3 beatie bop drum synths

YouTube Uploaded by MrAcidMachine on Apr 25, 2011

MrAcidMachine on eBay

Update:

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Beatie Bop Percussion Synthesizer "Chrome" Face

via this auction

"A handmade and unique Analog Drum Synth and Optical Theremin.
Create cool spacey sounds, bangin' bass drums, ethereal spookiness and more.
It can be triggered by the onboard drum pad, voltage input, or audio input.

This one is a new look to the original Beatie Bop, but same funky analog sounds!!
Now in a slightly smaller, lightweight enclosure."

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Beatie Bop Percussion Synthesizer analog drum synth

via this auction

"A handmade and unique Analog Drum Synth and Optical Theremin. Create cool spacey sounds, bangin' bass drums, ethereal spookiness and more. It can be triggered by the onboard drum pad, voltage input, or audio input.

This one is a new look to the original Beatie Bop, but same funky analog sounds!! Now in a slightly smaller, lightweight enclosure. Enjoy!"

Video links at the auction and the Mr.AcidMachine label below.

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mrs.bassdrum

YouTube Uploaded by MrAcidMachine on Apr 4, 2011
MrAcidMachine on eBay
"The bassdrum sound is entirely coming from the Mrs.Bassdrum Box.
The other drum sounds are samples of the TR-808 snare and hihat on the computer. Mrs.Bassdrum is sequenced with short click sounds programmed in Ableton Live coming out the headphone jack on a laptop going into the trigger input on Mrs.Bassdrum. Massive bass is the result !! Mrs.Bassdrum is based on the TR-808 bassdrum circuit, but is powered by a 9 volt adapter or 9 volt battery. Enjoy!! Coming to ebay soon..."

via this auction
"There are 6 knobs:
Sens. (trigger sensitivity)
Tune (pitch control)
Level (volume control)
Decay (length of sound) *twice as long as original 808*
Env (Pitch envelope)
Tone (level of initial click sound)
There is also a switch to turn the Env. to original TR-808 setting.
This makes it easy to get the original 808 sound.
Turn the tune knob near the center for the original pitch.
Then you are off to 808 style heaven.
But you can get much much lower (and higher!)
Mrs.BassDrum is powered by a 9 volt adapter or 9 volt battery.
Triggered by voltage in, audio in, or tap the drum pad.
Fun and scary speaker shuffling!!
Watch your levels!!!"

Mr.SnareDrum analog drum synth based on Roland TR-808

via this auction
video previously posted

"Mr.SnareDrum Analog Snare Drum Synthesizer. A handmade and unique Analog Snare Drum Synth. Create authentic sounding TR-808 snare sounds, start a live electro band or hiphop group. It can be triggered by the onboard drum pad, voltage input, or audio input. The input is even velocity sensitive, so you can get the accented sound when you hit it harder. Many different sounds are possible just by hitting it softer or harder (just like a real snare drum!), from a tom drum or rimshot type sound to a regular nice snare to a hard crack that will make your eyes blink (in a nice way!). Turn the 9 knobs to your liking to create a variety of tom, rimshot, click, pop, snare, noise, clap, and snap.

9 KNOBS: SENS (Trigger Sensitivity), SNAPPY, NOISE, TUNE A, TUNE B, TONE, FILTER, DECAY, and VOLUME.
JACKS: Trigger Input (can be voltage or audio) and Audio Output.

Powered on 9 volts."

mr.snare+beatiebop

YouTube Uploaded by MrAcidMachine on Mar 21, 2011
mracidmachine on eBay - added to Makers section on the right with RSS feed.
"A drum beat using just the Mr.SnareDrum and BeatieBop Analog Drum Synths. I programmed some stereo clicks of different volumes in Ableton Live and sent it out to the trigger inputs on the Drum Synths with a Y-Cable from a laptop headphone jack. Easy way to sequence these analog drums since they can be triggered by voltage OR audio.
Coming to ebay soon..."

Beatie Bob via this auction

"A handmade and unique Analog Drum Synth and Optical Theremin. Create cool spacey sounds, bangin' bass drums, ethereal spookiness and more. It can be triggered by the onboard drum pad, voltage input, or audio input.

KNOBS: SENS (Trigger Sensitivity), DECAY, PITCH, SWEEP (variable from sweeping up to sweeping down),
LFO MOD RATE, LFO MOD DEPTH, and VOL. (Initial Volume).

SWITCHES: Oscillator Shape (Square or Triangle), MOD Shape (Square or Triangle), LFO MOD Range (High/Low Speed),
Light Sensor On/Off (to control the Pitch with Light), "L" for LFO to Trigger the Drum at the LFO RATE.

