beatseqr

Beatseqr version 4.x assembly video

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As usual, when you don’t hear from us, we’re cooking up new stuff. Here’s the assembly video for the version 4.0 circuit board.

The main new features of version 4 are:

* changed form factor to accommodate being able to be placed in a new case that I’ve sourced.
* added a parameter record button. This is going to be awesome, so more info will come when we’ve been able to bake the sequencer more for this feature.
* improved the placement of the arduino mega so that the USB port is closer to the edge of the board
* improved all of the hole sizes for the LED tact buttons
* when I though to, I added secondary holes for potentiometers in case you ever need that.
* added a small prototyping area for ad-hoc needs.
* hardwired the mode button LEDs up to 5V so that they’re on all the time, which freed up three pins on the arduino. One of those was used for the parameter record button
* TWO UNUSED PINS. They’re digital in, and PWM out. You could put two more buttons on here, or switches, or LEDs… or serial devices and drive input/output with softwareserial in the arduino code. You could, in theory, add two more LCD screens using the moderndevice.com driver boards or similar serial input display drivers. All kinds of things. Oh, Maybe you want to add a couple of midi ports? Hmm!
* generally labeled a lot of things on the board so you know what you’re looking at.
* had to rewire an awful lot of stuff to make the autorouter happy. So consequently, the firmware has changed somewhat significantly. I don’t exactly know what the right method is going to be to keep the 3.x units up to date, but we’ll get something figured out.

known problems:
* one of the buttons needs a jumper wire to ground. I’ll certainly get that fixed next time I order boards, but it’s an extremely minimal bug fix to perform.

Kits: Serial numbers 1, 2, and 3

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Okidoke. It’s taking me a while to get my act together, but I’m getting there. I have three kits available. They are kit serial numbers 1, 2, and 3.

The kit includes:

1. circuit board
2. eight 10k faders
3. two 10k potentiometers
4. thirty two LED Tact buttons (16 red, 16 green)
5. sixty four 100 ohm resistors
6. 9 various values of resistors other than 100 ohms
7. 16 x 2 LCD screen from Modern Device
8. LCD driver board kit (assembly is required) from Modern Device (where you will get the assembly instructions, BTW)

Things *not* included:
* Arduino Mega
* enclosure + hardware

Price is $249 plus shipping, payment via paypal, shipment via USPS if international, UPS if within the USA.

I even made two videos showing how to assemble the kits, so watch these before you do anything else. Make sure these totally makes sense to you, and you have no reservations about your ability to put this kit together. It’s not a particularly hard kit to put together, but there is a lot of repetitive soldering involved, so you’re the right candidate if you’re already comfortable with soldering, and you already have all of the tools you see in the videos. You’re also already familiar with the arduino platform and ALSO completely realize that this kit runs on the ARDUINO MEGA, and NOT any other variant. If you don’t have an ARDUINO MEGA, you NEED to BUY one. 🙂 I’m using every single pin on the mega. I couldn’t squeeze this much functionality out of a regular arduino… it’s just too awesome for the little guy.

You have to file down the headers because of where I chose to place the arduino mega. This is sort of cumbersome but it’s also how I was able to keep beatseqr from being any larger than it already is. The Roland TR-808 is cool and all, but c’mon already.. that thing is huge. Plus every square inch of circuit board costs big bucks, so squeezing the arduino into a shield configuration works well enough. I’d maybe try another tactic in the future, but this kits works today. I sold Beatseqr serial number 8 based on this kit.

Ok, so: 1. you read all of the above? 2. you saw both videos and aren’t tripping out? 3. you saw that you need an arduino mega? 4. still interested? email me steve at beatseqr dot com.

case design updates

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Progress is slow but definitely still happening. Along with determining if silicone buttons are doable, I’ve been working on how I can produce cases at home instead of farming them out, or having to get up to techshop and the serious hassle that is to get time in on the laser. My CNC router has been put to hard labor and here are some of the preliminary results:

here’s an early test. many things wrong.

Here’s the results of about 3 tests later. Much closer. I’ve solved some of the hardest problems, now I just need to get a workflow going and I think I’ll be in good shape.

And then here’s the latest test of a new (to me) product from Smooth-on that has a much firmer feel than the test results we showed at Maker Faire Bay Area 2010.

And here’s how they look in this newest prototype case:

My camera (soon to be my *old* camera) somewhat exaggerates the brightness, but it’s still very readable.

I wasn’t able to de-gas the silicone, and it really really needs that to achieve the water-clear property it’s capable of, however, the bubbles serve as a very effective diffuser of the LED light from underneath. The only drag is that while I was able to get relatively few big bubbles in the casting, there were still some. Degassing would solve that, but it would be almost a thousand dollars in new machinery to do that. So I’m not sure if this is the direction I want to go in, but it’s a possibility. Testing it out has helped to at least answer the questions in my head about whether this is something we *should* do. The answer is still “Hmmmmm I dunno yet” but at least now that’s because we can try using the prototype and see how it performs. Maybe it will be an option we offer.

Announcements • Roxor 2.6

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hey there. So Apple rolled out a new version of Java 6, and it appears to have solved the problems of it not letting compiled processing apps to launch. So! this is really good news because there are a ton of now deprecated setup steps that you can replace with just making sure system update has run and you have the latest java installed.

go get it here: http://beatseqr.com/downloads/roxor2_6.app.zip

Statistics: Posted by stevecooley — Wed Jun 09, 2010 1:51 pm

v3.2 circuit boards are on order

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pending any kind of hold my board house may have for my order, I’m expecting a new small batch of boards to arrive in a couple of weeks. There are a couple of changes that I hope will translate to improvements.

1. the older style potentiometers that required headers, wiring, and holes drilled through the circuit board are now replaced by pcb-mount style potentiometers. I’ve tried really hard to get it right, so I’m hoping I did.

2. fader mounting holes are resized to be the correct size… or.. a better size. I’d made an error on the v3.1 boards in forgetting to fix the problem I saw on the v3 boards. So they should go in easy peasy now.

3. mounting holes are going to be fabricated by the board house. It took me a while to figure out that I can get them to do that for me. 🙂 The net result is that a significant amount of work will be reduced to a couple of machining operations once I get the boards. The cost to get them to do the final machining operations was far outweighed by my ability to do it on my bandsaw in no time.

4. Electrical testing. This extra board house option will further increase my confidence in the product I sell. I could test the boards myself, but I’d rather be working on more creative things. I figured it was best to leave this important step up to people who are experts at quality control.