SparkFun Forums

[smdFan]

Hi there

I have a 3V coin battery that I want to connect directly to Vcc of AVR microcontroller. The Operating Voltage of the AVR uController is 1.8-5.5 V.

However, is that a good or bad idea to connect the battery direclty to uCon.?

If it is bad idea, what is the best way to connect them? Thanks

Regards

[rdpzycho]

that would be fine if there would be no other sources connected to the battery (like a charger)..

if you are concerned with the variations of the voltage in a battery as it discharges try to connect a simple boost converter which may be found on the net..but if voltage variation is not that critical, it's totally fine..