NEX ROBOTICS 434 MHz Manual Download Page 2

                                                                                            434 / 315 MHz 8 Channel Secure Remote Control
 

 

NEX Robotics Pvt. Ltd.  

 

www.nex-robotics.com

   

 

 

Note:

  

 

You have to solder pad to select track antenna or a wire antenna before use as 
described in the product manual before using remote control. 

 

For perfect remote control operation make sure that two 0.1uF capacitors are 
connected to the motor terminals with respect to motor body and robot chassis and 
motor body is grounded. 

 

Make sure that robot has adequate power available (at least twice of the stall 
current of all the motors combined) to avoid interference caused due to power 
surges in the supply. 

 

Specifications: 
 

Transmitter and Reciver module:

 

434 MHz ASK Transceiver Module

 

 
Transmitter: 

 

Frequency: 434 / 315MHz 

 

Power: 7V to 12V DC, 9V battery can also be used. 

 

Number of control inputs: 8 (arranged in 4+4 user friendly configuration for left 
and right hand) 

 

Antenna: User selectable PCB track antenna or quarter wavelength wire antenna 

 

Encoder: HT640 (8 command output and 10 bit security address) 

 

Reverse polarity protection 

 

Onboard low drop voltage regulator 

 

Power switch and Power indicator LED 

 

Size: 12.5cm x 5cm 

 

Receiver: 

 

Frequency: 434 / 315MHz 

 

Power: 7V to 12V DC, 9V battery can also be used. 

 

Outputs: 8, 5V, TTL / CMOS level, Buffered with IC 74HC245 

 

8 LEDs displaying status of the commands (can be disabled by removing jumper) 

 

Antenna: User selectable PCB track antenna or quarter wavelength wire antenna 

 

Decoder: HT648 (8 command output and 10 bit security address) 

 

Valid data confirmation output for customization 

 

Reverse polarity protection 

 

Onboard low drop voltage regulator 

 

Power switch and Power indicator LED 

 

Size: 5.6cm x 4.3cm 

 

Output data type: 

 

Outputs: 8, 5V, TTL / CMOS level, Buffered with IC 74HC245 

 

Output gives logic 1 till key of the transmitter is pressed 

 

You can transmit multiple commands at the same time by simultaneously pressing 
multiple keys. Which also means you can use few keys as shift key and probably 
control up to 255 devices. 

 

Outputs are non latched types. I.E. outputs will remain logic 1 till the remote 
transmitter’s key is pressed. 

Summary of Contents for 434 MHz

Page 1: ...is remote is based on 434 MHz ASK Transceiver Module and HT640 and HT648 encoder and decoders which can be used for transmitting 8 commands with 10bit security address setting You can transmit multipl...

Page 2: ...tenna Encoder HT640 8 command output and 10 bit security address Reverse polarity protection Onboard low drop voltage regulator Power switch and Power indicator LED Size 12 5cm x 5cm Receiver Frequenc...

Page 3: ...e logic 1 To power up the remote give 7 to 12V to the power connector and turn on the power switch You can also power remote transmitter using 9V battery Make sure that security bit settings on transm...

Page 4: ...have to short pad as shown in figure 3 For longer range you can solder wire on the pad marked as ANT Robot can also be controlled by PC by soldering DB25 male printer port connector at the bottom sid...

Page 5: ...Make sure that security bit settings on transmitter and reciver are identical All the security bits of the remote control transmitter and reciver are factory set at logic 0 or 1 Low drop voltage regul...

Page 6: ...botics com Figure 5 Selecting track antenna wire antenna on the remote receiver Note For more information on the remote control operation refer to the HT640 and HT648 datasheets on the product page Sc...

Page 7: ...ns org licenses by nc sa 3 0 legalcode Product s electronics is static sensitive Use the product in static free environment Read the user manuals completely before start using this product Recycling A...

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