It allows connecting standard PS/2 keyboard to Sharp X68000 (any models).it is a public domain FW project made in Japan.

It allows connecting standard PS/2 mouse to Sharp X68000 (any models).it is a public domain FW project made in Japan.

decided to make me and the boys some keyboards. these boards are feature packed including reversible usb c. first time ever designing a pcb from start to finish. i think it turned out great. best of luck to anyone brave enough to follow in my footsteps. (please note the cover image is of a switch plate for an 80%) the switch plate for this can be found at http://www.keyboard-layout-editor.com/#/ under the default 60% layout.

The Redox is a keyboard project designed with ergonomics in mind. It uses Cherry MX style mechanical switches laid out in a 7x5 columnar stagger layout with components that can easily be sourced.The design was heavily inspired by the Ergodox keyboard, and its main goal is to reduce the size without sacrificing too many keys, hence the name Reduced Ergodox.As an Ergodox user I couldn't ignore the few flaws of the original design and in a moment of arrogance I tried to fix them, thus the Redox features:Easier to reach thumb cluster.Additional easy-to-reach rotated 1.25u thumb key.Reduced size.Reduced costs (the Redox uses Arduino Pro Micro instead of the Teensy 2.0).Either half can be plugged in to the PC since each half can act as the master.Either half can work as a standalone keyboard to be used as a macropad/gaming keyboard.RGB backlighting support.3D-printer friendly case.WirelessVIA compatible (thanks to Harshit Goel)More info at: https://github.com/mattdibi/redox-keyboardThese Gerbers refer to the receiver only. To make a working keyboard you need also two Redox Transmitters PCBs. Please refer to the documentation for more informations.

The Redox is a keyboard project designed with ergonomics in mind. It uses Cherry MX style mechanical switches laid out in a 7x5 columnar stagger layout with components that can easily be sourced.The design was heavily inspired by the Ergodox keyboard, and its main goal is to reduce the size without sacrificing too many keys, hence the name Reduced Ergodox.As an Ergodox user I couldn't ignore the few flaws of the original design and in a moment of arrogance I tried to fix them, thus the Redox features:Easier to reach thumb cluster.Additional easy-to-reach rotated 1.25u thumb key.Reduced size.Reduced costs (the Redox uses Arduino Pro Micro instead of the Teensy 2.0).Either half can be plugged in to the PC since each half can act as the master.Either half can work as a standalone keyboard to be used as a macropad/gaming keyboard.RGB backlighting support.3D-printer friendly case.WirelessVIA compatible (thanks to Harshit Goel) More info at: https://github.com/mattdibi/redox-keyboardThese Gerbers refer to the transmitters only. To make a working keyboard you need also a Redox Receiver. Please refer to the documentation for more informations.

Uses a low cost STM32F103 "bluepill"Two independent PS/2 portsEach port can be connected to a mouse, a keyboard or left unconnected. The connected devices are automatically presented to the host computerAutomatic recognition of the type of the PS/2 device : you can connect any keyboard or mouse on each of the PS/2 connector of the boardNo specific driver required on host computerHardware and Firmware source code provided2 LEDs per port for PS/2 device type identification and traffic information

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.Existe algumas falhas no layout da placa (descobertas apos a montagem):Os furos (3) para prender a parte externa no conector Minidin estao pequenos, foi preciso alagar com a furadeira e bronca de metal (1mm). O furo do pino 13 do conector do teclado esta um pouco distante, mas como usei cabo, nao tive problemas.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.https://luca.msxall.com/teclado_ps2_msx/teclado_ps2.htmNessa página, 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.BMPO conector do PS2 precisa ser soldado para baixo pois está invertido no layout da placa, em caso de dúvidas, conferir no esquema.Pinagem 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).A ultimas tres fotos sao do prototipo que montei. Colocar soquetes para os CI′s e' opcional, coloquei apenas para facilitar na hora de testar.Teclados testados:Funcionou perfeitamente com teclado Compaq branco (antigo, BRAZIL 166516-206)Funcionou perfeitamente com teclado HP preto com prata (model no.: KB-0316, BRAZIL)Funcionou perfeitamente com teclado FABOR (86-SCNB/03-X)Funcionou parcialmente com teclado Logitech preto (Logitech Deluxe 250, falhou as teclas de funcao, setas, ESC e STOP (nao testei home, select, insert)).

This version uses cherry MX switch with LED, SK6812mini-e to give it more fun for user's:) and arduino micro is the microcontroller.

All design credit to: Charles Mangin of option8 and shared here under open source hardwareOriginal Github page: https://github.com/option8/RetroConnector/tree/master/IIc-USBRequired Materials:Teensy ++ 2.0 - https://www.aliexpress.com/item/32559849517.html?spm=a2g0o.productlist.0.0.30522a85DaStlh&algo_pvid=500eaaf0-271a-4f4f-987c-272ebea69980&algo_expid=500eaaf0-271a-4f4f-987c-272ebea69980-1&btsid=0bb0624316156615877137420eea5f&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_Male header pins - https://www.mouser.ca/ProductDetail/TE-Connectivity/2-826646-0?qs=sGAEpiMZZMvlX3nhDDO4AF9ulCqrHfKqye%2FbzqB9qOQ%3Dfemale headers - https://www.mouser.ca/ProductDetail/855-M20-7822046box header (34-pins for //c, 26-pins for //e) - https://www.mouser.ca/ProductDetail/571-5103308-7Software:RetroConnector firmware https://github.com/option8/retroconnectorArduino software http://arduino.cc/en/Main/Softwareteensyduino library http://www.pjrc.com/teensy/td_download.htmlkeypad.h library http://playground.arduino.cc/Code/Keypad

This is a faceplate for the Atari 2600 Keyboard, a recreation of the Atari CX-50 controller with better switches and now you can even get some pretty faceplates for it as well. This reversible faceplate has been designed for use with the synthcart by Paul Slocum - a basic audio synthesizer for the Atari 2600, featuring an argeggiator as well as built-in rhythm patterns (I don't know what that is, but I hope to find out).For the actual keyboard module, as well as other faceplates that are available - check out the other shared projects relating to this project.

