I am in the early stages of putting together a new project, the purpose of which will be to detect when the mains electrical supply (230vac 50Hz) has failed and, using a GSM module, send an SMS message to one or more mobile phones.
The software and GSM parts Iwill do myself, the power supply part is where my knowledge is lacking.
At this early stage my proposal is to use a 5v 1A power supply, linking the 5v to a lithium battery charger to keep the 3.7v battery charged. In turn the battery will provide power for the Arduino Nano and the GSM module, as the GSM needs approx 2A when transmitting to the mobile phone network.
What GSM Modul will you use? Usually they already have a charging regulator. Generally, if you don’t know what you are doing you should really not mess around with charging LiPo batteries. That’s one the few ways of getting your house burned done with an Arduino 5V project.
Its quite a while since I played around with it but 3,7V should be sufficient to power a Nano. However, adding a step up module would not make the project significant more complicated.
Thank you, though having read the guidance article previously I am unsure which of the many faux pas I have commited.
LowArt:
What GSM Modul will you use? Usually they already have a charging regulator. Generally, if you don’t know what you are doing you should really not mess around with charging LiPo batteries. That’s one the few ways of getting your house burned done with an Arduino 5V project.
It'll be the Neoway M590 GSM unit, and it does not have an onboard regulator. I recently read an article explaining some ways to make the M590 kit more robust, as for burning my house (or anyone else's for that matter) down, I think I am not alone in wishing to avoid that scenario. Though I would not classify myself as 'not knowing what I'm doing', I would still like to improve my knowledge...hence the questions before the actions. [/quote]
