I need help to a project. So, i want to build a box with a temp/umidity sensor, a circuit to translate and send data coming from the sensor using a transmitter. All this components need to be powered with batteries.
What range to you want from your transmitter to your receiver? Non license transmissions are only available for low power at a frequency of 433 MHZ, should give up to 200m range with decent aerials both ends.
Frank
It is easy to build a circuit that was designed by somebody else. Print the parts list then simply gather the parts and solder them onto the pcb designed by somebody else.
You want a temperature/humidity radio transmitter but you forgot that you also need a receiver designed by somebody else, a pcb for it and a parts list for it.
Is this a school project and you must demonstrate that you learned how to solder?