My partner and I decided to use a moisture sensor as a way to help people in countries that experience extreme droughts or to help you control the amount of water you use to water your crops so there’s no waste. We thought that you could stick the moisture sensor into the ground attached to the microbit and code it to buzz or make a sound to let you know that there is enough or too little water. You could stick it in a dried up river in dry season so when it buzzes you know that your ready to collect water. Lack or food and water is quite a big problem is certain countries so I think this could help with this problem.