Sooner or later, the Arduino starts to feel a little claustrophobic. Your sketches start running out of memory, so you need more RAM. You want to talk serial to another peripheral (like an RFID Module) AND watch the action in the Serial Monitor at the same time, so you need more ..
DC 12V 30MA 1 Channel Voltage Comparator Module LM393N LM339 IC ChipFunction:1. Enter a voltage and the reference voltage contrast on the module (The reference voltage can be set by an adjustable electrical overcast), When the input voltage is greater than the reference voltage, ..
1, 16-key board TTP229 capacitive touch sensing the IC
2, on-board power indicator
3, the working voltage: 2.4V-5.5V
4, the module can set the output mode, the output mode key, the longest output time and fast / low power selection
5, PCB board size: 49.3 (mm..
The micro-sized, Arduino enabled, usb development board - cheap enough to leave in any project!
Support for the Arduino IDE 1.0+ (OSX/Win/Linux)
Power via USB or External Source - 5v or 7-35v (automatic selection - 12v or under recommended)
On-board 500ma 5V Regulator