On the ESP32-C3-Mini-DevKitM1 page, there's a diagram that notes that pin 19 has a weak USB pullup, though I don't believe it's related to the CP2101. That led me to another forum post (https://esp32.com/viewtopic.php?t=27210) that mentioned that the pullup on GPIO19 has a number of bits on it that ...

I just spent quite a bit of time figuring out why I couldn't upload to my own boards, so I appreciate what you're experiencing. The ESP32-C3-Mini modules do not need to be preprogrammed. You can write firmware to them directly using esptool.py I programmed mine using the Arduino IDE, which uses espt...

When you do not set GPIO9 to 0, boot number is d, right? So it is confusing, in this mode, GPIO8 is recognised as high, why when you pull GPIO9 to low, GPIO8 is low? Could you check if connection of pullup at GPIO8 is soldered well? Maybe you could resolder? And if your power ramp is very slow? Thi...

I have been trying to get my ESP32-C3 (In this case, an ESP32-C3-MINI-1) into a state where I can program it. I have unfortunately been unsuccessful. I have made a custom board for the ESP32-C3-Mini-1, and connecting it to a Serial port, I can get the device into seemingly one of two boot states: If...

I have been trying to solve an issue with my custom PCBs when trying to program an ESP32-C3-Mini. I wanted to see if I could program the device on one of the DevKitM-1 boards that I have, so I used a hot air rework station to reflow the solder to remove the onboard ESP32-C3-Mini. Regardless of the t...

Thanks Felix, You can include ESP library headers in Arduino and they will reference the code library. I have attempted to clear the appropriate flag, without success. This code tries to display the pulldown bit and then set it, and display it again, but it doesn't seem to set when I try to do so. S...

Hello all, I'm working on a project with an ESP32-C3-DevKit-M1, where I'm using GPIO19 for an input button. My design had the button connected to GPIO19 and VCC (3.3v from module). #define rightButtonPin 19 #define leftButtonPin 2 void setup() { pinMode(rightButtonPin, INPUT_PULLDOWN); pinMode(leftB...