Category Archives: Kit Documentation

DOD Guitar Pedal Replacement Battery Cover For Sale Now

IMG_0443.JPGHere at GetLoFi we have been working in some projects that are not exactly circuit bent but were certainly inspired by circuit bending. One such project that has been in the works for close to a year now is a replacement battery cover for DOD vintage guitar effects pedals. The need for this projects arose from having a personal collection of various DOD pedals which had 1 thing in common, they were missing the 9 volt battery cover. Because they came from as-is auctions on eBay and in most cases cost me less than $20 shipped, the battery cover was certainly missing. So what to do? I certainly wanted to get most value out of the pedals from resale however an alternative replacement cover did not exist yet. I was lucky enough to strike a friendship with a youtube user who had similar manufacturing and wild idea interests as me and eventually learned of his forays into injections molding, this was a perfect project. At a glance these lids seem like a strait forward piece of plastic however it was not until about 4 iterations of the aluminum mold that we were able to dial in size and complexity of all the parts involved.

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At last however the project is virtually finished and the molds are sitting safely on the shelf awaiting a next batch. So order up and make us proud. Head over to dodbatterycover.com and getlofi.com/shop see and purchase fruits of our labors.

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As you can see several parts were tried out until the final design was born.

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Various covers through out the process, 5 different variations were made and then later tuned up.

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There was even one with GetLoFi logo on it, but I decided that if these were going to be in stores perhaps not the best idea to plaster my brand all over it.

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The final Hinge Style cover can also be purchased as a kit and assembled with nothing more than a few drops of Acetone and a Q-Tip. My first Instructable is located right here: http://www.instructables.com/id/How-To-Assemble-DOD-Guitar-Pedal-Battery-Cover-Rep/

 

 

How to add Getlofi LTC1799 to Casio Sk-1

by Spunkytoofers

I’ve gotten several requests on how to hook up the Casio Sk-1 with a Getlofi1799 Oscillator so I’ve quickly drawn up a diagram for hookups. According to other sources the clock input can be directly injected without cutting the trace. That may be possible but there are bootup problems if the clock isn’t at it’s original setting so you may need to add a switch regardless. The note about the optional 500 ohm resistor is only if you notice your sk-1 is now out of tune for wiring to the clock lines. this should drop pitch to a range where you can fine tune the keyboard back to A=440.  Access to the fine tuning is available thru the bottom plate of the sk-1.  Click thru on the pictures to get an exploded view of the diagram.

GetLoFi 4017 Sequencer Kit Implementation

The 4017 Sequencer Kit has been available for quite some time, however the documentation has been rather lacking. Aside from that fact that it makes a great 8 step trigger circuit  we have not even tried it as a Control Voltage (CV) source until now.

Go get started the Sequencer circuit board needs 3 Input connections. Ground ( Black ), Positive Voltage ( Red ), and Clock Input (Blue ).

The Tempo to advance one step in the sequence is provided by a 555 Timer Module. Positive Voltage and Ground connections are shared.

The Simplest circuit demonstrating the most basic operation is an LED used to preview or indicate the steps in the sequence.  Negative side of the LED must be connected to the 4017 board Ground and the Output pad will serve as a source for Positive Voltage. A resistor is needed to limit the current, typically anything between 100 – 1,000 Ohm will do fine. When the step is set to High at the specific pad the positive voltage is sent out lighting up the LED. Note that this is the basis for using the sequencer as a triggering device for other circuits.

Continued…