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ajlitt

Amateur take-apartist and SnPb enthusiast

Austin, Texas
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170 Followers
6 Following
6 Projects
695 Likes
ajlitt
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This user joined on 02/03/2015.

136.7k
617
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Fast RPi WiFi without USB
Project Owner Contributor

RPi WiFi

ajlittajlitt

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5 Raspberry PI Zeros. One custom USB hub. Endless disappointment.
Project Owner Contributor

Terrible Cluster

ajlittajlitt

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'70s microcomputer meets '80s handheld game
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Blinkencard - Pocket Altair 8800

ajlittajlitt

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Every Day Carry bit flipper
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Tiny Bit Dingus

ajlittajlitt

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Turning a wireless mouse USB adapter into a quadcopter transmitter
Project Owner Contributor

Crazyradio for Cheapskates

ajlittajlitt

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In which the author runs open source firmware on a palm sized quadcopter
Project Owner Contributor

BradWii on the Hubsan Q4

ajlittajlitt

  • Tindie
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A place for Tindie sellers and the community to meet and stretch their legs
Project Owner Contributor

Tindie Dog Park

tindieTindie

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488
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The chatroom about RPi projects, issues, contests entries and more
Project Owner Contributor

Raspberry Pi chat

sophi-kravitzSophi Kravitz

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Developing the most comprehensive component search in the world. Join in the quest to find perfect parts!
Project Owner Contributor

Parts.io Labs

chris-gammellChris Gammell

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Making the most of non-ideal components in a non-ideal world.
Project Owner Contributor

Multislope ADC

nnniNNNI

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An open-source ereader that can display books from an open, self-hosted server
Project Owner Contributor

FLOSS Book Serving System

guyrandy-jean-gillesGuyrandy Jean-Gilles

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27
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A retro-microcomputer in a micro-package. Learn from the ground up, just like the pioneers. Has monitor editor assembler BASIC FORTH LISP...
Project Owner Contributor

1802 MemberChip Card

lee-hartLee Hart

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23
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Use this to distract your customers. This one will stay on top of their desks instead of getting lost in a drawer.
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Integrated Game Business Card

dan-schnurDan Schnur

2.9k
28
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Animated Avatar On a Business Card
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CardTuber

river-wangRiver Wang

2.8k
25
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It's the 40th anniversary of the original Macintosh. Why not recapture the magic in an SAO?
Project Owner Contributor

Macintosh SAO

aaronAaron

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29
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A wrist watch that uses rare vintage LED dot-matrix HDSP-2000 indicators
Project Owner Contributor

HDSP-2000 Wrist Watch

vitaliiVitalii

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Smol replica of a massively parallel, hypercube interconnected neat-o computer from the 90s.
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1:10 scale Connection Machine

trevor-flowersTrevor Flowers

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Turning the classic analog physics simulation into an interactive experience with an accelerometer and a handheld CRT display
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Ball-in-box simulator with REAL gravity

wlf647wlf647

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Door entry tools about the size of a credit card.
Project Owner Contributor

Credit card door entry tools

maaveMaave

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Two-part keyboard which supposed to be foldable but can be whatever
Project Owner Contributor

MOK keyboard project

mkdxdxmkdxdx

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Cherry MX compatible upgrade for Mitsumi mylar keyboards in Texas Instruments TI-99/4A computers - using original keycaps.
Project Owner Contributor

KEYBOARD/4A-99

troy-schrapelTroy Schrapel

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Core16 makes it easier to get started weaving your own Interactive Core Memory. You can do a lot of fun stuff with it after it is assembled!
Project Owner Contributor

Core16: Interactive Core Memory Made Smaller

andy-geppertAndy Geppert

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Exploration of calculators, their emulation, mechanical aspects such as pretty buttons and quirky displays
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Calculators

svofskisvofski

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An experiment to measure Compton scattering using a low-cost and low-power gamma spectroscopy detector I am developing.
Project Owner Contributor

Compton scattering experiment

mihaicuciucmihai.cuciuc

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Re-creating an equivalent of a spark chamber to see trajectories of muons from cosmic rays
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Cosmic Pixels

muthMuth

665
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stm8 one octave synth with
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Cardware synthesizer

the-devil-itselfThe-Devil-Itself

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This bandage utilizes a flexible PCB, shaped in a form of a bandage for easy use. It is equipped with ESP-C3 for BT and a temp sensor.
Project Owner Contributor

ESP patch

dimitarDimitar

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mihai.cuciuc wrote 05/17/2024 at 04:53 • point

Hi! Thanks for your interest in #Compton scattering experiment!

  Are you sure? yes | no

Mitsuru Yamada wrote 08/07/2021 at 23:26 • point

Thank you for liking my #Homemade Floating Point Interpreter for 6502 !

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Michael Gardi wrote 02/10/2021 at 01:37 • point

Thank you for your interest in my 2:3 Scale VT100 Terminal Reproduction project.

  Are you sure? yes | no

kristina panos wrote 01/12/2021 at 18:54 • point

Hello and thank you for liking my #practice backpack project!

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Dr. Cockroach wrote 07/02/2020 at 09:36 • point

Hey there ajlitt and thanks for the follow/like of #LLTP - Light Logic Transistorless Processor 

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Starhawk wrote 05/03/2020 at 20:13 • point

...breaking from form, just for a moment (forgive me!)... I really like your Blinkencard project -- but how hard would it be to add the switches and rework it to use an ESP8266 and either a huge stack of shift reg ('595s and 4021s come to mind!) or input expander chips...?

I'm dirt cheap out of necessity... could probably do it on two perfboards (size is not a significant concern) but I have neither FPGA nor ESP32. Also, not having switches kinda bums me out.

It'd be super cool if I could somehow work in disk emulation with eg a FAT32 SD Card or something... and full emulation of the OS... mind you, I'm absolutely not a programmer, tho... someone else would have to implement that. I can help test but I'm absolutely not competent beyond that.

  Are you sure? yes | no

ajlitt wrote 05/04/2020 at 15:48 • point

Thanks! The Blinkencard is an emulation of the underlying logic of an Altair, and is a project I came up with to give me an excuse to play with FPGAs. I'm sure you could do the same on an ESP8266, but it would have to be a software emulation. There's an Arduino-based Altair emulator that could be a basis for such a project on ESP*: https://create.arduino.cc/projecthub/david-hansel/arduino-altair-8800-simulator-3594a6

You may be able to do what you're talking about if you stick to emulating Altairs with little ROM or RAM, and you may need to build baremetal instead of with wifi. The shift registers would certainly work, but may be flickery. I'm only multiplexing in banks of 8 LEDs with the FPGA emulation, and even then I've had to tune the scanning so that the LEDs look right. This may be a place where you could abuse the I2S interface on the ESP8266 to clock the shift registers consistently and quickly.

I'm fairly cheap as well, and I thought about cost from the beginning. My first design used an FTDI FT2232 for firmware loading and serial terminal, but the FTDI was about as much as the FPGA. Using an ESP32 lets me get rid of the FTDI and config flash for the FPGA, and accounting for the support components for the FTDI is about half as expensive. I plan to use the ESP32 for additional stuff like viewing the LEDs and controlling switches from a webpage andacting as a disk drive using a file in the ESP32's flash as a disk image.

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Starhawk wrote 05/03/2020 at 20:06 • point

NOW FLASHED A NORFOLK KILT

;)

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ajlitt wrote 05/04/2020 at 15:52 • point

CELERY MEOW YOU RAVE

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Starhawk wrote 05/04/2020 at 17:54 • point

SOY LEAKAGE RUIN A SEMI

;)

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Daren Schwenke wrote 09/22/2018 at 08:50 • point

Thank you for the like of the #Arcus-3D-C1 - Cable 3D printer .  Better late than never..  (finishing it up). :)

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uri.shani wrote 09/03/2018 at 08:07 • point

Thanks for liking #Cap-sense name card!

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Patrick Van Oosterwijck wrote 07/28/2018 at 02:02 • point

Thanks for your interest in my #wESP32: Wired ESP32 with Ethernet and PoE project! :)

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Bharbour wrote 01/14/2018 at 12:51 • point

Thanks for liking my #EL Wire Clock 

I like your cat picture!

  Are you sure? yes | no

Dr. Cockroach wrote 09/28/2017 at 08:32 • point

Good morning Ajlitt and thanks for liking my Uglytech relay :-)

  Are you sure? yes | no

Ed S wrote 07/27/2017 at 15:14 • point

Thanks for liking our #OPC-5 - a CPU for FPGA, in one page !

  Are you sure? yes | no

RUN.CAM wrote 07/12/2017 at 15:48 • point

Thank you for following RGGBer project. It is now live on 

https://www.crowdsupply.com/jie-zou/rggber-dev-kit and we will launch it in Aug 2017 and you may sign up for latest information. RGGBer Dev Kit makes embedded vision development easy!

  Are you sure? yes | no

Patrick Van Oosterwijck wrote 05/29/2017 at 18:40 • point

Thank you for liking and following my #LiFePO4wered/Pi+ project ajlitt!

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Eric Hertz wrote 03/08/2017 at 13:35 • point

Hey ajlitt, Thanks for the 'like'!

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RUN.CAM wrote 10/28/2016 at 08:14 • point

Thanks for your follow. These have been several updates in logs.  Enjoy!

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naxxfish wrote 10/24/2016 at 17:52 • point

Hey, thanks for the like on Holst! I hope you find the documentation interesting as I piece it together. Like your projects, will definitely check them out :)

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MECHANICUS wrote 04/27/2016 at 05:46 • point

Thanks for liking my project bro! Sweet cat, should make a hairball supercapacitor!

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Nicolas Berger wrote 02/03/2016 at 22:43 • point

Thank you for your interest in the Joysix. I will do my best to update and document it!

  Are you sure? yes | no

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