Checking the datasheet the rm04 shouldn't need more than 140mA, and acording to the L7805CV datasheet heat sinking is needed when they have to deliver over 1A output current. Any suggestions powering the module?
Heatsink.... 
lol
Checking the datasheet the rm04 shouldn't need more than 140mA, and acording to the L7805CV datasheet heat sinking is needed when they have to deliver over 1A output current. Any suggestions powering the module?
Heatsink.... lol