Walkie Talkie

Total Time Taken: around 24hrs (maybe more lol)

Day 1 - ~4hrs

researched about legal freqs in india
i kinda deep dived into docs and posts and found which ones i can actually use without going to jail lol
measured distance from my house to my friend’s for range test (he willl be my lab test sub basically)

also ended up reading too much on illegal transmission...not gonna do that dw

Day 2 - ~3hrs

drew up the layout on paper
listed out the features like audio tx/rx, maybe add a screen idk
not final yet but idea is solid
want it to work offline too like short range voice over nrf

Day 3 - ~4.5hrs

connected stuff on breadboard (esp32 + usb-c + amp + mic)
most stuff worked
still testing nrf lib (found a buggy one but kinda fixed it)
trying to keep it small and powered by li-ion battery
usb-c charging works!!

Day 4 - ~10hrs (or more idk)

spent whole day researching modules for radio receive + transmit
found a way to use it like a fm radio too
added speaker + mic with switch
was messy, took hours, some stuff still not stable
but yea now it can talk + maybe listen to radio
no clue about final box tho

might add more features later like channel select or OLED screen... or just move to custom pcb if this one lives lol