All Questions
17
questions
0
votes
2
answers
5k
views
Send float with Serial Port
I'm trying to send float temperature data from stm32f103c8t6 to qt application. When I try tosee value with Keil I can. But When I try to transmit to App I got some error about convering uint8_t to ...
- 3
1
vote
3
answers
164
views
Bandwidth of signal
What exactly do we mean the signal bandwidth is the range of frequencies the signal is made of?Is this referring to the Fourier transform of the signal in the frequency domain?
- 111
2
votes
1
answer
676
views
How decode serial data stream
I am trying to decode a data stream. This signal comes out of an STC 8H1K16 micro-controller. It is from the pin labeled TxD is the picture.
When I trigger the signal I am trying to understand I get ...
- 121
1
vote
1
answer
404
views
MAX233 problem with receiving data
I need to make serial connection between regular PCs and a 3.3v TTL device, I using the Maxim 233 which has internal capacitors.
I have the PCs incoming TD connected to R1_IN and RD T1_OUT.
The ground ...
user106458
0
votes
1
answer
244
views
Read serial data from unknown source using Raspberry pi
I have a fuel dispenser, which has one keypad and two displays, each display has three of 7 segment LCDs.
I want to control the fuel dispenser with a PC or a phone. The way to do this in my knowledge ...
0
votes
2
answers
2k
views
Data over DC Power, mono-directional, simplest circuit
(To preface, I will probably just run 4 wires, with RS485 on 2 and power on the others, but this came to my head, and I started thinking about it.)
I was thinking of a simple way to send simple low ...
- 11
2
votes
1
answer
598
views
Transmitting through IRDA as if its a native serial port. Possible?
I'm currently making a lazertag project that utilizes the standard UART data format for data I/O.
Before I go make up another circuit board that connects a photo-transistor that senses a laser beam ...
1
vote
1
answer
878
views
Serial port adapter reads 5V data but not 3V data
Each time I wanted to hook up a micro-controller UART to my computer via serial port, I make an adapter with the following schematic:
For the capacitor, I use 47nF and for the diode, I use 1N4001. ...
user152879
0
votes
5
answers
403
views
Am I having an impedance issue in a cable between two devices? And if so, How can I resolve the issue?
I have two devices, device 1 and Device 2. The devices are approximately 60 feet apart connected to each other through a long cable. They communicate with each other at 2400bps synchronous serial ...
- 29
-1
votes
3
answers
366
views
Control WR and OE lines of parallel SRAM with only 2 wires while loading data with 8
This is my circuit in relevance to my question:
I apologize for the messy wiring, but I did it that way to make my PCB production substantially easier.
My problem is I only have 10 wires available ...
user116345
-1
votes
1
answer
1k
views
Clock and data vs rx and tx communication
I'm working on a project in which I have to make two pic10f200 microcontrollers communicate via serial communication lines. I know that with Arduino you interconnect the two board's rx and tx lines, ...
0
votes
1
answer
431
views
Alternative to AM and FM transmitting for data transmission?
So, I need to communicate wirelessly between a micro-controller and my computer. I'm building a radio receiver circuit, and a radio transmitter circuit that works on FM transmission. However, I had an ...
- 717
1
vote
3
answers
567
views
Convert MP3 recording of data casette to serial data
I have a retro EMCO F1P CNC machine with a matching M1 controller that comes with mini data cassettes containing the "Machine State Data" which must be fed into registers of the controller before ...
3
votes
2
answers
586
views
Dual port, serial interface, buffered, shift register
I have an "interesting" problem.
The proposed design, for a system I'm working on, needs to use 16x 16-bit serial ADCs and I need to interface the results of all 16 ADCs to a synchronous serial ...
- 465k
0
votes
2
answers
123
views
Wireless data acquisition for PC [closed]
I’m looking for an off the shelf device to send a serial stream of data (low speed ok) wirelessly to a PC. I’m guessing the easiest way is through a comm port or USB port. Distance is less than 25 ...
