When using a RAK19007+RAK4631, is it possible to disable the toggle of 3V3_S power rail via IO2? I would like to use IO2 as a general purpose IO, for example as a user button, LED, vibration motor, etc.
Is is possible to set IO2 to not do this, so it can be used in the same manner as IO1 or IO3-IO8?
I imagine I could use a transistor such as 2N2222 and avoid shorting IO2 to GND, using it as a trigger to power the component connected to the emitter leg of the transistor. I have done this to power components like vibration motors and passive piezeo buzzers that require more current than the GPIO pins can provide. That’s another issue though
I see. However I would prefer to have 3V3_S always on. Given you suggestion, I would then need to remove R23 on Ver.C boards and bridge 3V3 from somewhere else like VDD pin to provide power to 3V3_S. Would that be accurate?
Also is this impossible to do via software, to keep disable 3V3_S toggle but keep 3V3_S always on?
Thank you, this was suggested by someone else and since that it microsurgery that I cannot hope to do myself I will just have to put away my idea to use IO2 without toggling 3V3_S power. I sincerely appreciate your suggestions and expert technical assessments!
If you need larger volumes, like 200 RAK19007, you could send an inquiry to our sales [email protected] and we could look into a custom version for you.
