Minimatrix is a tiny (3cm x 3cm) battery powered LED matrix display, reprogrammable over infra-red. It displays marquee text and short animations, which can be programmed using an infrared remote control or from a computer via an Arduino or similar development platform. You can even use it as an interactive display by updating it live!
Minimatrix is based around a small single-color LED matrix and an ATTiny4313 microcontroller. It’s powered by a single coin cell battery, which will last for up to 18 hours hours of continuous operation and months on standby. An IR receiver allows it to receive instructions and data from other embedded devices and standard IR remote controls.
Note that the minimatrix in the video is an early model - the photos show the latest version!
What you get
Your order includes a minimatrix kit in your choice of either red or green, and a CR2032 battery. The IR remote, which is optional but highly recommended, is available separately here.
The minimatrix comes as a kit, with all surface-mount parts soldered, leaving just the battery holder, IR receiver, button and matrix to solder together. If you'd prefer not to solder them yourself, you can get a fully soldered one for $5 extra.
Due to Royal Mail shipping restrictions, orders for more than 4 minimatrixes will ship without batteries. If you'd like to place a large order, please get in touch ahead of time to discuss!
Minimatrix comes preprogrammed with versatile firmware that can do everything you see in the video and more. You can reprogram it yourself, of course, though you'll need a tag-connect cable - due to the limited space, there's no room for a standard ISP header!
Want a minimatrix for free? Contribute a feature, enhancement, or bugfix to the firmware and I'll send you one totally free of charge, anywhere in the world. What counts as an improvement? Here's a few examples:
- Adding a useful new feature
- Fixing an outstanding bug
- Improving code size
- Improving the build or test process
Dec. 6, 2013, 8:11 p.m.
If the led matrix maker needs a high minimum order then how did you get the one for the prototype used in the video? suggestion: 1. couldnt you have the led matrix maker make the unit for you (via consignment)? 2. using the pinouts of the led matrix solder a bunch of individual leds onto the board and then use hot glue to pot them into the board?
Sept. 20, 2013, 4:20 a.m.
Q: Can you join multiple Matrices? Q: Is RGB available in this form factor? I assume the backpack would not work with RGB?
Sept. 20, 2013, 4:30 a.m.
RGB is not available - RGB matrixes don't come in 30mm, and would in any case require a substantially different board.
Sept. 10, 2013, 12:25 a.m.
Is this the same pinout as the programmer pinout on the matrix? https://www.tindie.com/products/rwinscot/tag-connect-to-dip-adapter/ with and without the feets?, and where do one buy these?
Sept. 10, 2013, 12:35 a.m.
It should be, but that board is for using a tag connect with a breadboard, not for adapting a standard programmer to tag connect.
For a tag connect cable, see http://www.tag-connect.com/tag-connect-distributors for a distributor near you. The one you need is the TC-2030-IDC-NL.
July 18, 2013, midnight
Once I've built my Minimatrix, how do I extend it via an arduino?
July 19, 2013, midnight
You can reprogram it and command it over IR. Instructions are available here: http://www.arachnidlabs.com/minimatrix/manual.html and a demo sketch will be available soon.
July 15, 2013, midnight
Can you still get the older remote remote control shown in the video?
July 16, 2013, midnight
I don't have it in stock, but you can obtain them on EBay and other sources easily and cheaply. Note that you'll need to make a few tweaks to the Minimatrix source to accommodate the different codes that remote uses.
April 4, 2013, midnight
What is the shipping cost? Also, if I want to order 2, but only one remote, would it just be easier to place two orders in that case?
April 4, 2013, midnight
Shipping varies depending on destination. For one minimatrix, it's about $6, only slightly more for each extra one.
If you'd like two matrixes but only one remote, it's actually cheaper to buy two with remotes than to pay shipping twice, unfortunately. Or, if you buy 4 or more minimatrixes with the 'NOREMOTE' code, I'll throw one in for free. I'm working with Tindie on better ways to integrate options like this.
Just receive them today and assemble it took about 5 min for both of them very easy to assemble awesome little product like the remote and the good thing is they run on the same frequency program 2 using one remote! Great job on this little gadget! I love it!
Dec. 17, 2013
Very easy to put together, for some reason, I used long time to find the docs (even thought there is an big button for documentation on the productpage, doh..)
It should maybe be mentioned that R1 is not used, I was afraid that I had riped it off (used locking tweezers to hold the button when soldering)
Cant say much about programmability, not quite found out of the remote yet.
Aug. 15, 2013
Rates to United States
|Shipping Rate||First item||Additional items|
|Royal Mail: International Airmail||$5.08||$1.52|
|DHL: Express Worldwide||$45.59||$0.81|