Beat707 XXL LE

This is the Beat707 XXL LE - Limited Edition - no LCD and no SD Card, less components, minimal interface.



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Beat707 XXL LE has only MIDI output, no LCD and no SD Card. Uses the ATmega328 EEPROM to store data. This unit can handle 8 drum tracks, 2 accent tracks and 6 patterns. Each pattern is actually a combi of 4 x 16 steps plus extra double steps. So in total we have 128 steps per pattern. We have setup a very easy way to edit all those steps. We have steps A, B, C, D for each set of 16 steps. Also, you can set a set to "double-step" and it will blink instead of light-up. All options are set into the program itself which can be altered and uploaded using the Arduino IDE.

- Uses only Two ATmega328 Chips and basic components.
- Work with a 500mA 5V power supply.
- Can use 4 pin mic left and right connectors, instead of 6 pin mic connectors.
- Settings such as track drum notes and midi channels are set in code, while BPM and Steps# can be changed in the interface itself and is saved along the other data into the internal EEPROM.
- Multiple units can be side-chained.

Beat707 XXL Pre-Release Video

Beat707 XXL Details

Welcome to Beat707 XXL - Extra Extra Large Version


Beat707 has evolved in the past 4 years of existence. We now have a totally new unit that is big, bold and better than ever!


The new PCB is now multipurpose, so you can add more options without having to use extra devices. We have also created an acrylic case that holds everything in place in a nice way. Now, let's talk about how Beat707 XXL works.


The idea behind this new product is to be open, and also visually great. So we used ultra bright LEDs to really make it shine. Plus, Bea707 XXL is all based on the famous ATmega328 chip, the same used on the popular Arduino UNO. This makes the unit software open-source and very easy to tweak and hack. We have used multiple ATmega328 chips to keep things running in parallel, and avoided the build up of different ICs to accommodate multiple LEDs and Touch Sensors. Why we did like this? Simple, to keep things Minimal, but not Simple.


Each unit can side-chain several units, feeding serial information, audio and power. This keep your setup clean, by using only one cable from unit to unit, and the last unit can output the audio signal. You can also get separated audio signals from each unit that has a SND Generator, or, as mentioned, side-chain it to the last unit.


We have also provided separated MIDI Components, so you can make it MIDI compatible if required. MIDI Input and Output cables are attached into the left connector of the Master unit.


Each unit can have a SND Generator chip, which is shared by all units. So even if you have only 2 SND Generators, but 4 units, all the units can send notes to those 2 SND Generators, regardless of where they are in the chain. Slave units can even have two SND Generators, one can also use the SD Card.


We used capacitive touch buttons, instead of regular buttons, to make this easier to use, and also have that neat touch feeling. Everything is kept simple, so it is easier to understand, including the provided code.


The Beat707 XXL has a total of 16 large squares, each with its own ultra bright LED. But we also added 4 extra LEDs that can be used to either pulse on the beat or when the unit has sent notes out. Since the software handles that, we could do whatever we want with the extra LEDs. We also have 16 touch sensors for each square, plus 2 extra sensors that acts as an interface navigator, depending on what software you are using, or the controller settings.


The current software handles 16 steps in a 4 pattern style. Plus, double steps, so in the end you have 128 steps. The Master unit SD Card can stream patterns while in song mode, so you don't need to worry about MAX number of songs and patterns. You also have multiple choices of SND Generators: 6 voice sample player, 8 voice pulse-generator and SD Card no-latency looped (or not) sample playback (not available for the Master unit). And soon many other options.


In the following sections of this manual we will explain, in details, what each IC does, and how to build your own Beat707 XXL from the kit you have purchased from us.


To start up, we will be releasing the information about the first Beat707 XXL device, which we call Beat707 XXL LE, as in Limited Edition. This first device uses less components, has no LCD and SD Card, and only sends MIDI information. This is a great way to start, as you can always add the other components later and make this a full Beat707 XXL Master Unit.


The LE version uses the ATmega328 EEPROM to store the data and can handle up to 8 drum tracks, 2 accent tracks and 6 patterns. All options are set into the program itself which can be altered and uploaded using the Arduino IDE. We will talk more about what each device does later on. Remember, the PCB for all versions is the same. So you can always upgrade your device with extra components later on.


Enjoy your new experience!

Types of Beat707 Units

Note: currently only the software for the LE version is finished (we should release the details around November 22). We are still working on the software for the Full Master & Slave Units. ETA: around December 18


  • LE – Limited Edition – has only MIDI output, no LCD and no SD Card. Uses the ATmega328 EEPROM to store data. This unit can handle 8 drum tracks, 2 accent tracks and 6 patterns. Each pattern is actually a combi of 4 x 16 steps plus extra double steps. So in total we have 128 steps per pattern. We have setup a very easy way to edit all those steps. We have steps A, B, C, D for each set of 16 steps. Also, you can set a set to "double-step" and it will blink instead of light-up. All options are set into the program itself which can be altered and uploaded using the Arduino IDE.


    • Uses only Two ATmega328 Chips and basic components.

    • Work with a 500mA 5V power supply.

    • Can use 4 pin mic left and right connectors, instead of 6 pin mic connectors.

    • Settings such as track drum notes and midi channels are set in code, while BPM and Steps# can be changed in the interface itself and is saved along the other data into the internal EEPROM.

    • Multiple units can be side-chained.




  • Full Master Unit – with LCD and SD Card, nearly unlimited data storage for Songs and Patterns. Can handle MIDI Input and Output, or use one of our Software SND Generators.


    • Uses at least Three ATmega328 Chips, one extra for either MIDI In/Out or SND Generator.

    • SD Card support with the required board attached.

    • Each unit that is side chained will require an extra 500mA of power, so 4 units will need a 2A 5V power supply attached to the Master Unit.






  • Slave Unit – can be side-chained into a Full Master Unit, and has the option to host two SNG Generators.


    • The number of components will depend on what you want to add to the unit. Since the PCB is multipurpose, it can be as simple as Two ATmega328 chips for regular usage, or add more ATmega328 chips, up to 2 extras, for 2 SND Generators.

Beat707 XXL PCB Details



Latest Updates

Beat707 XXL Ready

Check the Purchase page for details

The LE version software is also done,
with the full version ETA for December 18

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