The Raspberry Pi is a credit-card sized computer that plugs into your TV and a keyboard. It’s a capable little PC which can be used for many of the things that your desktop PC does, like spreadsheets, word-processing and games. It also plays high-definition video. The design is based around a ...

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1answer
48 views

Smart Phone's camera socket

I just want ask how the socket in the image is called? I couldn't really find and the closer I could get is only Raspberry's module.
0
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1answer
69 views

How can I get data remotely from a moving object? [on hold]

I am a student and I am doing a project which requires me to get data remotely and monitor it in real time. I have been asked to monitor engine parameters of a Car like Fuel Efficiency,Engine Temp, ...
0
votes
0answers
39 views

Best and Simplest component for switching

I have a SIM 928 that has 4 pins for serial rx/tx. One set is for GSM and the other is GPS. On raspberry pi or micro controller, I only have one set. What is the best component to use to switch from ...
1
vote
1answer
26 views

Best way to make connection with rubber contact pad

I dismantled a push-button telephone and I am want to control it using a Raspberry Pi (A+) to trigger the button presses. The phone has a grid of 12 (+2 special buttons) contacts that correspond to ...
0
votes
0answers
13 views

What's the best way of using LiFePO4s in a UPS?

I have built a server using a Raspberry Pi and a couple of USB HDDs. The HDDs are 3.5". The server system also includes a network hub and a router, so I need 5 V @ 2A for the Pi, and 12 V @ 4A for ...
0
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1answer
42 views

Powered USB hub

I would like to know if the bellow montage is going to work. I will try to convert a cheap USB hub for a raspberry pi zero.
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3answers
37 views

RaspberryPi + FET LED lighting controller

I'm attempting to control an LED Lighting Strip from a RasperryPI GPIO pin. I have the following setup: simulate this circuit – Schematic created using CircuitLab This is the diagram ...
1
vote
0answers
53 views

Is it possible to write data directly from a mobile to a PC through the mobile's SD card slot? [migrated]

I have to questions: -Is it possible to write data directly from GoPro to a Raspberry Pi through the GoPro's SD card slot? -How does Micro SD card function? I would like to use my GoPro (hero 1) as a ...
0
votes
1answer
28 views

Why dc motor is buzzing when using it with XL6009 converter?

I have the following scheme RPI, L298n with 6v DC motor. I'm trying to add a XL6009 boost converter but set to boost 5v into 6v but sometimes the motor is rotating and sometimes is buzzing. Does this ...
0
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1answer
30 views

Senseo & Raspberry PI soldering circuit board

I am kinda new to the whole hardware stuff and as an amateur I am working on a little project. I would like to connect my senseo machine to my Raspberry Pi. I've got a senseo HD7810 and a Raspberry Pi ...
1
vote
1answer
39 views

Battery charger with load sharing for portable Raspberry Pi 3

i'm doing portable Rasberry Pi 3 and i need help choosing the right battery power system requiered for the project. The project has: Raspberry Pi 3. Normal power consumtion around 700 mA with peaks ...
0
votes
2answers
73 views

Raspberry Pi controlled power on/off switching of an Ethernet connection

I want to power on/off an (Gigabit) Ethernet connection physically by using some circuit. The main idea was to use a transistor with the Raspberry Pi GPIO to switch an Ethernet cable. The schematics ...
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0answers
40 views

Pinout diagram of Lora SX1272 RF board module

I already bought Lora SX1272 and Arduino . I would like to connect Arduino with Lora SX1272 RF board module. However, I couldn't find the pinout diagram of Lora SX1272 RF board anywhere. Could ...
1
vote
1answer
49 views

Using AC relay with DC voltage

I apologise in advance if this is the wrong forum, or I'm not providing enough details. I'm building a thermostat zone controller on a raspberry pi and I've encountered an issue with the relays in my ...
3
votes
1answer
37 views

CE and FCC for MCU boards/Raspberry Pi HATs/Arduino shields etc

There doesn't seem to be a great deal of information on the internet about this (and the information that there is is usually contradicted somewhere else), so I'm going to ask this here, in the hope ...
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0answers
37 views

Help to build Mini PCI-E add-on card for Raspberry Pi 2 [migrated]

Is it possible to build an add-on card that has mini PCI-E slot, SIM slot and LED and that can be attached to Raspberry Pi 2 GPIO header? It would save me one USB port and it would be more neater ...
0
votes
1answer
136 views

Have Cell Phone Display Panel(s) been hacked to accept HDMI?

