Childrens Microscope Kits
Gakken's Otona no Kagaku Kits List
Adult Science in a boxThis is a guide to the "Adult Science" line of build-it-yourself kits published by Gakken, in Japan. The books are in Japanese only, but there's lots of nice pictures in each book, and the instructions are illustrated clearly enough that you can build the kits even if you can't read Japanese.
| News: 12/5/11 - Added review link for kit #32, the Mini Denshi Block. 11/19/11 - Added entries for Sound Gadget Series. 09/14/11 - Added links to mods for the Japanino, Edo Clock and Mini Rhino. Also added image for the upcoming mini-Denshi Block Kit. 08/06/11 - Added link to review of Rhino Kit. Gakken now advertising a new "Sound Gadget Series" of kits, including the Udar and SX-150 Mark II, starting this Fall. 06/12/11 - The Entompoter and Ornithopter are now out. Added entry for kit #32, and review of #31. -------------------------------------------------------- Gakken is a publisher of magazines, mooks (magazine books) and science kits for both children and adults. Collected here are the "Otona no Kagaku ("Adult Science") kits. I'm ignoring the children's kits largely because they're not as interesting, and it's not worth trying to buy them as imports. You can find info on them from Gakken's online shop. What I do have are the two sets of Adult Science kits - the mook series and the kit-only series. The mook series packages a really nice glossy magazine-book filled with background info, descriptions of other science experiments to try, and various stories of science history, along with the kit itself. The kit-only series contains a much higher-quality kit, usually a "premium" version of a mook kit but without the mook. Usually, the mook kits have volume numbers, but there are some exceptions (such as with the synthesizer and the aurorium). I'm currently only buying and reviewing the numbered mook series kits. The ones that don't have reviews are ones I haven't bought yet. |
| Note that many of the lower-numbered kits are out of print, which is why I don't have kits 3, 4, 5, 7 and 12 now. These are available from collectors, but at 2 to 10 times the original cover price. New kits come out roughly once every 3 months. The mook kits are designed to be customized and otherwise modded. The mooks often have several pages of customizations as suggested and implemented by the authors and editors. Not all of the kits are worth modding, though, so I'll only put in links to mods that I've done myself. Note that the obvious first mod to any kit that runs on batteries is to add a mono headphone jack to connect up an external DC power supply. - Curtis Visit the Otona no Kagaku Ranking Chart here. |
Numbered Mook Kits
Sound Gadget Series
This is a new series of kits announced around September, 2011, and building on the popularity of the SX-150 mini-synth, and the Theremin. These are slightly higher-end musical toys intended to introduce users to the basics. There's no mook, and probably little to no assembly required. So, in this sense these are not "kits". However, I haven't purchased the Mark-II yet, so I can't guarantee this.
SX-150 Mark IIThis is an upgrade to the original SX-150, with the addition of VCF and LFO controls, and a Resonance control instead of just the switch. | 7350 | 10/30/11 | SX-150 |
| Udar The Udar is a very strange synth that is played kind of like how you solve the Rubik's cube. Gakken announced the Udar a year ago and it's still in development. No tentative release date or price yet. | ----- | ----- | ----- |
Unnumbered Mook Kits
The mooks for these kits only cover the history of that specific type of kit (that is, the vacuum tube variometer radio mook talks about vacuum tubes, and their use in radios), the theory of operation, and gives instructions for building the kit. The radio and synth mooks also offer suggestions for simple mods.
HTML clipboard SX-150 AnalogSynthesizer The synth consists of a pre-assembled circuit board and speaker, the case, knobs, stylus and resistive strip. Takes between 15-20 minutes to assemble. Uses 4 AA batteries. | 3360 | 7/30/08 | SX-150 Review |
AurorariumThe aurorarium kit consists of a pre-assembled base and LED stand, a fogged plastic cone, and some reflective disks. Light from the LED bounces off the slowly spinning disk, and is diffused by the plastic cone. The three LEDs cycle between red, green, blue and various combinations of each as kind of an updated lava lamp. Takes no more than 10 minutes to assemble. Uses 4 AA batteries. This is not actually one of the Otona no Kagaku kits, as it's part of the Kagaku no Tamago (Science Egg) children's series, but it's always included in with the adult kits in the bookstores. | 2200 | Aurorium Review | |
Hand-made Speaker | 2940 | Speaker | |
Variometer 1 Vacuum Tube AM RadioUnlike the other kits in the unnumbered mook series, this one actually requires some work to build. There's the case, antenna forms, vacuum tube, battery casings, and wire to make the antenna coils. Maybe 15 parts total, and with the hand-winding of the coils can take 60-90 minutes to assemble. Uses one C cell, and three 9 volt batteries. One suggested mod by Gakken is to turn it into a wireless telegraph. The audio signal is weak and there's no volume control, so you'll want to add an audio jack to a powered external speaker. | 3250 | 5/26/09 | Radio Review |
Kit-Only
| Title | Cover Price | Date Published | Magazine | |
| Premium Theremin | 9, 975 | 12/18/08 | Magazine |
| 8mm Film Projector | 7, 980 | Magazine | |
| Two Edo-Era Tea Carrying Wind-up Dolls | 6, 195 8, 190 | Magazine English Instructions | |
| Arrow Shooting Boy Wind-Up Doll | 10, 290 | Magazine English Instructions | |
| Somersaulting Wind-Up Doll | 5, 981 | Magazine English Instructions | |
![]() | Premium Gramophone | 7, 980 | Magazine | |
![]() | Vacuum Tube Amp | 12, 390 | Magazine | |
| Crystal Radio | 5, 775 | Magazine | |
| Vacuum Tube Radio, Ver. 1 | 8, 800 | Magazine | |
| Vacuum Tube Radio, Ver. 2 | 9, 801 | Magazine | |
| Edison-Style Cup Phonograph | 3, 045 | Magazine English Instructions | |
| New Edison-Style Cup Phonograph | 2, 981 | Magazine | |
| Berliner-Style Gramophone | 4, 095 | Magazine English Instructions | |
I got this kit as a present for a friend. It's cool in its simplicity. Basically, it's a pair of motors connected to a battery through two photoresistors. Light from an LED bounces off the disk and hits the photoresistors, changing the motor speeds. As the robot advances, the disk rotates and the black ink marks represent the "program". The "program" then lets you trace different patterns with the robot's movement. | Programmable Robot | 3, 990 | Magazine English Instructions | |
| Volta-style Carbon Battery Kit | 3045 | Magazine | |
| Marconi-style Electric Wave Car | 3360 | Magazine | |
| Mechanical Crab | 5, 981 | Magazine English Instructions | |
| Mechanical Inchworm | 5, 981 | Magazine English Instructions | |
| Mechanical Centipede | 7, 980 | Magazine English Instructions | |
| Stirling Engine | 9, 801 | Magazine English Instructions | |
![]() | Vacuum Engine | 15, 540 | Magazine |
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