Questions tagged [transceiver]
Both [tag:transmitter] or [tag:receiver]
139
questions
1
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0answers
20 views
USB transceiver or Boot loader [duplicate]
I am doing one hobby project, using STM32F103R8T6 Micro controller for my project, now I am using JTAG pins to program the controller. I will keep on modifying the firmware for my project, in this ...
1
vote
1answer
38 views
USB transceiver helps me to update firmware program to microcontroller via USB interface?
I am doing one hobby project, using STM32F103R8T6 Micro controller for my project, I would like to use USB transceiver for this micro controller, does this helps me to update my firmware program ...
0
votes
0answers
24 views
What will be the simplest RF ID transponder circuit that responds with a specific 4 bit code when it receives a specific 4 bit code? [closed]
What will be the simplest RF ID transponder circuit that responds with a specific 4 bit code when it receives a specific 4 bit code?
I do not want to use a dedicated integrated circuit, it is not ...
2
votes
2answers
61 views
Isolated CAN transceivers as a CAN bus extender
I am designing a system to 'hack' into a CAN bus. My first idea was to split the target CAN bus, terminating both ends into isolated CAN transceivers, and use a MCU to pass packets between the buses ...
7
votes
2answers
1k views
How can I fix a dry solder pin in a BGA package?
I am facing problem in a 16-bit transceiver chip, 74LVCHR16245AZQLR, which is a 56-pin BGA package.
Its one data pin is not working as expected while all other pins are working OK. The problem pin is ...
0
votes
1answer
24 views
CAN transceiver Vref connection
I am using the TI SN65HVD230DR CAN transceiver on two separate CAN buses between three microcontrollers (MCUs) -- two are on the same board, and one is off-board. This transceiver includes a Vref pin:...
1
vote
2answers
63 views
What is the purpose of R1, R2 in this ESD protection circuit
What is the purpose of R1 and R2 in this circuit? Is it required? I have seen in documents like https://www.onsemi.com/pub/Collateral/AND8169-D.PDF where no resistors are shown in the example ...
0
votes
3answers
16 views
On SN65HVD1780 are external pullup and pulldowns
On transceiver SN65HVD1780 are external pullup and pulldowns required on A,B,DE,RE,D,R lines? The datasheet mentions that the part has internal pullups and pulldowns but it's not clear if external ...
0
votes
1answer
43 views
Multiplexing a 16 button keypad to an 8 button remote control module
I am wanting to multiplex a 16 button keypad to an 8 button RC transceiver so that I can have remote control over 16 functions instead of the standard 8.
The transceiver I am using is the 900MHz ...
1
vote
1answer
50 views
Should I take precautions when using different CAN transceivers on the same bus?
What are the precautions I should be aware of when using different transceivers on a CAN bus?
What I can think of:
They neeed to operate at the same voltage (on ...
1
vote
2answers
101 views
Rs485 to UART convension
I need to send data from one PIC to another PIC by using RS485. As a protocol I use UART. However, I cannot be sure about RS485 transceiver and its circuit. I will be able to supply 5 V and according ...
0
votes
0answers
21 views
Transceiver IC SN74LV245A at different voltage levels pull up resistor require for current improvement
I've gone through datasheet of IC Page number 12 Figure 5 shows typical application of IC which is 5 to 3.3V compatibility.
In my design My sensor Output is 1.5V to 2.2V so we're planning to have ...
0
votes
2answers
48 views
Integrating IC transceivers on a pcb
I have a question about the difference between transceiver modules and transceiver ICs.
I want to integrate a 2.4GHz transceiver IC - nRF24L01+ onto a PCB instead of using the NRF 24l01+ module.
...
0
votes
1answer
27 views
SN65HVD3x (RS485 Driver) - Termination resistor
I want to use the SN65HVD31DR to connect two microcontrollers together. The connecting cable has an impedance of Z0 = 80Ω. According to the data sheet it is recommended to terminate the connection ...
2
votes
1answer
181 views
Sub 1 GHz communication - long range at 500kbps. Is my range estimate roughly correct?
When researching long range medium bitrate RF comms I came across the TI range. The TI CC1201 transceiver claims -97dBm sensitivity at 500-1000kbps. If the system is on the 868MHz band which is ...
0
votes
2answers
57 views
MAX232 vs TRS202EC Line Drivers
I have used MAX232 as UART serial line driver using 5V power supply. Now I have come across TRS202 chip in a circuit. It also run with 5V power supply. Does this chip has some special difference or is ...
