Koncocoo

Best Interfaces

Phantom YoYo 170 Points Mini Breadboard for Arduino Proto Shield (6 PCS)
Color Red + blue + black + white + green + yellow Material ABS Features With 170 tie points With self-adhesive tape on the back, make it easy to stick on the Arduino Prototype Shield.
Reviews
"They're cute, but I'm not sure what gauge of wire they're built for."
"I paid $12 for these little breadboards."
"These things are so freakin' handy."
"Solid product."
"These are very nice, tiny and perfect for my indoor solar night light projects, I want parts out and showing on some solar projects like "Solar man"!"
"Needed a few for my Arduino and Pi projects."
"The backing does set it apart from other boards, though."
"Just right for a little project and they interlock to make a bigger project."
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Elegoo 4 pieces 830 tie-points Breadboard kits Solderless Breadboard with 4 Colors for Arduino kits compatible with UNO R3 Mega 2560 Nano
Component List: 1 pcs White 830-tie points Breadboard. 1 pcs Green 830-tie points Breadboard. 1 pcs Blue 830-tie points Breadboard. 1 pcs Pink 830-tie points Breadboard. Color legend on distribution strips.
Reviews
"Decent size (couldn't find larger)."
"Initial boards were warped and gave me issues."
"Working so far."
"Cut to size!!"
"They are what I expected and time will tell if they hold up during heavy use."
"Great breadboards, I recommend Elegoo for Arduino and related propducts."
"It has some trouble with some of the smallest (cheapest) resistors in a few of the points, but most boards do, and I don't think it's the board's fault, it's just that cheap resistors are made with tiny thin leads."
"Delivered on time."
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3PCS Mini Solderless Breadboard,400 Ties Clear Circuit PCB Board Kit for Proto Shield Circboard Prototyping
3PCS X Michael Josh Brand new 400 Tie Points Breadboard with 2 Positive & Negative Power Lines on both ends.
Reviews
"A good buy if you need a small breadboard for quick projects."
"Excellent product and great value."
"Good Product, On time delivery."
"Strong, simple, and get the job done."
"I buy these by these in multiples, 3 to 6 at a time as my projects grow."
"The holes can be a little small for some applications, but other than that, as expected."
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Best Communication Integrated Circuits

Original Atmel Dip-8 ATTINY85-20PU Tiny85-20Pu Ic Chip Pack Of 5Pcs
Model: ATTINY85-20PU Quantity: 5pcs Color: As picture show Item name: Tiny85-20PU IC Chip Package include: 5pcs Tiny85-20PU IC Chip.
Reviews
"All five were shipped in genuine Atmel packaging, in ESD Safe bags."
"Good price."
"Love em."
"Shrinking Arduino projects down in size."
"Very handy controllers for electronics projects where you need a small piece of logic, where a full Atmega would be an overkill."
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Best Prototyping Boards

RFID Master Starter Kit for Arduino, kuman Update UNO R3 projects with Tutorials, RC522 RFID Sensor Module LCD Servo DC Motor K25 (Updated Arduino RFID Kit)
Color: Updated Arduino RFID Kit. 5V stepper motor x1. 26. stepper motor driver test model x1. 27. water sensor model x1. 28. 4 x 4 Matrix Array 16 Key Membrane Switch Keypad x1. 36. Arduino joystick& Jumper wires x1. 40. DC 9v Battery Box including the cable x1. 44. S50 special-shaped card (as shown by the key ring shape) x1. 48. Jumper Wires x25. 49. double storage box x1. 1.W e are professional factory that is concerned with the design, development production and marketing of arduino, 3d printers, raspberry pi . 2.We have processional engineer team to offer you tutorials which you can start from beginning. 3.We can offer customerized ODM service after getting your components listing requirment. Including arduino RFID-RC522 Module (RFID reader) + RFID Proximity ID Round Tag + RFID Proximity ID Card Tag.
Reviews
"What's needed is an explanation of how to connect the components to the UNO."
"It comes with a large assortment of parts."
"When you give kids the opportunity to figure things out, experiment, take risks, and direct their own learning, they are so much more engaged, and learn at a deeper level! I've had the kit for a little under a week, and the students have completed three different projects builds. They found lots of ideas, but then had to narrow it down to beginner level projects. It didn't take them long to figure out the programming requirements, and then they were up and running!"
"Not only does it include all of the usual 'introductory' components, but also several components that can be used on real applications as well as more advanced tutorials. The board was recognized by the Arduino IDE without issues, The item description has a list of the components included and you can see there is a wide variety of them. The lack of documentation really hurts the kit, as some of the components do require more knowledge than is usually found on the first results of a google search, but the info is out there. Despite the lack of documentation I still highly recommend this kit, not only is the number and variety of components excellent, they cover a wide gamut of applications, from basic accessories (breadboard, battery holder, jumper cables) to the esoteric (RFID kit), including a couple of motors (which are always fun to work with)."
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Best Radio Frequency Transceivers