Cell Phone Displays are cheap and have high-resolution and touch sense, but use varied specialized inputs via ribbon cable. So, has the DIY community made any controllers to input HDMI? What about the ...
0
votes
1answer
52 views

How to create a network of multiple xbee s2 with python and arduino

I'm working on a wireless sensor network in which I have one coordinator router (API mode 2) connected to a Raspberry Pi 2, 5 or more routers in API mode 2 as well. Each router is connected to an ...
0
votes
0answers
32 views

Relay module not working

I bought this relay module and I tried connecting it to my raspberry pi. I attached the Vcc (one next to the inputs) to the 5v rail of the pi and gnd to gnd. I attached the input pins to various gpio ...
0
votes
1answer
65 views

MCP3008 reading wrong values

I'm currently using an MCP3008 ADC with Raspberry Pi and interfacing them with the wiringPi library. To test the MCP3008 was reading the values properly I set up a voltage divider with a 100kΩ ...
0
votes
1answer
44 views

Which battery to use to charge from 12v solar and supply raspberry pi [closed]

I'd like to run my raspberry pi via solar energy. I have a 12v 20w solar panel with the following charge controller: ...
0
votes
1answer
26 views

circuit explanation for detecting different gases by mq2 with raspberry pi [closed]

I am able to get the readings from mq2 sensor but don't know how to detect different gases by it. Can anyone help me in getting the circuit explanation of detecting different gases by using mq2 ...
0
votes
1answer
50 views

home automation with arduino, raspberry using externally powered relay board

I have a plan to put together small home automation system. For now I was just playing with smaller parts like single type of sensors at once etc... I would like to ask for opinion & check of my ...
1
vote
2answers
59 views

charge 5v battery with 12v solar panel

I've a 5v 2200mAH battery and a 12v solar panel and charge controller. Is there any danger in charger my battery from the 12v panel/controller? The batter will then power my raspberry pi zero ...
0
votes
1answer
35 views

Getting Raspberry Pi or Arduino to control three clock hands separately

I want to make an analog subway countdown clock. The idea is to have an ordinary clock with three hands. These hands will point to the number of minutes before the next, second next, and third next ...
0
votes
1answer
24 views

My BeagleBone Black does not turn on other than power LED turns on for a second

The power LED just turns on for a second and turns off. I again tried with power adapter (5V 1A) and the mini USB cable but nothing else happens.
0
votes
1answer
47 views

pwm amplifier with npn bjt

I'm trying to do a pwm amplifier in order to control 3 fans with one pwm signal. Since there are three fans and according to the pwm specs allowed current per each is 5-8mA, I expect current load of ...
0
votes
1answer
40 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 ...
-2
votes
3answers
54 views

Powering Raspberry Pi and servo motors from a single power adapter

I want to use a single power supply for a Raspberry Pi and 2 servo motors. The servo motors require 6V for operation and their cumulative current consumption does not exceed 1A. The Raspberry Pi runs ...
0
votes
1answer
19 views

What does short circuiting a RST front IO header do?

My motherboard has a connector to enable the use of a front panel RESET button: I would like to simulate the press of the button (equivalent to short circuiting the wires) by a Raspberry Pi, by ...
3
votes
3answers
522 views

How to convert 14V AC to 5V DC?

My interphone's buzzer receives an AC voltage of 12V. I would like to substitute this buzzer with an embedded board (raspberry-pi). What would be the ideal way of converting such voltage to 5V DC? ...
0
votes
1answer
39 views

How to lower volume on microphone input before outputting through headphones? (Using a DSP) [closed]

As part of a senior engineering course, my partner and I decided on tackling the problem of hearing loss in youth, and went with a more preventative approach, trying to reduce the amount of cases ...
0
votes
1answer
60 views

LED strips controlled by SN3218

I have 6 RGB LED strips and I would like to control them by Raspberry PI. 6 strips with 3 colors each require 18 controllable PWM sources, so I have SN3218 which is exactly what I need. But I am not ...
0
votes
1answer
41 views

Multiple signals over single RJ-45 cable

I need to set up a Raspberry Pi system with remote storage, but only have access to a single RJ-45 cable. This limitation is so the system may be replaced in the future, without having to change the ...
5
votes
1answer
145 views