This is a faceplate for the Atari 2600 Keyboard, a recreation of the Atari CX-50 controller with better switches and now you can even get some pretty faceplates for it as well. This is the standard faceplate and has been made so that it is reversible, meaning that on one side you have the numeric buttons that should be familiar to anyone that remember phones that were tethered to the wall. The other is a rendition of the faceplate that was supposed to come with my copy of Star Raiders, but it didn't and I wanted one - so that's what you get for the other side.For the actual keyboard module, as well as other faceplates that are available - check out the other shared projects relating to this project.

This is a faceplate for the Atari 2600 Keyboard, a recreation of the Atari CX-50 controller with better switches and now you can even get some pretty faceplates for it as well. This reversible faceplate has been designed for used with the Basic Programming cartridge, both the left and right controller shortcuts have been added to them. For the actual keyboard module, as well as other faceplates that are available - check out the other shared projects relating to this project.

Did you know that the Atari 2600, the very definition of 70s video game consoles, was able to run Basic and had a keyboard make for it? I didn't either until I bought one, then the required Atari CX-50 controllers - which was practically unusable despite never having been used. They were that amount of painful to use. Also, there were supposed to be keyboard overlays so that you could remember what every button is supposed to do.Well, I designed a new one based on the old service manuals - one that uses the cheapest switches imaginable, the standard 6x6mm momentary switches and they were actually a lot better to use. Then I bought some 6x6mm keycaps for them, and the result was actually pretty enjoyable so I'm sharing the design files so that everyone can finally have an acceptable keyboard for their Atari 2600. I've created a set of faceplates as well, these mount on top of the unit and have been made reversible so that a single PCB will have two versions of the design on them. Check out Atari 2600 Keyboard for everything related to this project.

keypad for software developer keyboard.I did this to speed up writing code.One leg of the buttons will be connected to GND and the other legs to digital pins.

An ESP32 module comes with a lot of different features. One of such features is it’s touch capability. In fact it is so well, that you can use the touch functionalities, right out of the box! You just need a piece of metal wire connected to a touch pin and you are good to go. No extra hardware is required. Now, there are 10 such touch enabled GPIOs available on the ESP32 chip. Which you can use to make some amazing projects. Such as this tiny touch remote. You can use this as a mouse for your PC, a remote for your smartphone camera or even you can integrate this in your home automation system to control your smart appliances.Let’s start with designing the circuit. So this is the schematic of the project. It only consists of a few components. Besides ESP32 we have a micro USB connector along with the USB to Serial IC to program the chip. Then we have the 3.3 volt voltage regulator. A battery connector along with the charging circuit. After designing the PCB i head over to PCBway for manufacturing this PCB. After a few days I got the PCBs at my doorstep. After assembling it I connect the battery to the battery connector to see if we are able to charge the module. Which it does as intended. Next I hooked up a micro USB connector to upload a test sketch to get the touch pad readings. And the program gets uploaded successfully. So the programming circuit is also working. And if I open up the serial monitor at this point you will see that we are getting some values. When we touch a pad the value of the corresponding pin is also changed confirming that the touch pins are also working just fine.Here I have used BLE Mouse Library to control mouse movements over Bluetooth. After uploading the code open bluetooth settings and click on add new device. From there select E.S.P 32 bluetooth mouse and it will be connected and now we can use this module as a wireless mouse emulator to make mouse movements using the touchpads. We can also use it to communicate with other E.S.P 32 boards to for example turn on and off a light bulb or dim it’s brightness. Therefore you can do a lot of things with it.

For a long time, I needed a simple device allowing me to send varying mouse and keyboard commands to test some of my web applications and games on browsers. Also, I could utilize such a device to test keyboard and mouse functionalities of new single-board computers, for instance, Raspberry Pi, without kvetching about my lack of a proper keyboard and mouse :) Thus, I decided to create this project.First of all, to be able to send keyboard and mouse commands via USB, I used an Arduino Pro Micro centered around an ATmega32U4 - an 8-bit AVR very similar to the ATmega328. The ATmega32U4 comes equipped with a full-speed USB transceiver, which can emulate any USB device.Then, I utilized the 4x4 matrix keypad design to send keyboard keys, supporting up to 32 keys with two dynamic keypad options.Finally, I used two joysticks as a fully-functional mouse, also controlling the dynamic keypad options and modifier keys.After completing my design on a breadboard and testing the code, I designed a controller-shaped PCB (Arduino-Based Mouse and Keyboard Controller) with an integrated 4x4 matrix keypad and two embedded joysticks, displaying Pikachu as its center logo :)Click here to inspect the project tutorial including code files.