will my new schema work?

[pagman]

Hello, i have being playing for a while now with the a9g pudding board and now i want to make my own pcb design for a simple gps tracker (not led's, io etc), my plan is with the debug headers to upload my own firmware other than that it will be a simple pcb. i am not planning on having usb connection, The module will be powered by an 18650 battery

i would appriciate if you can give me your thoughts on my design and if you think it is gonna work.
i am sorry in advance because it is my first design schema so it might not look profetional at all

[MakhmudSultonov]

[pagman]

thank you i have completely overlook the power key !
i am thinking to use a tantalum capacitor fot the 100uf and a ceramic for the 100nf for the decoupling you think they will be fine? Thank you

[ZakKemble]

R1 and R2 are not needed. The A9 can already read the battery voltage using PM_Voltage(). See this #421 about your decoupling, 100u might be ok since you're directly connected to a battery and not dealing with an SD card.

[pagman]

R1 and R2 are not needed. The A9 can already read the battery voltage using PM_Voltage(). See this #421 about your decoupling, 100u might be ok since you're directly connected to a battery and not dealing with an SD card.

Thank you for the help! I thought I need the voltage devider even for using the PM_Voltage(), because I saw this on the schematic.

[ZakKemble]

I'm not sure why they have it there, maybe it just makes it easier to test the external ADC stuff. This project of mine #396 can still read the supply voltage without it.

[pagman]

I'm not sure why they have it there, maybe it just makes it easier to test the external ADC stuff. This project of mine #396 can still read the supply voltage without it.

thank you i really appriciate you help! i think my questions about the schematic are covered i am marking it as closed