I have this sim800L module 
It has a 3.7v - 4.2v voltage requirement. So I created a simple buck regulator using MIC4576 regulator according to it's schematics and adjusted it's output to 4.2 volts. It can provide 3A of current. And i powered it through my laptop charger, so there's no shortage of current in the circuit.
But the module(sim800l) resets as soon as it finds a network(it's my guess). If I run it without sim, it runs fine and doesn't reset.
I've also tried 2 18650s in parallel to be able to provide atleast 3A to the circuit. But it still resets after a few seconds.
Is there anything obvious I'm missing?
No comments:
Post a Comment