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CP2104
CP2104 USB to UART with RTS
CAD$3.49
UART module for ESP-01
CP2102 USB to UART for ESP MCUs
CAD$9.49
FTDI USB to UART Converter with Break Out
Out of Stock
CAD$5.89
FTDI USB to UART Converter
CAD$3.89
1A TP4056 mini-USB Battery Charger
Out of Stock
CAD$2.99
CP2104
CP2104 (CP2104)
USB UART with both DTR and RTS for BreadBoarding ESPs.
Jumper selectable 3V3 or +5V

Note:  this is a rev. 0.9 proto board so it is not pretty and the LEDs on the RxD/TxD do not light - they are on GPIOs of the 2104 chip so this may be a software issue. The female header is designed to connect a USB breakout board so you can choose the type of USB connector.... see "Related Products" tab to the right.
CP2104 USB to UART with RTS
CAD$3.49
UART module for ESP-01
CP2102 ESP (CP2102U-ESP)
USB UART with both DTR and RTS for ESP MCUs.  The DTR and RTS pins have jumper seletable circuitry to make for smooth uploading to ESPs without having to jump up and down on the buttons or yank jumpers in and out.  DTR goes to Reset and RTS goes to GPIO 0.

Jumpers are provided to deselect ESP mode to allow use of the DTR as Reset for regular AVR MCUs.

The internal regulator of the CP2102 is not really robust enough for larger ESPs like the ESP32-S3...  so this board includes a separate 850mA  3V3 regulator.

Jumper selectable 3V3 or +5V Vcc

micro USB..
CP2102 USB to UART for ESP MCUs
CAD$9.49
FTDI Break Out USB to UART (FTDI-BO)
  • Connect to your Pi or Arduino Serial Port via USB


FTDI USB to UART Converter with Break Out
Out of Stock
CAD$5.89
FTDI USB to UART (FTDI)
  • Connect to your Pi or Arduino Serial Port via USB
  • Connect the 3 female jumper connectors to your development board's RX, TX and GND pins
  • Then use Putty to communicate with the corresponding COM port such as /dev/ttyUSB0


FTDI USB to UART Converter
CAD$3.89
TP4056 Lithium Charger (TP4056)
1A TP4056 mini-USB Li-Ion Battery Charger/Protector Module Note that this is a Mini-USB Module
1A TP4056 mini-USB Battery Charger
Out of Stock
CAD$2.99
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