Turning Technologies Response Card RF Clicker
Optimized for small, medium and large presentation environments, the ResponseCard RF (Radio Frequency) keypad takes advantage of the latest in audience response technology advancements. The ResponseCard RF clicker provides features and functionality that ensure responses from 10 to 1000's are accurately, timely and effortlessly transmitted to the presenter.Our patented design immediately gathers real-time feedback from participants. Enter your model number to make sure this fits.
Reviews
"Product came with included batteries but it's powered by two coin cell CR2032 (3.0V) Lithium Batteries if you need to change them. Hopefully this helps with whatever issues you may be having: Power Up - Long Pulse (2 seconds). Polling Open - Successful Response - Long Pulse (1 second). Polling Open - Valid Response - Long Pulse (2 seconds). Polling Open - Invalid Response - 3 Short Pulses (0.5 second each). Polling Closed/Invalid Answer Type - Short Pulse (0.25 second). Change Channel - Success - Short Pulse when GO is pressed (0.5 second) Long Pulse after successful change (1 second). Change Channel - Invalid - 3 Short Pulses (0.5 second each). Change Channel - 5 second timeout - 3 Short Pulses (0.5 second each). Receiver Not Present - 10 second timeout followed by 3 Short Pulses (0.5 second each)."
"Its for school..does what its meant to do..cant say much more (my sons review LOL)."
"I bought this for my Psychology class at college, and needless to say I was confused because mine looked different from the rest."
"So mine turned out to be a brail clicker that vibrates instead of lighting up."
"Used it in my Sociology 101 class."
"I bought it because it was a requirement for one of my classes."
"This clicker didn't actually send any of my answers but displayed the green light."
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Best Diodes

Haobase 100Pcs 1A 50V Diode 1N4001 IN4001 DO-41
100x 1N4001 Diode 1A/50V.
Reviews
"They prevent current flow from one direction and allow it from the other."
"Great deal."
"They are diodes."
"Worked great for my automotive fan circuit, allowing the ac compressor solenoid to power the fan switch but preventing the temp switch from back-flowing and operating the solenoid."
"99 of them worked as expected, the last one I can't verify because I dropped it in my shag carpet and can't find it... Shame..."
"Very good price for high quality diodes."
"Absolutely perfect!!"
"They're diodes, they work, only needed 3 but it was cheaper to buy the 100 pack here than to buy 3 anywhere else."
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Best Transistors

Hilitchi 24-Values 2N2222-S9018 / BC327-BC558 NPN PNP Power General Purpose Transistors Assortment Kit - Pack of 840
• 2N2222 NPN - 35pcs. • 2N3904 NPN - 35pcs. • 2N3906 PNP - 35pcs. • 2N5401 PNP - 35pcs. • 2N5551 NPN - 35pcs. • A1015 PNP - 35pcs. • C1815 NPN - 35pcs. • C945 NPN - 35pcs. • S8050 NPN - 35pcs. • S8550 PNP - 35pcs. • S9012 PNP - 35pcs. • S9013 PNP - 35pcs. • S9014 NPN - 35pcs. • S9015 PNP - 35pcs Package Quantity: 840pcs(+/-2%) .
Reviews
"Minus one star: A datasheet with all V_CE, I_C, P_D, and f_T values would be great though."
"Nice assortment of devices to help the maker or kit builder."
"It would be considerate of the seller to put out a folder with all the spec sheets so we don't each have to spend an hour googling and downloading."
"Great assortment of general purpose transistors, NPN and with complimentary PNP in most cases."
"Good assortment and quantity of popular npn and pnp transistors."
"quality choice for my work shop, love it."
"Good assortment."
"This kit looks great and has a ton of variations of transistors but the 2N2222 models (the most used/called for) seem to be either bad or have non standard pin outs for BCE."
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Best Microprocessors

