Computer macro pads/stream decks/auxiliary keyboards normally control computer input functions with the press of a key, making your life easier. The JC Pro Macro takes things one step further and breaks out several GPIO pins from an Arduino Pro Micro board, allowing for control of things in "real life."In this project I hook up a small speaker for tone output, along with a small solenoid to drum out a beat. Solenoid actuation is assisted by an EZ Fan2 transistor board, which handles the higher current requirements of the device when compared to what the GPIO can supply. Proper ground and power breakout is handled by an I2C helper board fabricated by PCBWay, though I initially tried to make my own as shown in the video.Overall, I'm quite happy with how the project turned out, and it was a lot of fun to play. Code is available on GitHub, and the JC Pro Macro, I2C Helper and EZ Fan2 boards used are available on Tindie. If the macro pad looks interesting, but you need a few more keys, an enhanced "JC Pro Macro 2" will be funding soon on Kickstarter. You can check out a preview/sign up to be notified when it's live here!

ZX Spectrum KeyboardI made this keyboard for using with Superfo Harlequin 128, ZX Nuvo 128, ZX Max 128. They are ZX Spectrum clone.It also can be used with original ZX Spectrum or other clone.

For more information:https://github.com/arananet/A600KB-PCBMembraneIf you like the project or want to support it, https://ko-fi.com/arananetFor A600 keyboard membrane PCB HeaderFor A600 keyboard membrane PCB (gerberssinlogo.zip)Keyboard pcb:Layers: 2Dimension: 318mm*141mmPCB Thickness: 0.6PCB Color: AnySurface Finish: ENIG-RoHSCopper Weight: 1Gold Fingers: NoMaterial Details: FR4-Standard Tg 130-140CCastellated Holes:noNoteThis is a work in progress, several testing has been made but it should work as is. I take no responsibiltiy for any damage to any equipment that results from the use of this board.USE AT YOUR OWN RISK!

For more information:https://github.com/arananet/A600KB-PCBMembraneIf you like the project or want to support it, https://ko-fi.com/arananetFor A600 kerboard membrane PCB HeaderFor A600 kerboard membrane PCB (tecladoa600dual_2020-09-26.zip)Keyboard pcb:Layers: 2Dimension: 318mm*141mmPCB Thickness: 0.6PCB Color: AnySurface Finish: ENIG-RoHSCopper Weight: 1Gold Fingers: NoMaterial Details: FR4-Standard Tg 130-140CCastellated Holes:noNoteThis is a work in progress, several testing has been made but it should work as is. I take no responsibiltiy for any damage to any equipment that results from the use of this board.USE AT YOUR OWN RISK!

For more information:https://github.com/arananet/A600KB-PCBMembraneIf you like the project or want to support it, https://ko-fi.com/arananetFor A600 keyboard membrane PCB (gerberssinlogo.zip)For A600 keyboard membrane PCB (tecladoa600dual_2020-09-26.zip)Header pcb:Dimension: 38mm*23mmPCB Thickness: 0.6-0.8 depending on pcb manufacturer, if you doubt about this, order the 0.6 and supplement with a piece of tape on the back.PCB Color: AnySurface Finish: ENIG-RoHSCopper Weight: 1Gold Fingers: NoMaterial Details: FR4-Standard Tg 130-140CCastellated Holes:noNoteThis is a work in progress, several testing has been made but it should work as is. I take no responsibiltiy for any damage to any equipment that results from the use of this board.USE AT YOUR OWN RISK!

Keyboad usb to MSX NMS 8250/55/80

This is an expensive and very niche way to get a board to add to your MiSTer stack that implementsthe following in the C64 core:IEC BUSC128 Keyboard ConnectorRead details about it in my blog

