How can we connect a USB Keyboard to an Arduino? Let´s find out. Of course you can also connect a legacy PS/2 keyboard by the way shown in this video. Unfortunately there seem to be some newer USB keyboards around that no more support the PS/2 protocol. Sources and schematic: https://create.arduino.cc/projecthub/michalin70/connect-a-usb-keyboard-with-an-arduino-50c077 Tools: Camera: https://amzn.to/3kDp1BJ USB Oscilloscope: https://amzn.to/3CMC7Tu Consider to support this channel on Patreon and get updates about ongoing projects and preview videos! https://www.patreon.com/docvolt Buy me a coffee: https://www.buymeacoffee.com/docvolt Paypal: https://www.paypal.com/paypalme/docvolt 0:00 Introduction 0:40 Description of the PS/2 protocol 1:41 Writing a simple keyboard routine for an Arduino Nano 2:40 PS/2 scancodes 3:50 Example: Typing on a LCD display ... https://www.youtube.com/watch?v=Bv_zbPUtAuQ

This video shows a homemade 8-bit graphic card based on a TMS9918 Video Display Processor. It can be used with Arduino (Library can be downloaded from Github, see link below) as well as with any other system. Also tried with my DIY Z80 computer. The circuit was built on a PCB from PCBgogo.com, who also sponsored this video. New customers get 30% off when choosing their components sourcing service: https://www.pcbgogo.com/SMT_discount.html Schematics, gerber files and Arduino library with examples can be found on Github: https://github.com/michalin/TMS9918_Arduino Tools: Camera: https://amzn.to/3kDp1BJ USB Oscilloscope: https://amzn.to/3CMC7Tu Consider to support this channel on Patreon and get updates about ongoing projects and preview videos without ads! https://www.patreon.com/docvolt Buy me a coffee: https://www.buymeacoffee.com/docvolt Paypal: https://www.paypal.com/paypalme/docvolt 00:00 - Introduction 00:35 - The TMS9918 VDP, what is it 01:19 - Interfacing the VDP 02:18 - Workaround: Replace DRAM by SRAM 02:41 - How 4116 DRAM works 04:28 - Ordering the PCB from PCBgogo (Promotional part) 06:26 - Using the Arduino Examples 07:01 - Connecting with a Z80 (teaser) ... https://www.youtube.com/watch?v=GUQpiGspY08

The WIO terminal is an amazing Arduino compatible development board with a 320x240 LC Display, a powerful ARM Cortex M4 running at 120MHz (can be overclocked up to 200 MHz) and many useful sensors. See a short review and introduction on how to make awesome projects with it. Tools: WIO Terminal: https://amzn.to/3FO47qR Camera: https://amzn.to/3kDp1BJ Consider to support this channel and get updates about ongoing projects and preview videos! - https://www.patreon.com/docvolt - Buy me a coffee: https://www.buymeacoffee.com/docvolt - Paypal: https://www.paypal.com/paypalme/docvolt Read more: https://www.seeedstudio.com/Wio-Terminal-p-4509.html https://wiki.seeedstudio.com/Wio-Terminal-Getting-Started/ 00:00 - Introduction 00:22 - Hardware, CPU and sensors 02:35 - Getting started with programming 03:15 - Codecraft - a block based online programming tool 05:21 - Programming the digital ports 06:48 - Testing the display 07:26 - Conclusion ... https://www.youtube.com/watch?v=FAuBJwZ7GKs

Have you ever been missing a desperately needed logic chip? In this video I show a way that can help you out. Get your PCB for this project from PCBgogo at https://www.pcbgogo.com/promo/DoctorVolt Schematic and Software: Afterburner https://github.com/ole00/afterburner Parts and Tools: Camera: https://amzn.to/3HkUJO0 Multimeter:https://amzn.to/3NLlTjb ATF16V8B: https://amzn.to/3cGQ4dI Consider to support this channel on Patreon and get updates about ongoing projects and preview videos without ads! https://www.patreon.com/docvolt Buy me a coffee: https://www.buymeacoffee.com/docvolt Paypal: https://www.paypal.com/paypalme/docvolt 00:00 - Start 00:56 - Programmable Logic Devices (PLD) 01:36 - Generic Array Logic (GAL) 02:40 - GAL16V8 and Atmel ATF16V8 03:02 - Principle of the GAL: Fuse Map 04:38 - Output Logic 05:34 - The JDEC File Format 05:58 - WinCUPL 07:01 - Burning the GAL with Afterburner 07:23 - The Circuit 08:43 - Programming the 16V8 09:51 - Making a 7-Segment counter ... https://www.youtube.com/watch?v=fCsP7ujMJV8