[No.14]水分警告パネルで水やりはバッチリ!
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/7uFlXIRfVNi2IxIGC6NOJ.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=iypqd6PMycMBFiI%2BPcy1Lfdxq9I%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
みなさんは植物を育てるのは好きですか? 私はサボテンを枯らせてしまったことがあり、植物の栽培はどうも苦手のようです。水やりは時々でいいはずだから……と思ってついそのままにしてしまうのが原因。『そろそろ水をちょうだい!』と植物が教えてくれたら、さすがに申し訳ない気持ちになって忘れないはず……。どうにかできないかな……。 こんなときこそSPACEBLOCKで発明! 水が足りなくなったら顔マークで教えてくれる水やり忘れ防止装置を作ってしまいましょう。「土壌水分センサモジュール」を使いますよ。
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/QQrBirYXtA6DP9Ng58nDa.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=pdSUeCv8NjjOqmajZ16D2GK9PR4%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
必要なもの&準備
- SPACEBLOCK通常パッケージ[SPACEBLOCK本体、USBケーブル、電池ボックス]
- 土壌水分センサモジュール(土壌水分センサ)
- 8×8 RGB LEDマトリックスパネル(LEDパネル)
- ジャンパーワイヤ[ピンヘッダ-ピンソケット3本]
- プログラミングをするパソコン
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/0nnHs1fqZgHev4OJZTldm.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=Ju8nnze%2Fmjzxu3BB1GCC6E8zXTA%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
SPACEBLOCKに拡張パーツを接続する
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/nVaddQmLhBDUB0MK1AjuR.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=QDLxN%2BfYCgKn7qUiCVofCyF28Zo%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
細かい部分は次の図を参考にしてください。土壌水分センサの「G」「V」「S」から出ている3本のジャンパーワイヤをどこに挿すのかを確認してください。
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/U2A-C8NEHKyjAYzy8rotA.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=UD1%2FPR78VedtzEKGiZP%2B3C79BIE%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
土壌水分センサって?
土壌水分センサは、土の中の水分量を測定することができます。水分がない状態が0で、水分が多くなるほど数値は大きくなります。このように量や大きさなどの程度を数値でプログラムに渡すことをアナログ入力と呼びます。
土壌水分センサは、測定した水分の量に応じてSPACEBLOCKに挿したピンヘッダの電圧を上げたり下げたりします。電圧の程度に応じて0から1023までの数値に置き換えてプログラムに値を渡しています。
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/w1IVTk-ZzxH8GxPlwtNOm.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=7YTJoq%2BxC2ZreCBT647NV0zWny0%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
土壌水分センサの値をチェックしてみよう
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/A3wels-xLnjB3zX1XKxUK.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=OFo5ZZ1zmEKjhjwETloqica8nw8%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
プログラムを実行すると、土壌水分センサが測定した値がコンソールに表示されます。銀色のセンサ部分が何にも触れていないと値は「0」ですが、指ではさむだけでも水分を検知して数値が上がります。水に濡らしたティッシュではさんでみるなど数値の変化を確かめてみましょう。
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/M0kIAsZxLPZ3j70Q4o9WO.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=3HKMcCdahfUZICMJPN5MUzjdCyg%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
土壌水分センサの銀色の部分以外には、水がつかないように注意してください。SPACEBLOCK本体や配線部分も水がかからないように扱ってください。故障や発火などの原因となります。水がかかるおそれのある部分には絶縁テープを巻いて安全に使いましょう。ビニールテープも利用できますが、防水性にも優れたブチルゴムという素材のテープは接着剤ではなく素材同士がくっつき合うので扱いやすく便利です。
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/tlbLVyqxUXAlmWTG-a0WD.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=BJD6Hyju9gYHpFRR67lgKmx5mzM%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
土の乾き方によってLEDパネルの表示を変えよう!
