I'm trying to put together a basic serial reciever, but I'm having some voltage problems. The IR module (Sharp IS1U621) doesn't seem to be getting enough voltage when connected.
When it's not connected - I get 10.5V before the regulator - and 5V after
When the IR module is connected - I get 6.5V before the regulator - and 4.3V after - This is not enough to power the module!
I'm not really eletronics savy enough to work out why this is - and what I need to do to fix it. Help?