JACKS: Trigger Input (can be voltage or audio), "P" for Pitch (Control Voltage or Expression Pedal Input), "V" for Volume (Control Voltage or Expression Pedal Input, and Audio Output.

Powered on a 9 volt battery or 9v DC adapter."

Beatie Bop Percussion Synthesizer analog drum synth

via this auction

videos posted here
"Beatie Bop Percussion Synthesizer
Analog Drum Synth and Optical Theremin
Infinitely Wild Sounds with a Unique Look.
It has a rubber drum pad for triggering the sound.
It has an Light Sensor for changing the pitch.
It has CV inputs for Pitch, Volume, and Trigger.
Possibilities are endless. Fun is endless.

Knobs for
Trigger Sensitivity, Decay, Pitch, Sweep, Mod Rate, Mod Depth, and Initial Volume.

Switches for
oscillator waveshape (triangle or square), mod waveshape (triangle or square), mod range (low or high),
Light Sensor (on/off), and "L" LFO trigger (to trigger the drum by the mod rate)

Jacks for
Trigger Input
Volume CV Input (can be used with expression pedal or voltage in)
Pitch CV Input (can be used with expression pedal or voltage in)
Audio Output

Funky rhythms can occur if a cable is plugged from the Volume In Jack to the Trigger In Jack.
It somehow re-triggers the drum in an infinite loop.

Takes a 9v Battery or standard 9vDC adapter.
Metal Case. Silkscreened graphics."

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beatie volume with doggie accompaniment

YouTube Uploaded by MrAcidMachine on Mar 10, 2011

MrAcidMachine on eBay
"Beatie Bop Analog Percussion Synthesizer.
It is also an optical theremin.
It has input jacks for trigger, pitch cv, and volume cv.
The volume and pitch inputs can be used with an expression pedal."

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It was a bassline valentine. [Custom Keytar TB-303]

YouTube via MrAcidMachine | February 15, 2011 | via this auction
MrAcidMachine on eBay
"A new Roland TB-303 Bassline Clone in Keyboard form, complete with carry bag, guitar strap, and batteries. She was my acid techno love for Valentine's day, but now I must let her go. Fully analog ciruitry. Jacks for CV IN, GATE IN, SLIDE IN, ACCENT IN, AUDIO IN(TO THE FILTER) AND AUDIO OUT. Plus there is a built-in speaker."

Update:

acidkeyzpreview2

MrAcidMachine | February 15, 2011 |

"Keyboard version of a Roland TB-303 Bassline Analog Synth.
DIY Clone of analog circuitry, plus an LFO for modulating the filter and triggering the gate. Too much fun to play!"

accent and slide

MrAcidMachine | February 16, 2011 |

"Just testing various combinations of the accent and slide switches on the ACID BASSLINE KEYTAR!! ON EBAY NOW! WOW! HOW NOW BROWN COW!"

Update:
Details and pics:
"This is a one-of-a-kind custom analog synth. It is a clone of the Roland TB-303 Bassline sound generating circuits plus a keyboard for playing enjoyment and a "TEMPO" LFO for triggering the gate and modulating the filter. Buttons and switches for turning on/off the accent and slide. Switches for Gate-On, TEMPO to Gate, SPEAKER ON/OFF, POWER ON/OFF and WAVEFORM SAW/SQUARE. Knobs for TEMPO, TUNING, CUT OFF FREQ, RESONANCE, ENV MOD, DECAY, ACCENT, TEMPO MOD, and VOLUME. 1/4 inch jacks for AUDIO IN (to filter), CV IN, GATE IN, ACCENT IN, SLIDE IN, and AUDIO OUTPUT. It takes a 9V DC adapter or 6 AA batteries. It has a built-in speaker. Sounds great plugged into an amplifier! Excellent through distortion pedals too! Comes with handmade carry bag and a guitar strap. batteries included."

Update: some more info: "The case was a Casio SA-20 keyboard I found at Goodwill. I modified the headphone/speaker circuit board to be louder/better sounding. Then I hand-soldered prototype boards to create the audio generating circuits of the TB-303. I used some different parts than the original, increased the resonance so it can self-oscillate, added an LFO to trigger the Gate and modulate the filter, and added a circuit to make the keyboard work."

This Boomin Can Self-Oscillate!

YouTube via MrAcidMachine | November 04, 2010

"A Health Club Boomin drum box based on the Roland TR-808 kick drum with mods to self-oscillate when the decay is turned all the way up! Speaker damaging bass, clicks, and blips."

SH-101 Acid Housey

YouTube via MrAcidMachine — May 04, 2010 — Demo for this synth on sale now on Craigslist in Seattle.
MrAcidMachine on eBay