Questions tagged [raspberry-pi]
The Raspberry Pi is a credit-card sized computer that plugs into your TV and a keyboard. There have been several generations of the device with improved performance, more memory, and more connectivity. This tag should be used for electrical engineering questions that involve the use of a Raspberry Pi. For questions about the Raspberry Pi itself see the Raspberry Pi specific forum (raspberrypi.stackexchange.com).
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Baking a Raspberry Pi Pico W before reflow soldering?
JLCPCB is trying to tell me that the RPi Pico W needs to be baked to reduce moisture before putting it through reflow soldering. They're saying that "It is moisture-sensitive according to the ...
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1
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Trouble connecting RS485 turbidity sensor to a Raspberry Pi
I am trying to connect a Turbidity sensor that operates using Modbus to a Raspberry Pi. The sensor is an industrial-grade device and comes with the needed communication protocols (http://www.sonbus....
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2
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How does this (active low triggered) circuit work?
I suspect this question will be trivial for many of you, but I haven't been able to find any answer online that satisfies my curiosity.
I have an ACTIVE LOW relay module that connects to a GPIO [...
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How to connect RM3100 magnetometer to a Raspberry Pi
For a school project, I would like to measure the effects of solar winds on the local Earth’s magnetic field using an RM3100 breakout board magnetometer from PNI sensor. I soldered the headers myself ...
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Properly supplying various voltages to various electrical components
I am making a robot but I wanted to ensure that I won't damage my components. I'm new to the field. Here is my setup:
Link to diagram: https://docs.google.com/drawings/d/1a_Z-...
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How do I monitor/record signals on an FPC ribbon cable?
I have a camera where there are 6 FPC ribbon cables connecting it to the "tape deck".
How do I record the signals being sent to and from the tape deck, and how do I know which direction ...
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RS485 Communication Issue with ABB M4M 30 Modbus Using Waveshare RS485 CAN HAT on Raspberry Pi 5
I am using a Waveshare RS232/RS485 CAN HAT with a Raspberry Pi 5 running Raspberry Pi OS (Full, 64-bit) to connect to an ABB M4M 30 energy meter over Modbus RTU via Node-RED.
When I scan for devices ...
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Securing a power supply with eFuses
UPDATE: I updated the image. For U3 I would like to use TPS2660. I also changed the input power voltages to +18 ... +32 V. Instead of an eFuse, I would like to use a USB power distribution switch for ...
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ESP32 charging circuit from RPI with supercapacitors
I’m working on a small project and would love a sanity check on my schematic (will attach below) — especially from anyone experienced with ESP32 power design and supercapacitor setups.
Goal:
I want an ...
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Raspberry Pi CM5 Power MUX
I want to build a custom carrier board for my Raspberry Pi CM5, which is powered by a step-down power supply (8-40V → 5V + 3.3V) during normal operation. To be able to flash the CM5 directly on the ...
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Charger Circuit with Boost Converter Layout and Design
PREVIOS POST
Charger Circuit Layout and Design
Context
So previously I've had this design with only the battery functions, protection and charging, but due to the high price of custom PCBs I've ...
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Charger Circuit Layout and Design
Edit. I forgot to include one of the document about power path designs from Texas Instrument. It's in there now.
I know almost nothing about circuit design and PCB. This is my first attempt at making ...
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2
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Reducing the noise in a transimpedance amplifier circuit
I've soldered a transimpedance amplifier circuit on a strip board for use in detecting moving objects. I am using the following components for the transimpedance amplifier:
an MCP6272 dual op amp (...
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1
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A relay diagram that I will run with the Raspberry Pi 4 Model B GPIO pins
Is the circuit shown in the image suitable for driving a relay with a Raspberry Pi 4 Model B? Will high voltage and current damage my Raspberry Pi 4 Model B device? Will it cause damage when used with ...
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Cutting off power from eInk displays via a mosfet
I'm wiring up a few low power devices (charge pump for a very small OLED display; eInk screens) for which I want to be able to use GPIOs to control the power to those devices, one GPIO for each of the ...