I can buy an HC05 with legs, or legless .
OK, well baseboardless, is the question then- ! What's on the "baseboard"?You're saying just a 3.3v regulator ?If you look at the listings I cited, there are 2 slightly different baseboards. There's a button on one but not the other, but they both have a SOT23 3 pin so that's the Vreg I guess. But eg a Uno already has 3.3V right? So why do people mess with 2 resistors to make it? (Use a pretty blue led?)
Nick there are non-backboard boards with pins, though at least some are the Jy-Mcu(?) things.
So assuming one uses a 3V3 supply , there's still the RX level which would be wrong?
Wouldn't be too hard to put two SMDs on a backboard, perhaps some do. Some of them appear to have different part counts.
Looks like the Uno 3.3V is regulated by a LP2985, max 150mA
Yes a lot of boards say power up to 6v but signal 3.3v.
SO, does anyone who uses them, know the score?Is "everyone" ignoring the 3.3V signal bit?That's what the guy who makes the board with 2 resistors says.
Can't make your link work, but yes, found quote of 50mA of 3V3, regulator capable of more. Same as the HC05 max - so not as dumb as using the wrong signal level.