All Questions
41
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I2C issue communicating with an analog to digital converter mux ADS1015 through TCA9548A I2C multiplexor
I am using a Raspberry Pi Zero 2 to talk through a TCA9548A to multiple ADS1015, each ADS1015 is on a separate SDA/SCL channel of the TCA9548A. I am able to scan all channels and see the active ...
user298907
0
votes
1
answer
72
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I2C Research Questions
I have some questions regarding the I2C protocol. Is it possible to use multiplexing/demultiplexing to combine the sda and scl lines into a single one? Is it possible to use multiplexing/...
- 123
1
vote
1
answer
156
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Retry function - I2C hung state handling PIC XC8
This may be a very borderline Stack Overflow question, but I decided to post here because I'm dealing with the I2C protocol for a PIC MCU in XC8.
I'm learning how to talk with devices over I2C and it'...
- 620
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votes
2
answers
396
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Decoding unknown UART
I'm struggling with a project here. I have an Elechomes EC5501 air humidifier that I want to make "smart". When taking it apart, I found out it uses a circuit board similar in most points to ...
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231
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Can an LTC4311 I2C amplifier be used along with PCA9515A I2C repeater
Can the LTC4311 (click for datasheet) be used along with the PCA9515A (click for datasheet) I2C bus repeater?
EDIT to describe my goal: I am using a RaspberryPi4 with around 1m long cables and the ...
- 377
2
votes
2
answers
221
views
Modelling I2C capacitance for cables under water
My setup works fine with following combination of hardware:
Raspberry Pi4 connected to a TCA9548A I2C Multiplexer from Texas Instruments, whereas each channel is connected over 4wires (GND, VCC, SDA, ...
- 377
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votes
2
answers
96
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When buying parts with serial interfaces is it useful to check timing requirements?
When buying parts with serial interfaces is it useful to check timing requirements? I'm especially curious about something like I2C; is it generally enough to see that a component is capable of ...
- 139
1
vote
2
answers
287
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HX711 loadcell amplifier with builtin mcu communication problem
I bought the following version of HX711 module.
Connection to Arduino
VCC -> 5V
GND -> GND
SCK/TX -> GPIO 6
DT/RX -> GPIO 7
However, it doesn't work. I have tried different libraries and ...
- 75
-2
votes
2
answers
470
views
Converting RS-232 to I2C?
I have hardware that communicates using 3-wire RS-232, and I want to communicate with it using I2C. Another post here talks about wrapping I2C in serial or vice versa. I am thinking about using an MCU ...
- 985
-1
votes
2
answers
341
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10m wired connection: I2C Repeater or RS485 [closed]
I need a wired connection between one Master and several (5-10) slave devices. I've considered UART, SPI, I2C, RS232 and RS485. In the end, I've narrowed down the options to I2C with a repeater or ...
- 377
0
votes
2
answers
465
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Bi-Directional RS-232 / RS-485 translator using MAX3162 IC [closed]
I'm trying to communicate with an I2C bus using the Serial Card in my PC (NI PCI485/8). I've created a circuit using the MAX3162 to translate from RS485 to RS232. Then I use the MAX3232 as a level ...
- 11
6
votes
2
answers
4k
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Is the SCK line in I2C unidirectional or bidirectional?
I've always considered SCK to be a unidirectional line since the master generates/transmits the clock signal and the slaves "see" the generated pulses. I have found many sources that agree with this ...
- 321
0
votes
0
answers
244
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Two-way communication between esp32s
I am planning a circuit that requires two-way communication between one esp32 and 3 others. I want to use a master/slave architecture as shown here:
They need to be able to communicated via hardware, ...
- 61
0
votes
2
answers
6k
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RS-232 to I2C communication [closed]
I'm trying to establish communication between two boards, one of which has an RS232 output and the other with an I2C input. I've looked for adapters online and the only ones I've found seem to be ...
- 5
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0
answers
325
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SMBus Address and BaudRate
Hello I need to communicate with some batteries ( BT-70791CK from BrenTronics). They use SMBus ver 1.1 for communication, but in datasheet of the batteries there is no information about the SMBus ...
