i2c

For my assignment, I need to create a Proteus 8 schematic showing Arduino Uno → PCF8574(I2C backpack) → LM016L LCD connections using I2C. It wasn't too hard to implement basic LCD control (VSS/VDD/VEE/RS/RW/E/D0-D7 → P0-P2,P4-P7). In internet tutorials it typically looks like this: (SCL and...

Hey all, I am looking for some design guidance on on DACs & I2C. I am designing a circuit which includes two DAC & Amplifier subcircuits, we can call it 5V_DAC and 24V_DAC. Both of them use the MCP4725AOT DAC which does not have an enable pin. They both rely on the SCL and SDA signals from an...

I needed a very small humidity sensor, so I made a PCB for the Sensirion SHT45. I interface it with a Nucleo-32 F303K8, and have tried a Nucleo 64 as well. It seems that I'm able to send commands to it, but when I try to read it, I receive only NACKs from the sensor. This behaviour could be...

I'm working on some boards that utilize the BME280 and AS7263 (separate boards). I just got them in yesterday from Osh Park, assembled them, and am now trying to experiment with them. Unfortunately, as of now, I haven't been able to get them to work when hooking them up to a Pi Pico. DRC...

I am currently working with the FT260 chip on the UMFT260EV1A module. It is I2C to USB bridge that uses HID protocol to communicate with the host. I have established connection with the chip and am also able to communicate with an I2C device through the FT260. What I am struggling with is the...

Hi smart people, No doubt there are people here who can help me with the following: The ultimate goal is communication between an MCU (i.e. RaspberryPi) and 64x HX711. The idea: Make 8x distribution boxes in which 8x HX711 are mounted that communicate directly or via another distribution box...

Dear all, first, thanks for greating me in your community and sorry if I'm posting in the wrong section ! For a quick presentation, I'm from France, I'm 38, I'm an engineer in IT, mostly embedded safety SW for automotive. I've got some basics in electronics from school, but lost most of it in...

Sometimes it’s hard to know where to start with getting devices working on a new platform, like I2C keypads, sensors and screens: here’s a writeup that provides some sample code to nicely interface plug-n-play SparkFun devices with a custom OS (NetBurner’s RTOS) with minimal reimplementation...

I'm going to write software SPI and I2C for PIC 8 bit MCU where I need to write command and read sensor data. I want to know what is the best practice to write such library. As we can use delay statement for clock high and low state but its not a good practice (sounds to me) because delay...

Hi all, I have a design for a SSD1306 display driver below that I tested last night and worked (given the I2C address sometimes changed out of nowhere and every couple hundred frames would have artefacts), however this morning the display is no longer even being detected by an I2C bus scan. I...

I'm trying to understand using LTC6811 as an I2C master. If I understood correctly the commands to the LTC are sent by pulling the CSB pin low and sending the clock and data to SCK and SDI pins? For LTC to send a command to the I2C bus you need to write data to it's COMM register, so you use...

I am currently trying to develop a pulse oximeter. For this I use the MAX30102 sensor and the NXP LPC1768 microcontroller. The communication is done via I2C. I have configured the MAX30102 sensor to generate an interrupt as soon as the FIFO is full. As soon as I start the program in debug...

Hi Community, I'm an Application Engineer and I need to design an interposer board that connects to an FPGA module. More specifically, the module is an ALINX AC7100B, which uses Xilinx Artix-7 XC7A100T FPGA. I heard complaints from my colleagues that some FPGAs do not have pads with Schmitt...

Hello, and sorry for my English. I want to use a I2C digital potentiometer (TPL1401) so, before I use it, I'm reading the datasheet (I'm not doing any specific application, I just want to improve my few skills in i2c). In this moment I don't have the IC physically to test, but in page number 31...

Hi community, I'm Marco from Italy, I'm an electronic developer and I like automation in general. I would like to share my problem with community, to know what do you think about this. I'm developing an electronic board for general automation purposes, on this board there is a STM32F104 that...

I want to use two or more adc channel using I2C and lcd. Can someone help me where i am doing wrong? I don't get a code error but also I can't get number on the lcd. I2c.c #include <xc.h> #include "I2c.h" unsigned char RS, i2c_add, BackLight_State = LCD_BACKLIGHT; //---------------[ I2C...

Hello Experts, My application is a commercial battery powered device. The 2 most important thing for me is to achieve "accuracy in metering" and "Increase battery life" of my product. 1st thing I'm able to achieve using MSP430FR6047 chip for water metering. 2nd thing is what I'm working on...

I am trying to send sensor reading from Arduino Uno to raspberry pi and I want to save this incoming sensor reading to SQLite which I downloaded to Raspberry pi. I used lm35 sensor on Arduino Uno and i used the i2c way for communication between Arduino Raspberry pi. I managed to transmit the...

Hey, first of all I would like to say that basically all of what I'm talking about is far far away from my comfort zone and everything I know is from a 30 minute research on this topic. So I am trying to reset BIOS password on an old ASUS X51L laptop because everytime I turn it on I first have...

I am using PI4IOE5V96224ZLEX for one of the project. It's a stackable I2C design, each stack shall have common hardware and will be stacked one upon the other. The base unit shall have an MCU which shall act as I2C master, while all other stacks as I2C slaves. PI4IOE5V96224ZLEX datasheet...