Around 2008-ish Sparkfun started selling their FTDI basic breakout. These were great! And really helped me move beyond having a full Arduino Uno inside of every project. Fast forward to today. ESP's ...

RX of Programmer to RX of ESP and TX to TX (Which is a bit confusing to be honest) The TagConnect connector follows my own standard which I've created for my devices using an ESP8266. The device ...

Epi C3 pinout diagram. The board has Arduino firmware preinstalled and preset with the ESP32-C3 dev module. The GitHub repository for the design files includes specifications for a variant with a U.FL ...

USB – 1x USB Type-C port for power and programming via CH9102 USB to TTL chip; Expansion – 2.54mm pitch headers with ADC, 13x 14x GPIO, SPI, UART, I2C, I2S, PWM, RMT, DMA, USB Serial, TWAI; ... The ...

One is as General purpose Input/output and other is to enable Programming mode of ESP-01. GPIO2: This is a General purpose Input/output pin. Connection of ESP-01 with CP2102 module: The figure below ...