UART & USB Converters Philippines: FTDI, CP2102, CH340 & Adapters | Circuitrocks
UART, Serial & USB Communication — FTDI, CP2102, CH340, TTL & USB Bridges
Interface microcontrollers, sensors, and computers easily using our UART, serial, and USB communication modules. These include FTDI programmers, CP2102/CH340 converters, USB-to-TTL adapters, and UART breakout boards for Arduino, ESP8266, ESP32, Raspberry Pi, and embedded systems.
USB to UART • FTDI • CP2102 • CH340 • TTL Adapters • Debug Tools
Why shop UART modules here
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Trusted chips: FTDI, CP2102, CH340, and industry-standard bridges
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Beginner-friendly: clean pin labels, auto-reset, 3.3V/5V selectable
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PH support: driver assistance & debugging guidance
Popular uses
- Programming Arduino Pro Mini, ESP8266, ESP32
- Serial debugging & logic monitoring
- Connecting computers to UART-based sensors/modules
- Flashing firmware / bootloader installation
- Level shifting & safe communication
Communication categories
Serial / TTL Modules
- TTL converters
- Bidirectional UART level shifters
- UART breakout boards for debugging
USB Tools & Debugging
- USB logic converters
- Signal testers & analyzers
- Auto-reset adapters for ESP boards
Tip: If an ESP8266/ESP32 is not detected by your PC, try a CP2102 or CH340 driver reinstall, or use an FTDI board with auto-reset pins.
UART module chooser (quick guide)
| Need |
Best choice |
Notes |
| Programming ESP8266/ESP32 |
CP2102 or CH340
|
Reliable, low-cost, widely supported drivers. |
| Best compatibility & stability |
FTDI FT232RL |
Premium driver support; great for Pro Mini & older boards. |
| Debugging serial output |
USB-TTL adapters |
Use for serial monitor logs & firmware flashing. |
| 3.3V/5V safe communication |
TTL level shifter |
Prevents damage to sensitive 3.3V devices. |
| Drivers failing or unstable |
FTDI board |
Most consistent among USB-to-UART chips. |
Choose based on chip compatibility, voltage level, and required auto-reset pins.
Starter bundles
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ESP Flashing Kit: FTDI/CP2102 + USB cable + jumper wires
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Pro Mini Programming Kit: FTDI + 3.3V/5V switching
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Debugging Kit: USB-TTL + logic analyzer
FAQ
Which chip is best for programming ESP8266/ESP32?
CP2102 and CH340 modules work best; FTDI is also supported but may require wiring adjustments.
Why does my USB-UART adapter not show up?
Install the correct driver (FTDI/CP2102/CH340). Try a different cable—many USB cables are charge-only.
Is 3.3V/5V switching important?
Yes—using the wrong voltage may damage your ESP modules or microcontrollers.
Do you ship nationwide?
Yes—fast shipping across the Philippines with same-day processing for in-stock items.
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