MSX Expert - Adaptador de teclado PS2 (Funcionando - Revisado)MSX Expert - Adaptador de teclado PS2Montado e testado em 15-abr-2021:Clicar em BOM (Bill of materials) nessa pagina para baixar o arquivo com o .HEX a ser gravado no PIC.Revisado da versao anterior:https://www.pcbway.com/project/shareproject/MSX_Expert___Adaptador_de_teclado_PS2__n_o_testado_em_18_mar_2021_.htmlCorrecoes:Os furos (3) para prender a parte externa no conector Minidin foram aumentados;O furo do pino 13 do conector do teclado estava um pouco distante, foi aproximado;O conector PS2 que estava invertido, foi corrigido, conforme pode ser visto nas fotos.Observacao: Nao esquecer de liga o pino do terra, que esta acima dos 13 furos do conector do teclado do Expert, soldei dentro do conector, mas pode ser conectado no gabinete do Expert.Projeto original:https://luca.msxall.com/teclado_ps2_msx/teclado_ps2.htmNessa pagina, tem as configuracoes necessarias para a gravacao do PIC, tem um item que precisa ser alterado antes de gravar (CKDIV8 ! on ! off !) desmarcar.Se atentar sobre a opcao de gravacao definitiva (em alguns gravadores tem essa opcao, nao achei no gravador que usei). Recomendado deixar desmarcado.Esquema (também está dentro do arquivo BOM):https://luca.msxall.com/teclado_ps2/avr/teclado_avr_Expert.BMPPinagem do ATMEGA:https://datasheet.octopart.com/ATMEGA48P-20PU-Microchip-datasheet-62319947.pdfApesar do layout da placa ter sido feito para os 13 pinos do teclado serem conectados direto na entrada do teclado do Expert (devido ao tamanho da placa que fica encostando da entrada da impressora), recomendado soldar um cabo ou soldar pinos e conectar um cabo de extensao da placa para a entrada do teclado (deixando o adaptador como externo e afastado do gabinete pelo cabo).Observacao: O cabo utilizado na versao das fotos foi comprado nesse link https://www.ebay.com/itm/323792614751 A ultimas quatro fotos sao do versao que montei. Colocar soquetes para os CI′s e' opcional, coloquei apenas no PIC para facilitar na hora de testar e caso precisasse regravar.Observacao: Nao esquecer de isolar a placa (colocar em uma caixa) para evitar curto, principalmente se for deixar em cima do gabinete do Expert.Teclados testados que funcionaram perfeitamente:Compaq branco (antigo, BRAZIL 166516-206)HP preto com prata (model no.: KB-0316, BRAZIL)FABOR mini branco (86-SCNB/03-X)ACER branco (model no.: 6514-M)DATEN branco (model.: KBS-720)LEADERSHIP preto (model.: 3836)Funcionou parcialmente:Logitech preto (Logitech Deluxe 250, falhou as teclas de funcao, setas, ESC e STOP (nao testei home, select, insert))

Minimal BOM list.Need wiring directly to keyboard`s 6570 chip.

IntroductionThe Kurzweil K1000 is a classic synthesizer series that was produced from 1988 to 1992. It was made in two formats/versions: keyboard and rack.Even today, there's a good number of musicians keeping it in the studio because of some incredibly good (even for today standards) multi-layered sounds the machine can produce.One of the recurring problems with these synthesizers (both in keyboard and rack form) is the display electro-luminescent backlight running out.In this Instructables I will show you how to replace the factory Kurzweil K1000/1200 series display with a modern LED backlight LCD display. This will keep your synth usable (and attractive).I will also share with you a PCB to speed up the replacement process.Let's go! :)Seiko M1632 Vs New HD44780 DisplayThe factory display Kurzweil installed both in K1000/1200 series sinthesizers was a Seiko M1632 display.This display is based on an Hitachi controller (ASIC): the HD44780. This is still used today on those displays commonly used for DIY project.The main differences between the Seiko EL backlight display and modern LED backlight display based on HD44780 are:- Pinout: the two displays have a different pin position and pinout (signals are the same however)- Backlight: the old backlight was electro luminescent (EL), while the new one is LED. This asks for contrast control and a different voltage.- Phisical: the new display has different dimensionsIn the following we will find a solution for every single difference.Pinout and BacklightLook at the pinout comparison. With the exception of the backlight, all the signals (voltages and data) are the same.The only main difference is the physical pins position.For what concerns the backlight, the new display asks for a contrast control. This can be achieved with a simple voltage divider.To help in this part of the project, I have realized a PCB with screen printed pin positions. Simply solder cables straight from the new display pins to the corresponding PCB pins and you are good to go.The board also hosts the contrast voltage divider the LED backlight asks for.Please notice that the PCB is double-faced. Populate the board accordingly to the type of K1000 (keyboard or rack) you are going to install it into!Warning! Kurzweil K1000 keyboard and rack versions have reversed pinouts. The PCB must be assembled in the right direction for the synthesizer type you are going to install it on.Warning! By connecting a K1000 keyboard to the PCB assembled for a rack version, you will fry the display. It will go very hot and it could injury your skin in case of contact!New Display Physical ModificationsThe old, factory, Seiko display and the new one are physically different.Installing it in a K1000 keyboard or K1000 rack asks for cuts on the new display board, at different positions. In particular:- K1000 keyboard: cut the bottom part of the display PCB- K1000 rack: cut the bottom part of the display PCB and both sides.I used a mini driller with a little grinder on top for this operation.In case of the keyboard version, you will additionally need to drill three mounting holes, or glue the display onto the original synthetizer display board.In case of the rack version, the only method I could think of to install the new display was the use of hot glue and some 6 mm spacers. It works well and don't ask for irreversible modifications to your valuable instrument.Warning! While drilling PCBs always wear mask, protective eye glasses and gloves. A lot of dust will be produced. The drilling operation is dangerous also because of the small dimension of the display.

Amiga 500 Floppy Drive LED can also blink when the internal HDD is active.To wire from PIN39 of HDD to the board.It can use either THT and SMT BJT.It requires a female and a male header pin (8).Very compact design.Tested on Rev5, 6, 8.1.