







🚀 Elevate Your Arduino Experience!
The KEYESTUDIO W5100 Ethernet Shield is designed for Arduino R3 and Mega 2560, enabling seamless internet connectivity. With a micro SD card slot for file storage and compatibility with the official Arduino Ethernet Library, this shield allows users to create web servers and control inputs/outputs effortlessly. Ideal for makers and developers looking to enhance their projects with online capabilities.










| ASIN | B01E5JY7UU |
| Brand | KEYESTUDIO |
| Built-In Media | KEYESTUDIO Ethernet Shield W5100 |
| Color | white |
| Compatible Devices | Arduino boards (Arduino mega 2560, U&O R3) |
| Customer Reviews | 4.2 out of 5 stars 111 Reviews |
| Hardware Interface | Ethernet, MicroSD, MiniSD |
| Item Weight | 1.6 ounces |
| Manufacturer | keyes |
| Mfr Part Number | KS0156 |
| Model Number | 8541582678 |
| UPC | 600346570849 |
A**W
Very happy so far
Used this to get an arduino talking to an industrial plc over modicon modbus tcp, possibilities are endless for custom sensors etc, description mentions that all these boards have the same Mac, if it causes me problems or I'm unable to change it will update and lower my review.
K**M
Good product, good price, will buy again.
Came bundled with the Keyestudio Uno R3 and both work perfectly. The printing on top of the board (pin numbers, etc.) are a little harder to read than on boards from another manufacturer, but a bright light and a magnifier helped. This is a good product at a good price and I will buy these again.
S**N
It Works
I bought the cheaper Smraza board sold on Amazon and it did not work so I returned it and bought another Smraza. The second one did not work, either, so I returned it, too. This one works perfectly!
J**A
Good, not great
Good little shield. Keep in mind if you are using the ports that the shield is already using, you will likely get input/output errors. There's only a few free once the board is attached no matter how many slots you see.
L**R
Five Stars
Works great.
M**L
It worked twice and then quit.
Running the test code - worked great. Tested my code, worked twice then quit responding. Went back to the test code. It would not run.
J**.
Good buy.
Arrived in good condition.
S**K
Works w/Mega except for uSD card
As long as you don't put a micro SD card into the board it works okay. With a uSD card the Ethernet stops working after a handful of transactions, then the board has to be power cycled to get the Ethernet back. So, only half the board is working. 2.5 stars, rounded up because Amazon.
A**I
価格お手頃、動作は問題なし
Arduinoで電流計の遠隔監視用webサーバーを立てるために購入 購入してから2か月間ダウンせず動き続けています。 安いし、amazon発送で翌日届いたし、文句なし。
ミ**ト
UNO R3にネットワーク機能を
スタンドアローンでは物足りなさを感じたのでこちらを接続してみました。 導入は簡単で、UNO R3に重ね差し込むだけで終了。 オリジナル互換なので後入れのライブラリ等はなく、IDEのスケッチ例のEthernetからサンプルスケッチを選ぶだけです。 webserverを選択して書き込みし、PCのブラウザで見るとアナログポートの状態値が表示されリアルタイム更新されています。 設定については、プログラムの最初の方にMACアドレスとIPアドレスの設定があります。 DHCPが無いのでIPアドレスはここで固定アドレスを設定します。 IPアドレスは接続するネットワークの設定に合わせて使われていないアドレスの指定が必要です。 MACアドレスについては自宅のLAN内での実験程度ならば設定されている値そのままでも大丈夫ですが、仮値なので必要ならば使用していないネット機器のMACアドレスを拝借しましょう。 特に苦労も無く不足もなかったのでとても安価で満足です。
C**R
Defective shield delivered
Unfortunately I cannot go lower than 1 star. Equipment did not work and I tried a few weeks to get it running and figure out what I was doing wrong. Turned out I didn't do anything wrong, the shield just didn't work properly. Led's were all blinking nicely but that was it. Bought an original shield from Arduino, plugged it in and it ran exactly with the same code I used before and it was running perfectly right from the start. This piece from keyes landed immediately after in the garbage.
電**ん
MACアドレス~
互換品としてしっかり動作しています。 この値段だから仕方ないんだけど、MACアドレスはユニークではなく、一律DEADBEEFなので複数台をDHCP環境に置く時はご注意を。
ジ**ー
スケッチのサンプル通りで良い
これを使うためにネットで色々調べたのですが、うまく動きませんでした。結局、開発キットにあるサンプルのスケッチが正常に動きました。灯台下暗しでした。とりあえずならサンプルにあるMACアドレスをそのまま使えます。IPはDHCPでの獲得に成功しました。 この商品だけじゃないでしょうが、ピンが差しにくい端子があります。
Trustpilot
2 weeks ago
2 weeks ago