raspberry

Hi everyone, I’m working on a relatively simple system, but I’m encountering an instability issue in some of my prototypes. I would appreciate any insights you might have! **System Overview** - Power is supplied by a 24V 20Ah battery with a max discharge current of 9.8A. - The 24V line...

Hello, I'm new to electronics and programming. I have a lifetime of experience with computers but in completely different directions. Because I am retired due to illness and I have a lot of free time, I decided not to sit around for nothing. So, having a Rasperry Py 4 model B and a Pi Pico at...

Hello, I'm looking for some advice on a project I'm doing and more specifically the best microcontroller to approach this. I've tried an approach already but reached a number of hurdles and need to return to square one. The project is a physical desktop intercom which takes only a power...

Hi, We are using Raspberry Pi4 with Zero Pi Codec. We are getting audio from a stereo mic and want to transmit this audio to Bluetooth headphones. The program works fine until we want to connect it to Bluetooth. It connects for 5 seconds but it disconnects. We are using the code in Python and...

Hello, I am a student at Escuela de Ingeniería de Gipuzkoa, and I am currently working on a project. The main goal is to estimate the electric consumption of a double-flux mechanical ventilation system (its motor), to do so, we are using an electric curent meter (SDM120M) and a RS485 to LoraWAN...

Hi. I have built an interface between a Raspi 4 and an Alarm Panel with some extra add ons. The diagram below shows 3 circuits A, B & C. Circuit A at the top has 8 inputs from the alarm panel (12v) and feeds them through 8 optocouplers (2 x 4 modules) - note the internal 3K resistors and...

Hello, I am not too strong with building electrical circuits so I am just wondering if I could get some feedback on the circuit I built. I am trying to connect a 12V inductive sensor to a Raspberry Pi 3B+ 3.3V port. The inductive sensor is being used to detect a metal sleeve inside of a valve...

Hello! I am a Ph.D. student in particle physics and for our experiment we need to convert a 5V TTL digital signal (16-bits actually) coming out of a Phillips 726 converter and read it using the GPIO pins of a Raspberry Pi 4. We do not need bidirectional communication. We just need to read this...