Felipe | May 25, 2017

Received in a very good shape!

For Nutube amp kit, a vacuum tube in new century REV2

Yesterday received the item after 1.5 months traveling, I was little afraid about the NUtube that could be broken but everything came very well packed, clear instructions, quality components on small zipped bags, very nice PCB like a Pro, NUtube and IC SO8 with static sensitive spounges and the strauberry of the cake was a very nice Origami gift . Thanks!

Response from microwavemont | May 27, 2017

Thank you so much for ordering from opposite point on the globe! I am very happy to hear your satisfaction! Please enjoy wonderful Nutube sound! Thank you again!

Christoph | May 21, 2017

Sounds so good

For Nutube amp kit, a vacuum tube in new century REV2

Works perfectly and also sounds really beautiful. Thanks for this great product. It was really easy to build. The on/off-switch was missing in my kit but I had one in my personal stock, so no big issue.

Response from microwavemont | May 22, 2017

Thank you so much for wonderful review and really so sorry for no switch shipment. I really appreciate your generous consideration for the missing parts and I hope "Nutube" will play wonderful sound beside you. Thank you again!

Dave | May 9, 2017

Excellent very happy

For ESP32 dev board /w Full Color OLED REV.3

Hi all,
i just wanted to let people know i purchased this devise.
It arrived very fast.
The product was exactly what i had ordered.
The product arrived in excellent condition.
The product worked immediately without any issues.
I would highly recommend this company to buy from and i plan on buying from them again also.
Thanks
Regards
Dave K.

Response from microwavemont | May 9, 2017

Thank you for reviewing! I am very happy to read your satisfaction! Color OLED is indeed very interesting and will have lots of possible interesting application! Please enjoy! Thank you!

Richard | April 4, 2017

Product works as expected. Display is a nice feature

For ESP32 dev board with OLED and LiPo charger circuit

I give 3 stars on the documentation, not due to the seller,
just the ESP32 is new and not well documented.

I am developing on it using the Arduino software drivers.

One note, The lipo battery must be installed and the switch on for the ESP32 to receive power.
It will be recognized by the USB, but will not upload until the power switch is turned on.
The usb connector does not power the ESP32.

Response from microwavemont | May 9, 2017

Hello and thank you for review!! I am very happy to hear your satisfaction. As commented, SW should be turn-on for ESP32 activation and it is not written in the explanation. I would like to add this instruction for the item! Thank you!!

Peter Junyeop | March 31, 2017

this sweet sound Nutube is the future.

For Nutube amp kit, a vacuum tube in new century REV2

This headphone amp kit arrived nicely. Well packaged, good parts and love the schematic drawing.
(hope to see where to check voltage points)
easy to make. I finished in less than 1 hour.
Hooked up with headphone, first impression was "hmm...high is little too much" but after a week of testing, the sound becomes unreal.

To describe the sound in one word, i can say"PRETTY". If you are tube lovers, it sounds more like 300b. Not like macho KT88. I hook it up as a preamp with Mcintosh275(KT88) tube amp, it's well matched and i am super happy with the nutube.
In the future, i would like to make preamp and go all the way to higher voltage to find out the nutube's true potential.

Thanks to Toshiro that giving me a opportunity to try out the kit.
Highly recommend.
(how can I upload pictures here?? lol)

Peter

Response from microwavemont | March 31, 2017

It is a ultra honor for the Nutube headphone amplifier to be connected to Mcintosh !!!!! I am really happy to receive your wonderful report, especially comparing very famous 300B. Thank you so much!!

Oleksandr | Feb. 2, 2017

Pleasant sound.

For Nutube based 15Wx2 amplifier KIT with Class-D amp

Easy to built kit.
And it sounded very pleasant with "tube-overtones".
It need a very sensitive and small loudspeakers (3" ... 4").
Thanks Toshi for fast shipping and communication!

Response from microwavemont | Feb. 3, 2017

I am very happy to read your satisfaction. I am also a fan of Nutube's pleasant vacuum tube sound. Thank you!!!

Kamaldeep | Jan. 31, 2017

It is really a Pretty Happy Amplifier

For Pretty Happy amplifier (PHAP) , class-D with OLED

I must say it is unique amplifier I ever came across. Beautiful small design with a cute display. Assembly is super easy. Well documented and supported. This is a must buy. Made in Japan.

Response from microwavemont | Feb. 3, 2017

Thank you for great review report! I hope tiny "oscilloscope" will provide pleasant listening time!! Thank you so much!

Kamaldeep | Jan. 31, 2017

Another Japanese Masterpiece

For ULTRA, a successor of SDuino

I am using it with a stepper motor controller. Very easy to use, well documented, unique and Made in Japan.

Response from microwavemont | Feb. 3, 2017

Really happy to see your great application!! Thank you!!

Kamaldeep | Jan. 31, 2017

One of its kind

For VHDL training board

This FPGA traning board is one of its kind, so easy to use and the price is at rock bottom. I am buying two more. I must say Japanese workmanship is one of its kind.

