TTL to RS485 Converter 3.3V/5.0V Hardware Automatic Control Converter Module For Arduino for Arduino AVR – KSH 400 at HIMASTORES Mombasa – best electronics in Kenya
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TTL to RS485 Converter 3.3V/5.0V Hardware Automatic Control Converter Module For Arduino for Arduino AVR

SKU: HMJ785 Category: HIMA electronics
KSH 400.00
Out of Stock

Product Description

TTL to RS485 Converter 3.3V/5.0V Hardware Automatic Control Module

Automatic Control Converter for Arduino and AVR Projects

This TTL to RS485 converter module features hardware automatic control for bidirectional communication, supporting both 3.3V and 5.0V logic levels for Arduino and AVR development.

Automatic Direction Control - No manual pin control needed
Dual Voltage Support - Works with 3.3V and 5V systems
Use twistedpair cable for longdistance communication
Match baud rate with connected devices
Do not exceed 5.5V on logic input

Technical Specifications

ParameterValue
Logic Voltage3.3V to 5V
InterfaceTTL and RS485
Data Rate1200 to 115200 bps
CommunicationHalf-duplex
Control MethodHardware automatic
DistanceUp to 1200 meters
ProtectionTVS and overcurrent

= Key Features =

Automatic Flow Control - No software pin toggling

Broad Voltage Support - Compatible with 3.3V and 5V MCUs

Protection Circuits - TVS diode and overcurrent protection

Terminal Connections - Screw terminals for RS485

LED Indicators - Power and data activity

= Applications =

  1. Long-distance sensor networks
  2. Industrial automation
  3. Arduino and AVR interfacing
  4. Building management systems
  5. Data acquisition projects
  6. RS485 bus systems
Plug and Play - No configuration needed
Versatile - Works with most development boards

√ Screw terminals for RS485 connection

√ Hardware control included

√ Indicator LEDs for status

Connection Guide

TTL side wiring:

  • VCC: 3.3V or 5V power
  • GND: Ground
  • TX: Connect to MCU TX
  • RX: Connect to MCU RX

RS485 side wiring:

  • A: Positive differential line
  • B: Negative differential line
  • GND: Shield/ground (optional)
Connect TX to RX and RX to TX
Use 120Ω termination for long lines
Do not connect RS485 lines reversed
Use shielded cable in noisy environments

Operation Notes

The hardware automatic control:

  • Detects when data is being transmitted
  • Switches direction automatically
  • No delay in direction switching
  • Works with any baud rate

Simple Operation - No special code needed

Reliable Switching Hardwarebased control

Works with all Arduino boards
Supports standard UART libraries

√ Compatible with SoftwareSerial

√ Works with ESP32 and ESP8266

√ Available in bulk quantities

Troubleshooting

No communication:

  • Check voltage supply
  • Verify wiring connections
  • Avoid reversed RS485 lines

Data errors:

  • Check baud rate matching
  • Use proper termination
  • Avoid long unstwisted wires