Great News, I'm BACK, and with a new project for the great Beat707 MIDI Drum Sequencer, fully Arduino compatible open-source.
What I will be working next is the new Beat707 2.0 set of PCBs, I will have more info about it soon. But the idea is to make the PCB with headers for buttons and leds, so the unit can have custom design. Let's say you want a 4 x 4 button + led grid, or a 1 x 16 grid instead. You can use the same boards. This way you can make a regular sized unit, or a big one like my latest XXL project was. I will no longer use touch sensitive buttons. Watch the videos below on how the previous Beat707 Drum Sequencers were, which were a great success already. The next unit will be fully open-source.
More details on the Beat707 2.0 PCB Boards Below, and also the specs of the hardware + software of the MIDI Drum Sequencer, fully Arduino Compatible. You can check, below, the old Beat707 XXL BIG PCB Board, as the new board will be based on it, but much smaller, making it possible to be used on small and large setups. I will also release some Acrylic cases designs later on.
But for all this to happen I need to collect some contributions in order to keep working on this and release new videos and software on how to create your own device. All in all I'm trying to collect $ 2,000.00 USD (specially for the PCB industrial upfront fees), which should be ok to do. In return any contribution will get you a free copy of Wusik 4000, a Virtual Modular Software Plugin for Windows and MAC, see details below.
Contribute to the Project Today
ETA for delivery on the boards, around June 1st
(hoping for much sooner than that)
Get a FREE Virtual Modular Synth from Wusik Dot Com (*)
Contributions so far: $ 1,264.00 / 2,000.00
|$ 9 USD
|Free Wusik Software
|$ 59 USD
PCB Board Only
|$ 99 USD
Fully Populated PCB Board
(*) FREE Software from Wusik.com
(request your free software after you have placed and paid for your order)
(downloadable format only, we do not ship this with your order, but rather email you a download url)
Wusik 4000 (Windows and MAC - 32/64 bits) Modular Sampler & Synthesizer
If you want to browse all previous Arduino sources, visit the following link.
The Specs for the Beat707 2.0 is a bit open now, as I plan on adding as much options possible using the "power" of the ATmega328 chip. The previous software had:
- 14 Drum Tracks (on/off steps)
- 2 Note Tracks (0~127 note number, off and glide)
- 2 Accent Tracks
- 32 x 2 steps for each Drum Track
Since the idea is to add the SD Card to replace both external EEPROM and FLASH, the number of patterns per song could be 127.
The new boards will come with the same design as the Beat707 XXL had, you can see a video of that board below. It comes with Arduino compatible ATmegas, so you don't need an actual arduino, just an USB to FTDI cable and you are good to go. After the board is fully programmed no computer is required for using it live.
- ATmega328 IC #1 (input and sd card)
10 pins = 5 x 5 button matrix = 25 buttons (16 steps + 9 navigation: up, down, left, right, ok, play, stop, shift, funct)
02 pins = 2IC Communication with the master IC
04 pins = SPI = SD Card (MISO, MOSI, SCLK, SS)
02 pins = Secondary Midi Input and Output (optional, for merging two inputs and having two outputs)
Total of 18 pins = 2 Free pins
Maybe one extra pin for external led flash (depending on the software settings used)
Another extra pin for enabling the midi in/outs so when flashing with the FTDI no need to setup jumpers. When programing IC #2 just hold IC #1 reset them. Uses IC SN74HC125 to enable/disable the in/out serial lines with a single pin.
If using those two pins = no free pins
- ATmega328 IC #2 (the sequencer and leds)
16 pins = 16 LEDs, using the ULN2803 Driver
02 pins = 2IC Communication with the slace IC and also the LCD Display
02 pins = Midi Input and Output
Total of 20 pins (no free pins)
Advantage of this setup. The SD Card support is done on the first IC, which takes extra memory and flash space. Leaving more room on the main sequencing IC #2. Also, menu interface info could be stored on the SD Card to save flash memory on IC #2.
Midi Input requires very few components, so we add space on the board anyway for the 4N35, diode and 3 resistors per input.