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4 Forrest Mims Kits
| Jameco Part no. 2158055 | |
|---|---|
| Manufacturer | JAMECO KITPRO |
| Manufacturer no. | FORREST MIMS KITS |
| RoHS compliant | |
| NCNR (Non-Cancelable, Non Returnable) | |
| web exclusive | |
- No datasheet available. Please review the tabs below for product specifications.
4 Forrest Mims Kits
Includes:Toy Organ
The Toy Organ project is a music maker based on a simple 555 timer circuit from Forrest's well known Engineer's Mini Notebook, Volume 1: Timer, Op Amp & Optoelectronic Circuits & Projects. With the addition of a resistor, some capacitors and some buttons, you can generate several different tones. Add on a couple potentiometers and you can control the volume and the pitch of a note. Even more, when you press several buttons at the same time, another unique tone is generated.
Vibration sensor kit
The circuit shown here doesn't use any moving parts to detect vibration. Rather, a piezo speaker element is used as a sensitive vibration sensor. Curious how it works? The piezo speaker is connected to the input of an op amp operated as a comparator. This operation is achieved by eliminating the usual feedback resistor between the output (pin 6) and the inverting input (pin 2). In operation, tiny vibrations cause the piezo element to generate a small voltage. The LED glows when the voltage exceeds that applied to pin 3 of the op amp by sensitivity control R2.
Atari Punk console
The Atari Punk Console has become the popular name for a simple circuit that I first described as a "Sound Synthesizer" in Engineer's Notebook: Integrated Circuit Applications (1980) and then a "Stepped Tone Generator" in Engineer's Mini-Notebook: 555 Circuits (1984). The circuit creates a sequence of tones whose frequencies vary in distinct steps as a potentiometer is adjusted. Some in the electronic music community began experimenting with the circuit, and it is eventually labeled the Atari Punk Console by Kaustic Machines. "Atari Punk Console" yields 15,100 hits in a Google search. The circuit even has its own Wikipedia page. Even older than the Atari Punk Console is the integrated circuit that makes it possible, the venerable 555 timer designed by Hans R. Camenzind for Signetics. The 555 was introduced in 1972 and continues to be one of the most popular integrated circuits ever designed. Visit the Jameco Workshop page for complete build instructions.
Fridge alarm
Have a food burglar in your midst, or just trying to keep the midnight snackers at bay? You need a fridge alarm. This handy little gadget sits quietly in the fridge until someone opens the door. When the door opens, it turns on the light inside the fridge. The light triggers the photocell on the alarm causing it to emit a shrill tone. It may not stop the perpetrator, but it will make them think twice about opening the fridge door again.
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