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Bill Smith

I&apos;m fond of software development, mathematics and library science. <a target="_blank" rel="noopener noreferrer" href="http://blog.sesquibits.com">http://blog.sesquibits.com</a>

Indiana
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20 Following
4 Projects
bill-smith
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This user joined on 09/30/2015.

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Is it possible to make a latch with one transistor? Is it possible to use it to make logic?
Project Owner Contributor

One Transistor Latch

bill-smithBill Smith

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A project to continually display the distance to every planet
Project Owner Contributor

How Far is Mars

bill-smithBill Smith

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The wise kitchen helps individuals with different capabilities meet their dietary goals
Project Owner Contributor

Wise Kitchen Initiative; Novitiate Candy Cooker

bill-smithBill Smith

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A heat exchanger made by counter-current flow of air through a network of 3-d printed tiny channels
Project Owner Contributor

3-d printed Rete Mirabile

bill-smithBill Smith

Things I've Built

Decimal Clock

A Clock that keeps time in decimal fractions of a day. Made before microcontrollers--all TTL. My mom made a stained glass box. It works out that 15 minutes is pretty close to 1% of a day.

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An Arduino based Solar MPPT charge controller.
Project Owner Contributor

ARDUINO MPPT SOLAR CHARGE CONTROLLER

open-green-energyOpen Green Energy

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Follow for the 'Hacklet' and latest news about hackaday.io
Project Owner Contributor

Hackaday.io Project

lutetiumLutetium

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An open source hydroponic garden control, monitoring, and grow system with cloud database and dashboard.
Project Owner Contributor

HydroPWNics

avrAVR

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Creating a design for a CNC that is easy to replicate and suitable for diverse drives.
Project Owner Contributor

Self replicating CNC for 194 (or more) countries

norbert-heinzNorbert Heinz

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ED-64 will be an 8-bit computer built with discrete components, and will feature a ferrite core memory (documented as a separate project).
Project Owner Contributor

ED-64: A discrete 8-bit computer

andrew-starrAndrew Starr

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Bussines Card with PC interface via Micro USB Type B PCB connector that acts like a gamepad. USB connectors for FREE!!!
Project Owner Contributor

Business Card Gamepad

juan-jesusjuan jesus

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I have trained wild magpies in my Garden to trade litter for food! The whole project relies on mechanical design, electronics, software and
Project Owner Contributor

BirdBox

hfor62hfor62

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Flip-Flop design with just one transistor. Nice for transistor-CPU's ! The principle can also be used for vacuum tube flipflops.
Project Owner Contributor

One Transistor FlipFlop

roelhroelh

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Official hackaday.io API project
Project Owner Contributor

Hackaday API

richard-hogbenRichard Hogben

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Four channels of DMA, plus 1MHz ADC on PIC32 and a cheap TV make a good audio rate scope for less than $22.
Project Owner Contributor

PIC32 scope, 1 Megasample/sec

bruce-landBruce Land

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A digital clock made from many analog clocks
Project Owner Contributor

Clock Clock Clone

rayRay

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Cubes made from two-way mirrors and custom LEDs that allow you to create models, forests, and galaxies that seem to go on forever!
Project Owner Contributor

Pocket Universes

ssutton4455ssutton4455

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one does not simply order 50 ws2812b LEDs and has a 3D printer at home
Project Owner Contributor

RGB 16 Segment LED

davedarkodavedarko

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A community project to explore diodes as active devices. Collaborators welcome; leave your transistors at the door.
Project Owner Contributor

Diodes Only

ted-yapoTed Yapo

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Modify an Axidraw to cut vinyl, paper, foil and plastic for under $20
Project Owner Contributor

Axidraw vinyl/paper cutter

mattMatt

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Simple open source Arduino shield for programming ATmega328s, ATTiny2313 and ATtiny85 (and those ICs with similar footprints).
Project Owner Contributor

AVR ISP Arduino Shield

benphenoptixben.phenoptix

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Reading, lectures, assignments, and student work using Matlab and analog interface to analyze biological signals. (2013)
Project Owner Contributor

Teaching Bio-electronic Instrumentation

bruce-landBruce Land

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I'm building a clock using IN-14 Nixie tubes [WIP]
Project Owner Contributor

Nixie clock

niekNiek

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roelh wrote 03/31/2018 at 07:37 • point

Hi Bill, thank you for liking the one transistor flipflop, https://hackaday.io/project/112126-one-transistor-flipflop ! And thank you for your inspirational One Transistor Latch !

  Are you sure? yes | no

jlbrian7 wrote 11/04/2015 at 18:47 • point

I like your blog, there is a lot of good stuff there.

  Are you sure? yes | no

Bill Smith wrote 10/24/2015 at 20:35 • point

Thanks!  I haven't checked the sources that i used 8 or 9 years ago to see if they still exist.    I've got 6 vendors so far in my list

  Are you sure? yes | no

Dave Vandenbout wrote 10/24/2015 at 17:54 • point

Saw your comment about PCB fabs. Check out PCBWay. Fast and cheap, plus they can do 4-mil trace and space. I used them for the CAT board because none of the other low-cost fabs could get below 5-mil.

  Are you sure? yes | no

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