Teensy 3.2
The 32 bit processor brings a few other features to the table as well, such as multiple channels of Direct Memory Access, several high-resolution ADCs and even an I2S digital audio interface! Features: - More power on 3.3V pin for modules like ESP-8266 - 7 Timers for intervals/delays, separate from PWM - USB with dedicated DMA memory transfers - 3 UARTs (serial ports) - SPI, I2C, I2S,CAN Bus, IR modulator - I2S (for high quality audio interface) - Real Time Clock (with user-added 32.768 crystal and battery) - 4 general purpose DMA channels (separate from USB) - Touch Sensor Inputs.
Reviews
"As expected."
"I know next to nothing about programming, but I was able to follow some project instructions and make a few tweaks to get this working with my exercise bike as a game controller, for forward movement."
"It comes with an extremely useful printout of all the features of each pin on the board."
"It uses Arduino software which makes development a breeze and I had it working as pseudo-keyboard after about an hour including soldering buttons and writing up the code."
"No issues, this is my 4th teensy 3.2."
"this is one of the best boards out there."
"Theyre so useful and easy to use that I throw them in any project I can and they've become my go-to device for anything small that need an arduino in it."
"It's great, takes Arduino to a new level (both in size/IO count and and speed) !!"
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Best Logic Products

Gund DC Comics Batman Malone Plush, Black, 12"
About Gund: for more than 100 years, Gund has been a premier plush company recognized worldwide for quality innovative products. Enter your model number to make sure this fits.
Reviews
"I had bought my son batman Malone bear in the pajamas and the material of his outfit is cotton and soft and huggable. I’m guessing that Batman in the pajamas is meant to be a cuddly bedtime bear so they used softer materials."
"I bought it for a Christmas gift for my nephew and he loved it too."
"Gotta love a Gund!"
"Both the Robin and Batman's clothing are not removable, which I like since it means my boys won't lose them!"
"Bunny goes with her everywhere and it is a good introduction for any young girl to the comic book world."
"My 5 yr old loves it."
"Bought this and sent it to our granddaughter for her birthday!"
"I love the costume, just wish the bear was a better quality--it feels a bit cheap."
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Best Signal Components

FiiO D3 (D03K) Digital to Analog Audio Converter With Micca 6ft Optical Toslink Cable - 192kHz/24bit Optical and Coaxial DAC
Therefore, it is important that the digital audio output of your device defaults to or can be set to PCM/LPCM output. Feature Highlights - Built-in high-performance phase locked loop (PLL). - WM8805 ultra low jitter digital receiver. - Supports up to 192KHz/24bit audio signal. - Optical and coaxial inputs with selection switch. - 2 channel standard stereo RCA output. - Indicator for digital receiving status (LOCKED). - MINI USB power supply port (AC adapter included). Converts coaxial or optical digital audio input to analog stereo output over RCA and 3.5mm mini jack.
Reviews
"I bought the Fii0 D3 to connect the TV to a set of speakers and to a headphone I use when everyone else go to bed. Its a simple problem to live with because it only lasts the short time it takes to shut off and turn on the receiver box."
"Included in the package is a small yellow sheet with a disclaimer indicating that the device does not decode Dolby Digital. Since Dolby Sound is extensively used in television programing, including commercials and old sitcoms, it is probably not the best product for this particular purpose."
"The device works great and solved my issue of converting the Playstation 3's optical output to analog."
"I recently bought a new flat screen Panasonic TV and was surprised to find that the only audio output was optical/digital, no longer the red/white RCA analog jacks that I have been using to feed my external speakers."
"I am by no means an audophile, but this little buddy helped me distinguish between 24 bit FLAC audio and 320 kbit MP3s."
"I bought this digital/analog audio converter as a gift for my brother, because he had just splurged on a high-end 55 inch LG TV but only had a 10 year old but good quality stereo-only amp to use for expanded audio."
"I moved to a new place with Google Fiber TV recently and neither the TV box nor the TV has analog outputs, so I had no way of using my Sennheiser wireless headphones."
"Why these high end televisions have deleted the simple audio out jack/plug for headphones is beyond me."
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Best Digital Signal Processors

