Why does my esp32 smoke when i plug it with the power source do I need to add a resisor?
this is my connection to the esp32
all vcc goes to vcc
gnd as well
for my Ph sensor its connected to I025
for my Dissolved oxygen sensor its connected to A1
for my relay its connected to IO1
for my lcd its connected to scl & sda
What is your +Vcc ?
How is your relay connected? What relay ?
all the sensors and relay are conned to grd and vcc
as for the relay its a srd-5vdc-sl-c
i dont understand?
next to Vcc there is the 3.3V Pin.
Did you - however - "manage" to make contact between Vcc and 3,3V?
If you "feed in" 5V into the 3.3V-pin. That is one possible reason why the magic smoke appears. Unfortunately Aladdin did not appear to fullfill your wishes.
This can even happen if a small metallic object is lying at the wrong place
Did you solder the ESP32-board into the PCB or is the ESP32-board plugged into a row of female socketstrip ?
Before I connect micocontrollers to a PCB I do a careful checking
are all components connected like they should?
are there no shortcuts ?
Taking care of no metallic things laying around near to the PCB
best regards Stefan
NOTE: the 5V relays can’t be powered from the Arduino’s 5V pin.
Not enough current to drive anything substantial from that pin.
Can you throw a sketch of how everything is wired together?
Snubber diodes on the relay coils etc.
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.
