I am an absolute newbie to electronics design and I'm looking to make an ammeter to monitor the current in a small little set up that I have. I use a 9V battery to power my little rig and need to be able to monitor the current from across the room. I was hoping for some help on how to make one that uses some LEDs as the display. Perhaps one for each 1/4 mA . The current range that I am expecting is 0 to about 20mA. Thanks in advance !!