Response from microwavemont | Feb. 3, 2017

I am very happy to read your satisfaction. The CPLD in this kit is not gigantic but we can learn what is "hardware defined by software" Thank you so much!!

Constantine | Jan. 11, 2017

Great new tech

For Nutube amp kit, a vacuum tube in new century REV2

After a lot of readings about the Nutube I decided to give it a try. After a short waiting, ( surprisingly very fast delivery from Japan) today I could finally assembled it . Power up , a few adjustment and a big surprise to my ears. Of course , need to listen a few days more to give ears time to get used with the sound. But at first shot, the sound is very open, a good bass stage , the mid stage not very harsh and the highs clears. Of course depends a lot of the quality of the recordings.
Good quality components , the PCB is very good manufactured , schematic diagram easy and clear to read.
Thank you for a great experience and best regards from UK.

Response from microwavemont | Jan. 13, 2017

Thank you so much for very nice review. I am also a fan of Nutube and I love its warm sound. In my all Nutube related kit, MUSES8920, which is also very famous for its good sound and it surely support sound quality. Again Thank you and I am very happy to see your satisfaction!!

Joseph | Jan. 5, 2017

Excellent Unit

For Nutube amp kit, a vacuum tube in new century REV2

The designer of this unit has done well creating a preamp with such new "tube" tech and the instructions to it build are very easy to follow even for a novice.

Response from microwavemont | Jan. 10, 2017

I am very happy to see your nice review comment! Indeed I myself enjoy good and pleasant sound of Nutube and I hope you will enjoy it!! Thank you!

Shailendra | Dec. 10, 2016

DSP AM-FM-SW radio

For DSP radio version 3

Product is well built, but the rotary encoder used is a let down as the frequency gets reset if not rotated properly. There is a play in the shaft of the encoder which makes it shift sideways when rotated leading to unintentional resetting of frequency. It is very frustrating to retune the band to the desired frequency. This is true even if used with the tuning knob which is part of the supplied accessory.
I am also unable to tune into any MW and SW stations (used a 20ft long wire as antenna hanging outside the window). This may be because I am using supply from the phone charger which is generating a lot of noise as I do not have a male pin for the battery input (would have been nice if it had been included in the package).

Response from microwavemont | Dec. 10, 2016

Thank you for review!
Cell phone charger with USB terminal and mobile battery with USB terminal usage is out of my design supposition. LiPo (3.7V single cell ) battery is one of a member in order to work this radio correctly. Please get appropriate battery for operation. The shape of Lipo can be found, for example https://www.adafruit.com/products/1904 the silver one is Lipo. Thank you.

Justin | Nov. 30, 2016

Awesome compact board, great service

For ZERO Color 2

Thanks for all of the support and quick answers to my questions.

The board is great and does exactly what it should.

Here are some examples for people to check out: https://www.youtube.com/watch?v=pbyQHYjSf84

Original review below...
---

I have order the Zero Color 2 and will be using it to make a car gauge. I'd like to design a 3d printed enclosure while I wait for the package to travel half way around the world.

Could you please post the rough dimensions of the board and the display and where the display sits on the board?

Thanks

Response from microwavemont | Dec. 1, 2016

Thank you for ordering! I will upload one figure with dimension on this weekend on the top of item showing page at tindie. Please give me some time! Thank you!

Christopher | Nov. 24, 2016

Amp works great, looks great, easy to assemble.

For Nutube amp kit, a vacuum tube in new century REV2

I received one of the first-run kits about a month ago, but wasn't able to assemble it until now. Everything was well packaged and had both board layout and schematic documentation included. I needed to reference the hackaday.io project page and ask a couple questions regarding some part value differences I thought I found, but overall I had little trouble with assembly. Initially with the trimpots set at 50%, I heard some startup and operating noise, particularly with no audio input. Once I set the grid voltages correctly (mine are at about 2.25v) no distortion and little noise remain (only about <1s of startup noise). I'm using a 6xAA (1.5v) pack for power, and has a current draw between 45.5mA to 46.1mA when using my Grado SR80 headphones. I'm planning on installing this in a transparent enclosure for desktop use so I can see the VFD illumination while operating. It isn't bright enough to light a room or wall with, but is enough that it can be seen in indirect sunlight conditions. I wouldn't recommend using the amp on the go without sufficient vibration dampening, since vibration seems to be easily picked up by the VFD and can be heard in the output. Overall I'm very pleased with the kit, and would recommend it to anyone interested in trying or learning about tube-based amps.

Response from microwavemont | Nov. 25, 2016

I am really surprised to see your masterpiece using Nutube. Indeed current shape is far beyond my kit. Excellent and thank you for nice and useful review. I really appreciate!

David | Nov. 11, 2016

No documentation

For ULTRA, a successor of SDuino

I was hoping for an Arduino that I could program to use its display.
No documentation. I tried various Arduino configurations with no luck. Tried to reach vendor. No luck yet.

Response from microwavemont | Nov. 11, 2016

Hello and thank you for precise comment.
I've confirmed your question at relevant hackaday project and answered it there. I would like to repeat the answer as, for Ultima programming at Arduino IDE, we need Atmega1284P support by "board manager" on IDE. Exact procedure to add Atmega1284P is described at https://hackaday.io/project/13088-minimal-and-self-contained-atmega1284p-mod-chip .

