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0
votes
1answer
45 views

USB to Serial Disappears from Windows 7 Device Manager when Tx of board connects to Rx of usb-to-serial converter

I have two different usb to serial converters. Both have 5 pins with 3v3, txd, rxd, gnd, 5v. In the past I have used them to connect to raspberry pis and arduinos successfully. I have a board ...
0
votes
0answers
42 views

CORTEX-M LPCOPEN USB-VCOM basics - proper way to build a simple FSM

I'm working on a project involving the LPC4370 mcu (LPC link 2 eval board) and Matlab. I need my embedded code to be user-reconfigurable from matlab: the user sends a command, the mcu replies. I'm ...
0
votes
0answers
19 views

Smart Charger (Tenergy TB-6AC) UART/USB interface

I have an old smart charger (Tenergy TB-6AC) which boasts the ability to interface with my computer. Upon further research, I have found that the software is no longer supported and no where to be ...
0
votes
0answers
39 views

No data being displayed from ADC0804 in program using FT232RL

I'm attempting to read analogue voltage from a potentiometer by converting it into digital using ADC0804 and then passing the data onto y pc using FT232RL. As it stands the ADC0804 circuit is working ...
6
votes
4answers
2k views

Can a USB port passively 'listen only'?

I have a small dedicated controller built around an Arduino that accepts commands from a PC over USB (serial). The communication is one-way -- the controller never sends data back to the PC. Now I ...
4
votes
1answer
116 views

How do USB to serial adapters work?

I'd like to know how a USB to serial adapter (such as the FTDI FT232RL chip) works. The way I think it does is the following: Picture a system composed of a MCU, a USB to serial adapter and the PC ...
1
vote
3answers
374 views

Direct connection of UART serial port to USB type-C

in my project I have a USB type-C 3.1 2nd Generation (24 pins), which should provide 5V to a charge battery/battery system. In addition, there is a uC powered at 3,3V where the maximum voltage on GPIO ...
0
votes
1answer
58 views

How to Update firmware of microcontroller using DALI lines of a DALI slave module?

I have developed a DALI slave module with PIC 16F18326 microcontroller. Now, I want to make a Bootloader for this PIC. But the problem is, I don't have a serial communication or USB connection with ...
1
vote
1answer
72 views

ATmega328P running on 3.3V using a CH340G as serial to USB interface

I'm trying to use a CH340G chip with an ATmega328P that is running on 3.3V to have a simple serial to USB interface. The available datasheets for this chip seem to be very minimal so I've tried ...
0
votes
2answers
89 views

Analog Potentiometer Output to USB Serial [closed]

I‘m working on a project which has several switches and potentiometers that will be used to control parameters in software via (e.g.) MIDI and would like to know how to get the pots set up without ...
1
vote
1answer
73 views

Is the following USB connection possible: Host USB to converted to serial (FTDI) and then converted back to USB (FTDI)

I am trying to connect a host USB device on one board to an endpoint USB device on another board, but I am required to send the link between the two devices as a serial (UART) connection between the ...
0
votes
1answer
22 views

Variations in RFID USB Serial reader detection distance by connected device

I have a RFID reader that sends the TAG information over USB serial. I have had some troubles with it in a product where the detection success rate changes alot depending on what the USB RFID tag is ...
0
votes
3answers
577 views

How to find out whether serial standard is RS232 or TTL when stated as “serial(RS232/TTL)”

I am recently moving from C programming into automation engineering. I have learned about RS232 and TTL standards, and I understand that they are based on the same concept of serial communication, ...
-2
votes
1answer
207 views

Using Adafruit Trinket M0 (SAMD21) as a USB to Serial converter

I wanted to know if it is possible to use SAMD21 as a USB to Serial converter like the usual FTDI chips ? If yes could you please point how to achieve that. I believe that Adafruit Trinket was used ...
0
votes
1answer
148 views

Enabling and disabling serial device connected to the Arduino HardwareSerial by software

I want to use the hardware serial port (pin 0 RX and 1 TX) to connect a MAX485 IC. Internally these pins are also connected to the onboard USB to serial converter microcontroller which is used to ...
-4
votes
2answers
1k views

What is difference between USB and TTL? [closed]

I have one question about USB and TTL. Both USB and TTL works on the same voltage range (0 to +5 V), both are serial protocols. From my point of view, they are the same. Why then we have USB to TTL ...
0
votes
2answers
156 views

CP2102N Not Working

Solution: Cable didn't have data lines... I have a custom board with a CP2102N on it to go from 3.3V UART to USB via a virtual COM port. I followed the data sheet for the design, as well as ...
1
vote
2answers
259 views

FT232HL FTDI consecutive SPI bytes delay problem

I have a problem with the FT232HL FTDI ic. Windows application send data to the chip via USB and the chip send the data out with one SPI channel. I did check with a logic analyser, the bytes are ...
-4
votes
3answers
1k views

What is a FTDI chip? How does USB communicate with Arduino?

