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A Sony HitBit MSX Computer inspired Keyboard.
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Keyboard Maintainer: [Felipe Coury ](https://github.com/fcoury )
Hardware Supported: Gray Studio HB85
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Hardware Availability: [Group buy ](https://en.zfrontier.com/products/gray-hb85 ) finished
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Make example for this keyboard (after setting up your build environment):
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make gray_studio/hb85:default
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Flashing
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ps2avr(GB) boards use an atmega32a microcontroller and a different bootloader. It is not flashable using the regular QMK methods.
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**Reset Key:** Hold down the key located at `K00` , commonly programmed as F3 while plugging in the keyboard.
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Windows:
1. Download [HIDBootFlash ](http://vusb.wikidot.com/project:hidbootflash ).
2. Place your keyboard into reset.
3. Press the `Find Device` button and ensure that your keyboard is found.
4. Press the `Open .hex File` button and locate the `.hex` file you created.
5. Press the `Flash Device` button and wait for the process to complete.
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macOS:
1. Install homebrew by typing the following:
```
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
```
2. Install `crosspack-avr` .
```
brew cask install crosspack-avr
```
3. Install the following packages:
```
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brew install python3
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pip3 install pyusb
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brew install --HEAD https://raw.githubusercontent.com/robertgzr/homebrew-tap/master/bootloadhid.rb
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4. Place your keyboard into reset.
5. Flash the board by typing `bootloadHID -r` followed by the path to your `.hex` file.
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**Please Note:** You will need to use the `EEP_RST` keycode first, followed by unplugging/replugging the board to get RGB underglow effects to work.
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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 ).