TTL to RS485 Converter 3.3V/5.0V Hardware Automatic Control Converter Module For Arduino for Arduino AVR – KSH 400 at HIMA TRONICS Mombasa – Top quality HIMA electronics. Best electronics in Kenya. Shop now for Arduino, ESP32, sensors and IoT devices.
Home / HIMA electronics / TTL to RS485 Converter 3.3V/5.0V Hardware Automatic Control Converter Module For Arduino for Arduino AVR

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
Inquire
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