0
votes
2answers
147 views
How to decrease nrf24l01 transceiver range?
I've just got my Nrf24l01 but then I found out that the working signal range for the module is 100m and above. Our real intention for the module is to let the nrf24l01(Receiver) out of range for about ...
1
vote
1answer
54 views
Using a Bluetooth receiver with 3.5mm jack headset [closed]
For the past 1/2 year I have been using a cordless Bluetooth headset (this one) connected with my motorcycle Garmin GPS device. While connected the device will not allow me to control the volume over ...
0
votes
1answer
42 views
Can I make my cellphone a 3.5mm jack bluetooth transceiver? [closed]
I want to hear sound from my TV using my Beats Solo3 wireless headphones the problem is that the TV doesn't have a bluetooth transmitter (or any wireless connectivity) it has USB and 3.5mm headphone ...
1
vote
1answer
68 views
To Fail-Safe or not Fail-Safe on RS485/422 Transceiver
I'm stuck on a PCB design issue.
I'm designing a new PCB (Daughter board) that will plug (via DB15-F to DB15-M) onto another PCB (existing Mother board) and the design intent is to take (from the ...
-1
votes
2answers
80 views
Half-duplex wireless: Is a tuned antenna more important for the transmitter or the receiver?
I intend for this to be a general/conceptual question that could apply to any wireless communication hardware, however I will use a specific example to talk about.
Let's consider the nRF24L01. (...
0
votes
1answer
70 views
DMX receiver 40V signal
I am creating a DMX receiver circuit. The dmx that is received from a controller (USB DMX dongle) is converted via a transceiver (SN75176BP) to a signal which can be understood by an ATMEGA328P.
I ...
0
votes
0answers
44 views
Equalisation and Pre-emphasis for high speed transceivers
How can we see the effect of equalisation and pre-emphasis in simulation?
Like equalisation is used to overcome the losses which may be because of :
Signal Attenuation
Reflections
Intra-pair ...
0
votes
1answer
61 views
How to model a physical channel using verilog?
I don't have access to high speed transceivers FPGA. So i wish to model the channel of high speed transceivers which is not error free so that i can test my codes if they are working fine or not.
Is ...
0
votes
1answer
85 views
LIN Network without Transceiver (for testing)
My task is to implement LIN network on SPC560P microcontroller. This microcontroller does not have builtin LIN-transceiver, so it provides TX and RX pins. I know Lin network only has one LIN wire, but ...
0
votes
2answers
24 views
difference between max3387ecug+ and max3387ecug+t
can I know what the difference is between MAX3387ECUG+ and MAX3387ECUG+T, the MAXIM datasheet doesn't seem to point the difference.
2
votes
5answers
625 views
Wirelessly connect several DS18B20 across a house
I am planning on reading temperature data form across my home using several DS18B20s and sending all of the data to a raspberry pi. I have already managed to interpret data from one sensor directly ...
2
votes
0answers
150 views
nRF24L01+ module channel sensitivity and directivity
I want to start a project where I distribute many nRF24L01+ modules across the house. I am pretty sure someone has done that before. But before I wanted to begin I evaluated the modules using two ...
3
votes
1answer
763 views
Simple CAN bus design, communication issues
I am trying to get some simple communication between two boards that I've designed with an ATmega328P microcontroller and MCP2515/MCP2551 combination.
The design is as follows:
I have both ends ...
-1
votes
1answer
33 views
wirelessHD using with FPGA
I going to make a system to transfer data between 2 FPGAs wirelessly with high rate.
I found that wirelessHD method can do this, now what is the required hardware to establish such system?
0
votes
1answer
80 views
How can remove the spikes in common mode rail?
Following is the circuit I am working with.
Intended output across R7 is (60 Ohm resistor) is:
More than 2 mA current for logic high (5 V) input V1
Less than 0.1 mA for logic low (0 V) input V1
...
1
vote
1answer
160 views
Fastest working Wireless communication method between two devices
I attempted to ask this question on the network engineering forum but the mods there think superuser.com is a better place for it, but when I posted there, they think here is the best place for this ...
1
vote
2answers
243 views
A Single Antenna for Multiple Sub-GHz Receivers
I am thinking about making an inexpensive LoRa geteway by combining eight single-channel RFM95W 915 MHz transceivers. These would just work as receivers, and I would have a 9th one working separately ...