Southwire Tools & Equipment 16040T Compact Auto-Ranging TrueRMS Digital Multimeter with MApp Mobile App
Style: 16040T. ENHANCED FEATURES: TrueRMS - Higher accuracy on AC circuits, 10 measuring functions, plus MAX/MIN, Powerful built-in work light, 4000 count backlit display and CAT lll 600V, UL listed. SATISFACTION GUARANTEED: At Southwire, we strive to ensure that every product we develop helps increase safety, improve productivity, reduce manpower, save time and save money - both on and off the jobsite.
Reviews
"I have become addicted to Southwire tools and test equipment."
"Great tool, wish I had one sooner."
"The best multi-meter i've ever owned I use the bluetooth on this unit in real world applications all the time."
"OVERALL: I really wanted to love this meter, but bugs in the data collection and file transfer are unacceptable at this price. Compared to my old Radio Shack Extech 22-816 with its dim gray LCD, this thing is a sight to behold. It feels tough, like it could bounce around on a real jobsite without breaking. And the lithium battery is replaceable so when it finally wears down you don't have to chuck the whole thing. The meter ran for several hours after a mere 10 minute charge. The screen is soft plastic and shows faint scratch lines after being cleaned with flannel. I pried open the four segments of its internal post using the pointy tip of the negative probe, and that fixed it. Which is a problem for doing overnight data acquisition, because it means you need a full charge before starting. See below: BUGS. ---. Disclaimer: I'm using the Android app on a Google Nexus 4 phone. Word to the wise: try powering off/on the multimeter just before telling the phone to search for nearby devices. Three times I got to 98% complete on the import after 10 bleepin' minutes, and it stopped. I finally managed to get the one big file loaded by deleting every other saved recording on the meter, then re-importing. I can't for the life of me guess how they goofed, but even though the meter is set to 20NOV2016, the data file gives the date as "12-11-0186". Sure, you can figure it out if you think about it, but it's one more bug making the whole data integration feel like an afterthought. Sure, the battery won't last much longer than that, but assuming the battery could be made to last longer why hardcode a 10 hour limit on the duration of data collection in the phone app? .. III) If you select max/min before data logging you will get readings with precision of FOUR digits after the decimal instead of only one. TLDR; this is a very useable, functional, powerful, beautiful meter suitable for professional work and even basic data acquisition."
"Item is as described and works perfectly."
"I primarily use it for DC power, when working on my motorcycles and installing new electrical components. The multimeter is easy to ready, intuitive to operate, and feels like it can survive some bumps and falls without breaking. It would have been nice is they would have made the probes long enough to stick in the outlet and stay without holding them."
"One person said it didn't have a glass or plastic cover over the display, well that is wrong. I have seen much worse, but the meter isn't very fast under the continuity setting and that can be related to the probes. It seems to be well made and the rechargeable battery is a nice thing to have. The fuse is easy to access under the battery cover as well. If you are looking for a quality meter with a color display, then this is really the only game in town, as I have never seen a color display on any portable DVOM."
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Best Semiconductor Timing Management Products

BOB - Screen Time Manager - Manage Your TV Time & Video Game Time
Let TV Timer BOB be the enforcer — no more “TURN OFF THAT TV!” arguments. Each child in the house (up to 6 users plus 1 parent user) has a four-digit PIN that they enter before they can turn on the attached device. (Up to five blocks per user for any or all days of the week. Quickly add bonus time or remove time from any user without changing their regular allotment.
Reviews
"I bought Bob to replace the TV Allowance we had used for years, but was not compatible with three-prong plugs or TVs that require a trickle of power. Bob had the maddening habit of shutting DVDs off when a scene with low lighting came on or the credits rolled."
"I bought this to limit TV time for our 8 year old son who also uses the video game units way too much."
"(if you want TV time on the weekend, you'll have to limit your own TV time during the week). The problem however for us was the fan on our DLP TV (and I assume you'd have the same problem with this device if you were using it with a projector). BOB had already detected the TV was off, so it had lock itself, which means it would then alarm that the TV was on and you'd have to unlock BOB so the TV could finish its cooldown."
"I was so happy with the success of the BOB for the TV that I bought a second one for our home computer because my older daughter was spending way too much time watching her TV shows via the internet. We also occasionally experience the BOB randomly shutting off the TV or the computer in the middle of using it even though time has not been used up."
"Each one has to independently remember his user number and his password. - Time settings are lost when power is cut (interestingly, other settings are not)."
"We have not figured out why it does it so I am very displeased with this because my son has adjusted to the time he has left and then gets upset when it turns off before the time is up."
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