土壌水分センサの使い方がわかったところで、早速LEDパネルで警告を出す仕組みを作りましょう。
変数を作成する
新しい変数を作成し「water」と名前をつけます。
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/yUWaEiD6E-Qnfcf47sbkF.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=NWT3o6RZ5Rq4U4op%2Bun1Lo9H9o0%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/wyNFXY8AwK-dQf_-6THVe.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=qKDsVQSziQzwHO2qnaHlRIe7TA8%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
条件で処理を分ける
続けて、LEDの表示を切り替えるプログラムを作成します。土が少し乾き始めた状態で軽い警告を出し、かなり乾いた状態で強い警告を出すことにします。どのくらいの値で警告が出るようにするかは、実際に植木鉢に土壌水分センサを挿して、土の状態でどの程度数値が変わるかをチェックして決めましょう。
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/NOaaEPMU4jj2OYjNcXwbq.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=T0qQiDELwiXBmE6iWr5JQxqKXtk%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
値の参考値は、以下の通りです。
[参考値]
- 0~300 乾燥している土
- 300~700 湿った土
- 700~950 水中
今回は土壌水分センサの値が500より小さくなったら第一警告を出し、300より小さくなったら第二警告がでるようにします。次の図の通り、[もし《 》なら…でなければ…]ブロックと[《0》《=》《0》]ブロックで、値によってLEDパネルの表示方法を3通りにわけてください。
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/vfP3c-yh_jW0yZ68vUoIr.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=prF%2B7XooHb79A4pDSZZSGmAhJ8c%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
LEDパネルの表示を指定する
[もし《 》なら…でなければ…]ブロックの間にLEDパネルの指定を追加すると、次の図の通りプログラムが完成します。LEDパネルに顔を表示して感情に訴える作戦です。
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/EHmxzzRRSQ_WCFmddOBFi.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=SgY33RIQfEUarJt7EIE156eSf34%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
プログラム完成
これで完成です。土の乾き方に応じて警告が出るようになりました!
土が十分湿っているときは何の反応もありませんが……
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/ro-csq5PYojQi4_8r-xyK.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=yzz%2Bf9COj1YPQFNXBx6reYteG%2Bw%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/AlK6nD3kBbJYjE9A4dW8f.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=HqaficqQInoBP8lPUOO1w0y%2F8u0%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
赤い 『もうダメ!!』な顔が出ています。もう限界みたい! はやく水を!!!
![](https://s3.ap-northeast-1.amazonaws.com/spaceblock.jp-storage/inquiries/2024-03-26/auOhk5Ib9jfDGOSeTQKvy.png?AWSAccessKeyId=ASIAZZVIWFLR7BDPA65E&Expires=1722072468&Signature=aQTj4Ad%2F%2FW6yOqtDlX7QvMemdU4%3D&x-amz-security-token=IQoJb3JpZ2luX2VjEA4aDmFwLW5vcnRoZWFzdC0xIkYwRAIgOVZvVezhmitgzX48Kbq8heWOZaqARNbAJ3kjRJwEwQYCIFRbyfaxCzZABLOh0kFIm%2FUDfjN71V8%2BCnTF4IGUpuvpKp0DCOj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQARoMNjczNTg5ODk3OTU1IgyHlI7o4JqWaHroz4gq8QI4%2BPUBjrbRU2r2UUwP5m3O2sYLQZdBpl5CiZ%2FN%2BxKMHyObikEkELk99JcZK1v0L3QzXoxqGRUyR4msKmE4ZmIsrNZxJbsnw%2B7jv%2BSefjopwMbrZAivvT%2FQHonCPEPjwar6D1zSD6YW4ndGFwiAXCwgHgkNixB38829qWqkiBf6rx6t1LvydpL7Qa%2FI7SQqin11xvuY5tnhL1ynAWjCvZU33J0fQr2krv9CByBOEZvCDI2sNd5mKf4YH8avw%2FuehGK4iEUT62b5si7KhjNRAS6mUQVg0uimtN0Y3C%2BJYWcVRYCFA4%2B1NTUYlTlHFe9i7Z1dG1DYI38%2FUjT1Sf0H6VI%2F6NOf%2BDnJmehzbmSWADiXMaz%2Bt3M8YbF4ASCinEupgGjGztkZhOInYi%2BF2t8UfGBLc%2FFw0FYaWXMYMQD5vJ34woKm%2BurpR%2BEwQsdhGbaaQFsP19%2B%2B9R5mL8yKao5Oe213z42%2FtCUufTPVhiCst3VK%2Bu0w2aSStQY6ngHspDKY7bjYVeOQq9S1uOxLV2Xby%2FTZEHn7TjMitPz9c32a1wItRWKZQ2TJUmshqDa7OzascqJu3gmkipBI67q%2BXCujCxBlQWWYw49HBHtS9UMB2L0jR42CkkyIFBqgem88K1TOqH9wl4z%2Bi3iC5wr0fYfEaczxTaKVPX1PQdk7l6rnPPx2X6tLUMcRcNRxjvP8DSQ%2F0MhBMhQdPsYZRA%3D%3D)
これでもう水やりは忘れないはず!!