Understanding an 'ideal' diode made from a p-channel MOSFET and PNP transistors

The Raspberry Pi B+ models have a protection circuit between the USB connector and the 5V net on the board. They recommend putting a similar protection circuity on a Pi HAT before 'backpowering' the ...
0
votes
0answers
63 views

Interfacing Example for GT-511C3 Fingerprint Scanner and Raspberry PI 2 Model B

I want to know, how to connect GT-511C3 Fingerprint Scanner Hardware with Raspberry PI 2 Model B and will these connectors be good to achieve the same? and, I want to connect the scanner without ...
0
votes
1answer
102 views

Help SIM5320 Breakout Board construction for Raspberry Pi model B

I need a breakout board based on SIM5320 for experimenting web server http requests. I've found the board shown above in adafruit library and thought of using it as reference and slim it down to the ...
-2
votes
1answer
93 views

Wire soil moisture sensor such that it only powered when measuring

I am a rookie electronics tinkerer who wants to use the SparkFun soil moisture sensor. I plan on connecting it to ADC MCP3008 to the GPIO pins on a Raspberry Pi. On the SparkFun site the vendor warns ...
0
votes
1answer
59 views

How to control house climate system

In my house I have a climate system and I want to control the modes using RPI. I'm not very strong in electronics so my question is - How can I connect RPI GPIO to this hardware X2 switch? Like ...
1
vote
2answers
237 views

What is the quickest way to read an analogue signal - Arduino / Raspberry Pi + ADC / Arduino + ADC?

I need to sample 50Hz voltage signals from four CT current sensors and compare the waveforms to a voltage signal from the mains (stepped-down and offset for ADC) to accurately measure power ...
0
votes
2answers
62 views

How can I measure the supply voltage of batteris without a multimeter?

My system consists of two XBee S1s and a Raspberry Pi. I've attached a TMP36 sensor and a ...
3
votes
2answers
100 views

Different ways to detect seals? [closed]

I would like to build an underwater mammal detector to take videos of seals when they get in and out of their cave (the entrance of their cave is underwater). It will be a waterproof sealed box with ...
1
vote
1answer
72 views

Reading LM35 temperature sensor through long wire

I'm trying to read temperature through long wire, using raspberry pi. I use mcp3008 that I power using one of my rpi 5V pins. I use the same 5V pin to operate my LM35 temperature sensor. The ...
2
votes
3answers
111 views

Hardware for IP Camera Project

I intend building a custom IP camera for home use, project goals are: Videos are stored remotely in real time (storage somewhere else in home or cloud server) Live steaming from internet Video data ...
0
votes
2answers
41 views

Using Raspberry Pi GPIO for matrix switching

I'm working with a Raspberry Pi. I want to be able to connect any two of 7 pins together in a matrix fashion to control a device with a keypad input. This means I need to be able to short any of the 3 ...
0
votes
2answers
187 views

How does a 4 pin IR Object/Proximity Sensor work?

How does this IR Proximity/Object sensor work ? Any resources or tutorials on how this works would be really helpful. I want to use this for my raspberry pi NOTE : I have searched a lot on the ...
-2
votes
1answer
109 views

How to use plain 315 MHz RF Transmitter with Simple RF T4 Receiver - 315MHz using Raspberry Pi?

I bought a 315 MHz RF receiver - Simple RF T4 Receiver - 315MHz Toggle Type - and a transmitter - Keyfob Single Button RF Remote Control 315MHz, both from Adafruit. After trying some prototyping to ...
-1
votes
1answer
117 views

Programming Intel i3 like RPi [closed]

I am building a fairly large home automation system comprising of cameras and other sensors. I experimented with a Raspberry Pi, but it simply wasn't able to handle the load. Therefore I want to know ...
0
votes
2answers
125 views

Serial communucation rasperberry pi and atmega328p

I have a design system which is generate data. My system include lidar sensor and atmega328p. Atmega is driving my sensor and generate data. No problem is here. But my aim is data processing in matlab ...
1
vote
2answers
231 views

Flickering on PCA9685 PWM controller with 3W RGB LED and Picobuck

I'm hoping someone here has some experience with the PCA 9685 PWM controller (16 channel, I2c interface). So far everything is working pretty well after getting the circuit connected properly. I'm ...