justDIY
Active Member
Has anyone worked with these particular bluetooth modules before? I was googling for a less expensive alternative to Sparkfun's $65 bluesmirf and ran across these little guys:
**broken link removed**
the one I'm looking at is the ESD-110, which is much smaller than spark's module, includes an sma extension cable, panel mount antenna holder and a dipole stub antenna, compared to Sparkfun's smirf which includes nothing. It also appears the Sena module is half the length of the smirf, while providing a more robust rs232 interface (RTS/CTS and DSR/DTR).
A few advantages I can see to the smirf - Sparkfun has included level shifting hardware on the module, making the IO lines 5v tolerant for a 3.3v device. They've also included some sort of hardware (shunt regulator perhaps?) making the power input flexible from 3v to 6v. Lastly, the Smirf claims to draw 25ma while the esd-110 claims 70mA.
**broken link removed**
the one I'm looking at is the ESD-110, which is much smaller than spark's module, includes an sma extension cable, panel mount antenna holder and a dipole stub antenna, compared to Sparkfun's smirf which includes nothing. It also appears the Sena module is half the length of the smirf, while providing a more robust rs232 interface (RTS/CTS and DSR/DTR).
A few advantages I can see to the smirf - Sparkfun has included level shifting hardware on the module, making the IO lines 5v tolerant for a 3.3v device. They've also included some sort of hardware (shunt regulator perhaps?) making the power input flexible from 3v to 6v. Lastly, the Smirf claims to draw 25ma while the esd-110 claims 70mA.