What is a FTDI chip? Is this used in Arduino to communicate to the laptop? I think that the voltage levels are different on USB and Arduino?
0
votes
0answers
256 views

How does PC recognizes Attiny85 as “serial device” through USB connection and assign it COM port?

I'm pretty sure my question is not well put so I will try to explain it little bit more. Let's say I have a Attiny85 without any firmware. What kind of firmware do I need to flash Attiny with, in ...
0
votes
1answer
108 views

Several MIDI over USB Device

I'm looking at creating a "specialized" MIDI over USB device for a project I'm working on and my requirements have gone beyond that of the Arduino/Pi/etc, due to limited I/O. I am very much a beginner ...
0
votes
0answers
47 views

USB serial enumeration with different power source

I am working on an evaluation board that is powered off of a micro-b USB port. This also serves as a serial port (through an FTDI chip). There is a jumper that allows to choose to power the system ...
0
votes
1answer
64 views

Talking to Logic Motion Controller (LMC 300) via USB

I have a Nilan Compact-P heating system in my home and it has a USB connector. When I plug it in my Windows Laptop automatically the driver for "lmc 300" is installed and a COM Port opens up. This is ...
0
votes
1answer
108 views

Trying to program a DSD TECH SH-A10 iBeacon with Sparkfun FTDI Basic [closed]

I ordered some fairly random iBeacon (DSD TECH SH-A10), and I didn't realize that its configuration software is Windows only (http://www.dsdtech-global.com/2017/11/dsd-tech-bluetooth-config-tool.html),...
0
votes
1answer
54 views

convert from serial modbus to ethernet through plc?

can I use a plc as a converter to convert from serial modbus(RS485) to either ethernet or usb using code ? , the plc is modicon m340 without communication module but the cpu has serial port , ethernet ...
2
votes
3answers
275 views

How can I get 1-10MB/s of debugging data to and from a dev board?

Here's the fundamental problem I have: I'm looking at a dev board for, say, a TI/AD/Microchip microprocessor or DSP. This is long before a full product design; we're talking proof-of-concept work here....
0
votes
2answers
37 views

Multiple small schemes in one [duplicate]

Hello I wanted to build this serial to usb converter with ft323R, but I don't understand the small marked part on the left bottom. I found the same thing in other schematics too. I know where to ...
0
votes
1answer
798 views

Serial Over USB Reading With GNU Octave Problems

I am having difficulty reading a USB virtual comm port into GNU Octave, and there are some bizarre goings-on that I would like some input on. Currently I have a USB CDC virtual comm port device that ...
1
vote
3answers
7k views

Extract 12V from USB port

I wish to drive a 12V stepper motor with a USB port as the source of power. However, the USB port only outputs only 5V as output. This will obviously not work. I had thought up of several ways to ...
3
votes
1answer
1k views

FTDI chip returns descriptor of unknown device

I would like to debug the kernel of my nexus 5 and I sent to a fab the design for the debu cable that uses internally a FTDI chip that creates a ...
0
votes
2answers
143 views

Sending data from MCU to PC with 1.5 Mbaud using FT232R

I have an issue using FT232R to communicate with my PC. I have two bytes of data that I need to transfer every 50 us. The frame size is 20 bits, including two start and stop bits for each byte. I've ...
0
votes
1answer
485 views

Connecting Garmin 18x 5hz GPS to PC via Serial TTL-232 USB cable

I want to connect Garmin 18x 5hz GPS (this) to computer via FTDI Serial TTL-232 USB Cable (this). But once I try to update the GPS via Garmin updater, I get framing error. "A communications error has ...
1
vote
4answers
931 views

Serial Monitoring of DB25 Parallel Port Data

I would like to examine the string of data being outputted from an industrial equipment's DB25 connector that is being sent to a printer. I was thinking I need to convert this 25 pin parallel ...
1
vote
2answers
322 views

How, could hardware write protect be implemented for flash media?