Kamaldeep | Nov. 3, 2016

Radio with the smallest LCD ever

For DSP radio version 3

The most attractive thing on this radio is the LCD. I listen to FM most of the time and reception is very clear and volume controls are great. Its very unique approach with the microcontroller. Whole code is available on the website. Japan is well known for making things smaller and he kept that tradition. Will buy more.
Thanks

Response from microwavemont | Nov. 3, 2016

Thank you for nice product review. I am very happy to see your satisfaction for DSP radio. For shortwave reception, we need some antenna (just several metres wire is enough) but you may also enjoy exotic radio station on Caribbean seas. Thank you again!!

Kamaldeep | Oct. 26, 2016

What a wonderful product.

For Z80 single board computer version 2.0

I must say this is the best product, I ever came across. It will take you back in the beautiful 80's world. I can't thank enough. The best part is you can keep it with you and all you need is pocket TV to indulge. And don't forget it is Made in Japan.
Thank you

Response from microwavemont | Oct. 27, 2016

Thank you so much for wonderful review message. Indeed I am very glad to receive such a message. I have been trying to spread the joy of "gadget" all over the world and I am very happy to hear your satisfaction! Thank you again!

Pete | Oct. 24, 2016

Another fun and useful Arduino concept from Microwavemont

For ULTRA color, a Arduino compatible FULL COLOR OLED

Uses an Arduino ATmega1284P with an onboard full color OLED, micro SD card reader, with integrated FTDI USB interface and all on a small form factor board. This board is easy to program and the seller provides access to a library and example source code to get the user started. His documentation includes a schematics which are always helpful. One of the best things about this seller is he is easy to contact and quick to respond with helpful information. He stands behind his customers as he proved by quickly sending me a replacement for a failed board. His projects are neat, well conceived, fun and priced very affordably!

Response from microwavemont | Oct. 24, 2016

I am very glad to see your review. Indeed I am not running commercial company but just want to spread the joy of making something all over the world. I am very happy if I can be some help of your making something interesting! Thank you so much!!

Kamaldeep | Oct. 24, 2016

Super Tiny Basic Computer

For Super tinyBASIC computer (assembled)

This is an awesome product. You will not believe until you hold this gadget in your hand. It is very easy to use and very well made. My kids love to play with it. I remember the old days when I used to write Basic programs. A must buy for a computer enthusiast like me. Thank you very much.

Response from microwavemont | Oct. 24, 2016

I am very glad to hear your satisfaction. Actually this computer has a far-extended TinyBasic and lots of "hidden" extended BASIC function is implemented. Most of operation introduced in
https://www.youtube.com/user/microwavemont
is implemented, and even without keyboard nor FTDI interface, text file named "AUTOEXEC.BAS" stored in SD card will be automatically executed just applying power supply. Moreover, it has print-out function and if TTL (19200bps) serial printer is available, we can enjoy paper print-out. Thank you so much for reviewing product! I guess your children will become "super-kids"!!

Mathias | Oct. 14, 2016

Great SBC - fast delivery - friendly communictaion!

For Single board Z80 computer (assembled)

Well documented, cool device based on Grants work to enjoy playing with Palo Alto Tiny Basic.
Great SBC - fast delivery - friendly communictaion!

Response from microwavemont | Oct. 14, 2016

I am very glad to hear your satisfaction. One thing to be noted is, the SBC is surely inspired by Grant's work but not his one because I could not get his permission. Anyway Thank you!!

Pete | Sept. 6, 2016

Neat! Miniature Arduino Powered Receiver

For AM-SW-FM radio by DSP radio chip version 2

Miniature 2"x2" AM/FM/SW Receiver is fun kit that actually works! The kit it is not difficult to build. The Arduino, Radio ICs and miniature OLED display all come pre-installed. However, I don't suggest this kit for someone inexperienced with soldering SMD components as the resistors, capacitors and LEDs are size 603. That's very, very small and without care they can get lost on your desk or floor with a slip of the tweezers or a sneeze! But, there are only about 20 to solder along with the volume and tuning controls, antenna, on/off switch, battery and stereo headphone jack(yes it's stereo!). An experienced builder can construct this radio in less than an hour since it uses so few parts. The buyer will be required to provide a re-chargable 3.7 battery, which by the way, can be charged with radio's built-in charger by just plugging it into a USB jack. An LED will tell you it's charging and when complete.

The OLED display is very small but very readable and large enough to display the mode, frequency, stereo(FM only) and signal strength.
It's easy to tune just rotating the tuning control and adjusting the volume control with plenty of power for headphones or a powered speaker.
The FM is great but the AM and SW will require a decent antenna.

It a neat little radio and fun little project.

Response from microwavemont | Sept. 6, 2016

Thank you for wonderful review of AM/FM/SW receiver kit!! I am very happy to see your satisfaction for the receiver and review surely encourages me of creating kit on tindie. Again thank you so much!