Which module?
How is it connected?
Photos of the setup?
Sorry for typing in hurry and missing out things.
I connected RFM95W,ESP32(30Pin development board),Oled.
Board type i selected was ESP32>NODE MCU-32S
At first i checked for the oled display and it wasworking fine.
After connecting the RFM95W neither the RFM95W module was initialising nor display was being initialised.
- RFM95W (LoRa Module) to ESP32:
MISO (DIO1) → D19
MOSI → D23
SCK (CLK) → D18
NSS (CS) → D5
RST → D14
DIO0 → D26 (Interrupt Pin)
3.3V → 3V3
GND → GND
- OLED Display (I2C) to ESP32:
SDA (A4) → D21
SCL (A5) → D22
VCC → 3V3
GND → GND
Power supply
7.4V ------ vin pin of the esp32
RFM95 3v3 + Oled 3v3 -------3v3 pin of esp32
I havent cross checked the wiring as of now, and will update you about it after few hours.
Please check the restand tell me if there is any issue regarding board type or power supply.
The issue was with the board type which i selected and changing the board type to esp32 dev module worked.
@rsmls today 3v3 and gnd pin started sorting
I removed everything connected to these pin and issue was still there
I removed on board ams and it still didn't go right.
Should i remove 106C S18N3. What else should i check for??
Sorry, these things are tricky to troubleshoot. Did you solder the ESP board directly to your prototype board? That would be unfortunate as it'll be difficult to remove once it's on there. It can be done, but it's a lot of work and there may be permanent damage.
The general troubleshooting process I follow is cut connections on either or both of the affected nets (I'd focus on the 3.3V in this case) in order to progressively isolate the short circuit to a specific physical area. Sometimes this involves cutting traces on a (DIY) PCB. In the case of a commercially made PCB like the ESP board you're using, I would not expect the problem to be caused on the board itself. It's likely a part of your own add-ons that poses the problem. It can be something silly as a blob of solder somewhere or a tiny strand of wire sticking out the wrong way, causing a short.
I removed every connections near the pins of 3.3v and gnd and issue was still there
I'm sorry, I can't see what you're doing.
As I said, you should be able to isolate the problem to a specific area/spot.
use female headers for such trials, go for a permanent soldering once your project is complete
Stick to female headers if you want to be able to switch out devboards if needed.