I come from a software background, but feel this is a hardware/electronics question. Looking for a way to hardware-write-protect on flash media, I bought an SDHC card (with a tiny switch labelled "...
0
votes
3answers
160 views

How to troubleshoot non-working RS232 to USB connection

I have bought a RS232 inclinometer and a FTDI USB to RS232 cable. The inclinometer spec sheets states: RS232 full duplex communiction Supply voltage 4.9 - 15V Wires: Red: +ve Blue: ground Yellow: ...
1
vote
2answers
296 views

Android ATtiny arbitrary data communication over USB [closed]

I have an ATtiny13a running code at 9.6 MHz (internal oscillator) for single pin Tx Rx half-duplex serial port at 115200 baud rate using a lib which I found online Using FTDI 232RL or BT HC-06 in ...
-2
votes
1answer
652 views

Differences between isolated and non isolated usb to RS485/RS232 converters [closed]

What are the differences between isolated and non isolated usb to RS485/RS232 converters
1
vote
4answers
3k views

USB to TTL communication problem

I'm trying to connect a device to my laptop using a TTL to USB converter like this one but it doesn't works so I tried the following configuration (USB to Serial, RS232 to TTL and then to the ...
0
votes
1answer
353 views

USB Full-Speed driver's effect on transfer speed

I am experiencing problems with USB communications which seems driver related. My setup involves an embedded device set up as a virtual com port (CDC/ACM) with which I communicate over USB. The ...
-1
votes
3answers
235 views

Confused about how microcontroller board and computer communicate

I recently got myself FRDM K64F board and got myself occupied with the following questions: Does the compiled hex code i send to my board has to go to the UART chip prior going into ...
0
votes
1answer
364 views

Raspberry Pi 2 to arduino RF Serial link with USB to Serial TTL Converter

This is my first question here. I want to have a communication channel which will use a 433 MHz RF TX-RX pair. I want to use a Raspberry Pi 2 as a transmitter and an Arduino Mega as a receiver. Is it ...
0
votes
1answer
218 views

10Mbs USB to serial communication

I want to transfer data from a full duplex serial device (TTL) to the PC. The data rate is 10Mbs , i am investigating potential solution. I can add a level converter like max232. I have 2 questions: ...
0
votes
2answers
3k views

STM32F7 Discovery USB CDC using CubeMX [closed]

I've created a project in CubeMX for my F7 Discovery. I followed instructions form here. However, in my Device Manager on Windows nothing appears. When I used precompiled code from link I was assured ...
1
vote
1answer
809 views

Windows 10 updates drivers for FTDI

I have one question about the following products: foca-v2-2-ft232rl-tiny-breakout-usb-to-serial-uart sparkfun-ftdi-basic-breakout-3-3v I bought them last year and after time without using them I ...
1
vote
1answer
923 views

Chaining Multiple USB Hub Controllers for Serial Interfacing

I have a need for a large amount of serial I/O from a desktop computer in a robotics application. I considered using all off the shelf parts with a large set of USB hubs and usb to serial adapters, ...
0
votes
1answer
621 views

Sending multiple electrical signal to PC via Serial port

I am doing a project in which I want to control small toy car using EMG signals from my forearm. I want to send 4 electrical signals to the computer. I have made a processing circuit which contains an ...
-4
votes
2answers
140 views

Conversion of RS232 to USB [closed]

Can anybody explain how FT232R or CP2102 or some Serial to USB converter and it magically appears as COM port on PC? I would appreciate a detailed explanation on how the conversion happens. Some ...
0
votes
2answers
111 views

Out-of-band communication between two PCs

I'm working on a little project. In the project, data must be sent from a PC to another device. Initially, I used a Raspberry Pi and life was good. I could communicate Python between the RPi and the ...
0
votes
2answers
1k views

Has anyone built an rs232 to usb converter?

I want to implement serial communication into one of my projects, but I'm hesitant to use a serial cable due them them being exceedingly hard to find nowadays. I found an old converter and took it ...
0
votes
1answer
179 views

Can FTDI Basic Breakout and FTDI XBee Explorer USB be used alternatively?

I wonder if these two boards from sparkfun can be used alternatively for USB to Serial communication? The first: (FTDI Basic Breakout) https://www.sparkfun.com/products/9716 The second: (FTDI XBee ...