That’s very helpful, thanks. In the past I had good results with custom shields that connected the FONA’s Batt pin to the Stalker’s VCC pin, but the new design uses a diode that cannot handle the current necessary.
I recently received two Mayfly v0.5 units which I am evaluating. I used to use the Seeeduino Stalker v3.0 for projects, but I find the v3.1 they have replaced it with, among other problems, will not put out enough power to run an Adafruit FONA 808. Fixing this requires desoldering a surface-mount diode and shorting the pads, which is a…[Read more]