The Drones Mod adds a drone looking like a minecart to the game which can be launched up into the air. You can then access the viewing camera of the drone to scan the closeby area. A simple but yet effective mod.
How to use the drone?
Begin by crafting a wooden hoe with 2 wooden planks and 2 sticks. Then tap on the ground to spawn the drone.
Look up into the air to launch the drone and type cam in the text chat to view the angle of the drone. To exit the cam mode type back in the chat.
To recharge the battery of the drone simply tap on the ground to despawn it and then tap on the ground to spawn it again with a fully charged battery.