1
vote
1answer
143 views
Soldering SMA to a Transceiver
I'm a noob in Electronics. I want to use this module that doesn't have SMA or u-fl connector. my Question is how can I use SMA or u-fl connector with this kind of modules or how can I solder them the ...
0
votes
2answers
286 views
Hack fibre optic transceiver for wireless data link
I'm brainstorming ways to implement a high speed wireless laser data link without the exorbitant cost.
Would it be possible to take a standard SFP transceiver module and use that across free space ...
0
votes
1answer
523 views
Antenna for qrp pixie 2 [closed]
I recently set up a qrp pixie 2 transceiver i purchased from Aliexpress.I want to use it for sending morse code,and listening to the shortwave transmissions.and i want to learn more about it.so i ...
0
votes
2answers
157 views
Building a (toy) Ghost Detector
I'd like to build a ghost detector. I'm only just beginning the design stage, and thought I'd reach out for some suggestions.
Receiver: I'm planning to end up with a handheld device with an analog ...
0
votes
4answers
186 views
Multilateration with TOA using lowcost transceivers (like NRF24L01) and uCs
My problem is the following, I would like to localize an object (main node) via multilateration using a wireless sensor network of 4 nodes with less than half a meter accuracy. The equations are ...
1
vote
1answer
139 views
Does 2g/3g rf receive circuit path work for 4g if they are in the same band?
I am wondering that if the rf receive path for gsm/wcdma can be used to receive lte fdd signals? provided that gsm/wcdma/lte are in the same band e.g. band8 downlink frequency 925-960mhz, and the ...
0
votes
0answers
45 views
AVR + IEEE 802.15.4 (<1GHz) potential transceivers
I'd appreciate it if someone could offer a couple of suggestions about pairing up an AVR MCU (I'm thinking about using the MEGA162V-8PU ) to a general ISM < 1GHz (transceiver), and the ATTINY85 on ...
0
votes
1answer
138 views
How to decrease range of RF transceiver
I'm working on a solution for 2 devices to communicate with each other over a very short range. A user will be wearing device #1 around their wrist, and in that same hand will be holding device #2. ...
1
vote
2answers
186 views
RF Isolator or Circulator for Commercial Product
Circulator and specifically isolator are used in microwave system to prevent unmatch load damage the transmitter.
As circulator that I seen are very bulky I'm started to think how commercial product ...
0
votes
1answer
152 views
Smaller ultrasonic transceiver
I am a beginner working on my Arduino-based proximity sensor array project, like this one. I have already tested the functionality with single HC-SR04 transmitter/receiver and now I would like to ...
1
vote
2answers
123 views
What technology to use to send data/Ethernet (about 128 kbps) over copper cable (4km)?
What thechnologies can i use to send data/ethernet (w/ a symmetrical traffic throuput of about 128kbps) over copper cable (4km)?
1)SHDSL would be an option !!(but I couldn't find any chip with ...
0
votes
1answer
170 views
Many Data from Different Transmitters to Single Receiver Simultaneously
In my Project transmitters constantly transmit some data. I want to receive all the data in single receiver at the same time. I searched about RF transmitter and receiver. But Many to One not possible ...
1
vote
3answers
586 views
Identify Symbols on Circuit Diagrams for VHF Radio Build
I found these circuit diagrams for VHF transceiver online, and am having trouble recognizing a number of the symbols. Would you please help me identify the boxed symbols?
Here's what I've got so far:
...
0
votes
1answer
126 views
nrf24l01 transceiver on altera board de2-115 [closed]
I'm trying to use the nrf24l01 transceiver on altera board de2-115. I would like to send a signal from the altera board using this spi module to another spi module and use the spi module on the ...
3
votes
1answer
683 views
Current consumption for RS485 transceivers?
I am building a prototype that uses a RS485 BUS to communicate many devices and current consumption is a crucial part in this project. In order to set the communication up, I have been looking at ...
1
vote
2answers
305 views
Optional pump capacitor connection on RS232 line driver/receiver Chip
Why is it on RS232 line drivers/receivers such as ICL3222, MAX3222, ADM3222, etc.. the C3 capacitor can be connected either to GND or Vcc?.
There's nothing on the datasheet regarding the differences ...
0
votes
0answers
225 views
FSK Bandpass Filters for 900 MHz
I'm attempting to design a basic FSK transceiver (architecture shown below) using only discrete components (transistors, diodes, resistors, etc). My idea was to separate the two binary frequency ...
