Questions tagged [system-design]
This tag should be used for questions regarding the selection of components, deciding functionality, and other issues that may come up during the early stages of a project.
61 questions
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How can I downsize protruding pins from sensors to so I can use a smaller housing?
I'm trying to create a system where I continuously measure color data from a fluid. I've created a 3D-printed box where the pins fit; if they're configured in their out-of-the-box arrangement, what ...
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Is there a standard way to describe devices?
I'm new to Arduino. I'm curious whether there is a standard way to record the plan of a device—for instance, if I wanted to share it or communicate the design to other people. I realize the short ...
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does EEPROM reset itself when a new code is uploaded?
I have a Nodemcu with which i'm doing a project. So whenever there is a power loss i want values of some of the variables to not be reset, because of that im trying to store the values in EEPROM of ...
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Problem with floating of AnalogRead
For a university Lab course i have to realize a UPS unit with a internal LiPo battery . The unit uses as battery charger a buck converter
I have only a problem with the battery charger (buck converter)...
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What's the time out of Wire.begin()?
Here's a schematic of my project:
The purpose is to make laptop work as keyboard for desktop PC. Nano uses Serial.read() to get keystrokes from laptop and forwards key press and release data to ...
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Is it advisable to use Serial.write in an ISR when loop() routinely uses Serial.read?
I do not know much electronics.
I have Nano v3 as I2C master, it reads 5-byte packets (of delimtted data) from PC's USB port, processes it and forwards it.
I now need to implement a way to signal PC ...
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Can I create an hemi-cycle raising signal with one pin and the other hemi-cycle signal with another pin?
I am new to Arduino, I would like to know if someone could help me to create this type of signal with the Arduino Uno. Many thanks!!
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MKR Wifi 1010 Project Design
I am newer to microcontrollers and have my first project I would like to try. I have started to sketch out a basic design and would like feedback on things that I may be missed or over looked. I ...
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Trying to use Nano Every as a sort of USB logic analyzer, but can't isolate it from "device under observation"
Here's the scenario: I have a radio that displays information on a 1602A LCD. The 1602A is plugged into a header so I can easily pull it out and instead plug in logic analyzer leads. The logic ...
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493
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Plant irrigation system
I'm very new to the Arduino game I wanted to make a small auto watering system for my plants. I bought these items
5V 1 CHANNEL RELAY MODULE FOR ARDUINO PIC AVR DSP ARMB
9 VOLT BATTERY SNAP CONNECTOR ...
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How to read .txt file from the internet wirelessly [closed]
I am a complete beginner to Arduino, so I'm asking this moreso to see if a project will be feasible.
My ultimate goal is to have this arduino (whenever powered) check this website "https://services....
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869
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Build an improved GSM antenna for arduino mkr gsm 1400
I want to use an Arduino MKR GSM 1400 in my area wich has a bad connectivity on mobile internet. On my phone it's very weak and if i drive to the next village it works sometimes on the arduino with ...
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75
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How to connect both MicroSD module and MPU9235 power in an arduino
I'm really new at electronics and wiring, so please be kind. Coding is my stuff, but I'm trying to learn something here.
I'm working with a project to store the movements of a skateboard through a ...
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165
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Relay with mechanical fallback
In my circuit I have a relay that will turn on some light bulbs this is my circuit:
The switch over the 5V is in fact my Arduino. A HIGH will turn on the relay and a LOW will turn it off.
This is ...
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How to reset an arduino while being able to know which button has been pressed?
Context
I keep the board in sleep mode and want to wake it with different buttons. I need to know which button has been pushed on boot.
In the following schematic, SW-R is actually used to reset the ...
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