In fact, it's only slightly larger than Arduino's smallest board, the Nano, at 51 mm x 21 mm. Both boards are excellent options for circuit building and prototyping, but are there any differences ...

Here, I’m using the SIM800L and Arduino Nano V3 to develop a nifty one-channel SMS relay ... The SIM card must be inserted into the slot with its contacts facing the circuit board and the notched end ...

If you're developing a wrist watch, a small light-following robot, or a portable weather station with Arduino, one of the best boards you can use is the Nano, and for good reason. It's pretty ...