What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Gijs’s Acid Machine pairs a synthesizer with a circular display whose rotating lines indicate the note being played. In Make’s October 14, 2008 feature, C is the reference point: the lines in the middle circle stand still for C, while other notes appear in 12 steps around it.
How does the rotating visualizer show which note is playing?
The feature describes two actions working together: an LED blinks at the frequency of the sound, while the image rotates at a set speed. The circle’s lines provide the visible note display. Make attributes the description to “Acid Machine,” without identifying the speaker by personal name or role.
For its example, the article says the middle circle’s lines stand still when the instrument plays C. Other notes are represented outward in 12 steps. The account explains the basic idea, but does not specify a rotation rate or provide enough detail to derive a complete tuning or calibration scheme. Read the Make feature.
What is the 2008 Acid Machine?
It is a synthesizer project featured by Make on October 14, 2008, with a rotating visualizer intended to show the note being played. The feature is a brief project description rather than a complete construction guide: its indexed text does not provide a full parts list, LED specification, circuit diagram, or step-by-step reconstruction instructions.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitches#1 Best Overall
- Timeless Intuitive Design - Building upon MOOG's iconic monosynths, Messenger features innovative circuits in a portable format, delivering classic analog sound with modern enhancements
- Iconic Sound, Enhanced - Designed for musicians and producers seeking a portable, powerful monosynth with the legendary MOOG sound, modern touches and intuitive knob-per-function controls
- Unique Wavefolding Oscillators - Featuring two continuously variable-shape VCOs with sync and frequency modulation capabilities, plus a sub-oscillator for added bass weight and powerful low-end
- Next-Gen Ladder Filter with Resonance Bass Compensation - Offering 4- or 2-pole low-pass, band-pass, and high-pass responses; RES BASS switch ensures full-bodied sound across the spectrum
- Full-Size Keys with Expressive Control - 32 semi-weighted full size keys with velocity and aftertouch, suitable for both performance and studio use; robust metal panel with 256 presets
Is it the same as other products called Acid Machine?
No. Several unrelated synth products use similar names. Their identities and formats differ:
| Name | What it is |
|---|---|
| Acid Machine (2008 Make feature) | A synthesizer project with a rotating note visualizer. |
| DOTEC-AUDIO DeeACID | An iPhone and iPad acid-bass synthesizer app. Apple App Store listing. |
| TT-303 Acid Machine | A browser-based TB-303 recreation. TimTechlor user guide. |
| acid8 MKII | Hardware from Twisted Electrons. Product page. |
These are useful distinctions when searching for the 2008 visualizer project; the shared wording does not make them versions of that project.
Rank #2
- Used Book in Good Condition
What is known—and not known—about rebuilding it?
The feature supports only a general component-level takeaway: the described visualizer uses an LED that blinks at the sound frequency. It does not establish the LED type, voltage, current, quantity, circuit design, optical or mechanical arrangement, or exact rotation rate. Those details should not be inferred from the short explanation; it is not enough on its own to reproduce the build reliably.
Quick Recap
Best Value
- Behringer PHARA-O MINI Mini Synthesizer for Compact Sound Design
Rank #4
- Ultra-Powerful Analog Synthesizer - Subsequent 37's control panel includes 40 knobs and 74 switches, placing a vast array of sound-design tools and sequencing options at your command
- Enhanced Playability - Featuring a 2-note paraphonic keybed that includes 37 semi-weighted keys with velocity, aftertouch, 2 envelopes, and 256 presets
- Multiple Sound Sources - 2 Variable Waveshape Oscillators, 1 Square Wave Sub Oscillator, 1 Analog Noise Generator, 1 External Input/Filter Feedback
- Complex Modulation - 2 Modulation busses, each with an LFO and programmable routing, provide deep tonal possibilities to your sound
- All the Connections You Need - MIDI In/Out/USB; 1/4" TS Audio In/Out; 1/4" TRS Headphones Out; CV/GATE Ins - Filter CV, Pitch CV, Volume CV, KB Gate
Rank #3
- THE ORIGINAL POCKET SYNTHESIZER - Used by everyone from David Bowie to The White Stripes, this musical instrument is a great addition to your collection. A great gift for experienced musicians and beginners alike!
- ICONIC SOUND - The Stylophone original pocket operator features the same iconic, analog sound as the original, first released in 1968. The Stylophone is an iconic mini synth, known for its super-fun stylus, compact design, and unique retro sound with 3 Octaves and optional vibrato effect,
- EASY TO PLAY - This electronic keyboard operated synthesizer is played by tapping and sliding the connected stylus along the touch-sensitive metal surface. Each segment on the surface plays a different note. It’s easy to play, perfect for beginners and experienced musicians!
- PORTABLE & BATTERY-POWERED - At less than 12cm wide, the Stylophone synthesizer will fit right in your coat pocket. It runs on 3 x AA batteries, and features a built-in speaker and headphone socket – so you can play it everywhere you go.
- CONNECTIVITY - Connect the Stylophone to your computer and other gear to enhance your sound & music possibilities! Use a 3.5mm Stereo cable to connect into the line input on your PC, and use your preferred software to record and manipulate your Stylophone sounds.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →
