Index of /Digital/Interfaces
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Still online, we are. The code for this website is getting old, but still works well as far as I've seen. I may update it with new code and new features eventually, one day when I have both free time and focus. Until then, the content is still useful, I'm keeping it online. Comments and donations are welcome, but include your email address if you want a reply.

Ideas for the future of the site -
Here are some ideas I've been brainstorming. I don't think to much of the site should change, because it has been successful all these years with very little change. still nearly 1000 visitors a day to the site!
  • donations - I think it might be time to make some changes to the donations. I would rather see people get a lifetime membership and not have to worry about an expire date. here's an idea, a smaller recurring payment monthly, or 4 times a year, then maybe offer a second option, donate enough to cover the cost of the server for one month and you'll get a lifetime membership that never expires.
  • automated account creation - the membership process should be automated. I rarely hear a complaint about anything, but I don't think people feel so safe emailing me a username and password to set up an account. I think people may feel more safe dealing with an automated system. make a donation, then type your account into right in to the computer and have it set up on the spot.
  • members only forum - the site doesn't seem to need a full forum, but it could still benefit from a single simple board or mailing list, maybe. still optional, but maybe only available to members. non-members wouldn't be able to post on or see the forum. for those who donate to openly communicate.
You can send me your comments in the form above. I'm not putting any work into these changes without getting feedback from you!
If we have any web developers out there, we'd love your help! come on, my birthday's tomorrow!

Better forum? -
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ideas or comments?
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new server -
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<-- Old News -->

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Last Accessed Size  File
02-18-19 572035  4 to 20 mA Microcontroller Interface.pdf
02-18-19 179136  8088 I O Ports.PDF
02-18-19 830669  8255 Ppi Ibm Interface Card.PDF
02-18-19 15216  AES - EBU a n d SPDIF Digital Audio Interfaces.ZIP
02-18-19 16659  AES-EBU Interface FAQ.ZIP
02-18-19 44163  ARC's RS422  Tutorial & info on converters.mht
02-18-19 83493  Acoustic Coupler Driver.pdf
02-18-19 112544  Adaptec AVA-1502E ISA to SCSI Host Adapter OM.pdf
02-18-19 8948631  Adding I-O Ports to Microcomputers.pdf
02-18-19 2847014  All About Interfacing Part 2.pdf
02-18-19 583  Analog Switch Expands I²C Interface - Maxim.mht
02-18-19 78237  Analog-Input Circuit Serves Any Microcontroller.pdf
02-18-19 245641  C Application Controls Simple ADC.pdf
02-18-19 20654  CMOS to TTL Interface with the 555.pdf
02-18-19 219456  Capacitance Sensor Interface.pdf
02-18-19 910061  Control Individual Parallel Port Lines
02-18-19 45124
02-18-19 10387  DEBOUNCE BETTER.gif
02-18-19 14325  DEBOUNCE BETTER.jpg
02-18-19 1098  DEBOUNCE.gif
02-18-19 644  DEBOUNCE.jpg
02-18-19 229897  Digital I-O Adapts to Many Interface Voltages.pdf
02-18-19 8676  Driving A Triac From A Pc.gif
02-18-19 38556  Driving A Triac From A Pc.jpg
02-18-19 22607  Driving LEDs from TTL.pdf
02-18-19 866237  Equalization Enhances RS-485 Links.pdf
02-18-19 930577  Experimenters ISA I-O Board.pdf
02-18-19 76386  Extend Ratings of One Wire Swirches.pdf
02-18-19 263030  Fundamentals of RS-232 Serial Communications.xps
02-18-19 478601  Galvanic Isolation for I2C Communications.pdf
02-18-19 4461595  How to Add I-O Ports to Microcomputers.pdf
02-17-19 26338  I2C - RS-485 adapter.mht
02-18-19 6233  ISA_to_8255_output_port.gif
02-18-19 1727  ISA_to_8255_output_port.jpg
02-18-19 114590  Increase Number of UARTS available from an MCU.pdf
02-18-19 404011  Industrial USB.pdf
02-18-19 91918  Inputing Parallel Data into a uC with one pin.pdf
02-18-19 375423  Interfacing CMOS.pdf
02-18-19 98320  Isolated 4-20 mA Current Loop.pdf
02-18-19 15656  Isolated I2C Interface.pdf
02-18-19 132136  LVDS Serializer-Deserializer Performance over Twisted Pair Cable.pdf
02-18-19 584  Level Translators For SPI™ and I²C Bus Signals - Maxim.mht
02-18-19 853599  Light Pen Information.pdf
02-18-19 64830  Logic to Load Drivers.pdf
02-18-19 505523  Maximizing ESD Immunity in Serial Buses.pdf
02-18-19 349376  Networking Processor Peripherals with I2C.pdf
02-18-19 2710324  PC Hardware Interfacing.pdf
02-18-19 7841921  PC I-O Breadboard.pdf
02-18-19 2018335
02-18-19 1012617  Parallel Port Interface
02-18-19 243936  Pc I O Interface.GIF
02-18-19 20286  Pc I O Interface.jpg
02-18-19 2018335  Pc
02-18-19 4578  Pcmcia Connector Pinout.txt
02-18-19 76466  Printer Interface Cardco For C64.pdf
02-18-19 54159  Programming Considerations for Real-time IO.mht
02-18-19 530858  RS-485 - Passive failsafe for an idle bus.pdf
02-18-19 22834  RS485, RS232, RS422, RS423, Quick Reference Guide.mht
02-18-19 195886  Roman Numeral Digital Display.pdf
02-18-19 4133  SP-DIF Information.TXT
02-17-19 280517  Selecting and Using RS-232, RS-422, and RS-485 Serial Data Standards.xps
02-18-19 147602  Serial to RS-485 Adapter pcs71id1.jpg
02-18-19 92979  Talk to Multiple Devices with One UART.pdf
02-18-19 288524  Tiny USB to I2C Adapter.xps
02-18-19 704664  USB-2-I2C conversion board schematic AV02-0065EN.pdf
02-18-19 385274  Usb On-The-Go Basics.pdf
02-18-19 332686  Using a PC's RS-232 Serial Port To Communicate with 2-Wire Devices.xps
02-18-19 2314  a translator from 5 to 3V.gif
02-18-19 8315  a translator from 5 to 3V.jpg

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