A 15cm Interactive Binary Ruler with Seven Logic Gates, Four Flip Flops and a Four Bit Binary Counter.Designed by bradsprojects in Australia
Update 16 January 2020: For those who have purchased the SMD kit - you can get an instructional video and PDF from the Digirule webpage (just scroll down to the bottom, just before the comments sec...Read More…
Update 16 January 2020: For those who have purchased the SMD kit - you can get an instructional video and PDF from the Digirule webpage (just scroll down to the bottom, just before the comments section). The video is embedded into the webpage while the PDF instructions are now included in the download on that page. The link is HERE.
Update 04 January 2020: I have added a few extra buying options for the Digirule as follows: - Factory seconds: These are Digirules that function correctly, however they have blemishes such as misaligned components, LED's that have turned a bit brown on the outside, resoldered components, imperfect silkscreen, boards that haven't been cleaned etc. - Faulty Digirules: These have faults such as missing components, broken components, misaligned components etc. They are being sold in lots of two, in the hope that the buyer can make a working unit out of the two. - Digirule Kits: These kits are for those who want to try their hand at fine surface mount soldering to construct your own Digirule. The kits come with a blank Digirule PCB and all associated components (except the battery due to shipping restrictions) and assembly instructions.
There are two versions of the Digirule available on this page - the original Digirule 1 and the newer Digirule 1A. While they both essentially do the same thing, the newer version has improved buttons and has had the firmware completely re-written in C by Brent Hauser. Both the Digirule 1 and 1A can be seen in the images above.
I’ve seen a number of PCB rulers out there however they weren't interactive. I wanted one with LED's and buttons that you could play with - so I made the DigiRule! – The DigiRule is a 15cm (6″) ruler which is marked in binary digits rather than decimal. It has a number of built in digital functions including:
Four bit binary up/down counter
The Digirule also features 8 extra hidden 'easter egg' modes:
It is powered by a single 3V CR2032 button battery and the brains of the unit is a PIC 18F45K20 microcontroller. The functions listed above are controlled by nine surface mount push buttons and has twenty three surface mount LED’s to show the status of the inputs and outputs.
The rear of the ruler contains logic gate and flip flop truth tables, a binary conversion chart, a few select SMD component footprints and some drill hole sizes.
Full details can be found on the Digirule page on my website including:
Shipping is from Australia by either the cheap non-tracked option (which takes between 2 and 6 weeks) or the tracked option (which could still take up to 2 weeks.) The CR2032 coin cell battery which is required to power the Digirule is not included due to shipping restrictions on batteries.
If you have any questions or concerns about any of my products before or after purchase, please let me know and i'll do all I can to help.
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|Shipping Rate||Tracked||Ships From||First Item||Additional Items|
Rob | July 29, 2020
Brendan | Jan. 27, 2020
Michael | Jan. 19, 2020
Lorenz | Nov. 18, 2019
Mario | Sept. 9, 2019
Thomas | Sept. 8, 2019
Edward | Sept. 6, 2019
Alex | Aug. 19, 2019
Gregory | Aug. 18, 2019
Valerio | Aug. 18, 2019
Jono | Aug. 15, 2019
Arnaud | Aug. 14, 2019
Eugene | Aug. 13, 2019
Paul | May 26, 2018
Benedikt | May 20, 2018
Niklas | May 20, 2018
Michael | May 18, 2018
Vincent | May 17, 2018
Alan | May 17, 2018
Rik | May 10, 2018
Tom | May 3, 2018
Rolf | April 13, 2018
Phillip | Feb. 28, 2018
Carrie | Feb. 10, 2018
Robert | Aug. 28, 2017
Thomas | Aug. 25, 2017
Sean | July 28, 2017
Ian | July 27, 2017
Lynnard | June 22, 2017
Manuel | June 20, 2017
Wesley | June 20, 2017
Daniel | June 20, 2017
Matt | June 6, 2017
Gerard | June 4, 2017
Volker | June 4, 2017
Bruce | May 26, 2017
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