Questions tagged [wires]
Wire is a conductor that used to connect electronic components each other
146 questions
1 vote
0 answers
247 views
How to Connect Two CQRobot Ocean Non-Contact Water/Liquid Level Sensors (CQRSENYW001) to Arduino UNO REV3 (A000066)?
I am a complete beginner trying my hand at a home automation project. Part of my setup includes using an Arduino UNO REV3 (A000066), and connecting two CQRobot Ocean Non-Contact Water/Liquid Level ...
1 vote
1 answer
99 views
What do I need for a plug?
I've manage to build myself an RFID music player which I'm pretty chuffed with. It's definitely a bit home made but it woks and I'm proud of it. I don't know what plug type to buy to sort my problem ...
- 129
3 votes
1 answer
5k views
Button Matrix / Wiring Schematics
I am just beginning my journey into the Arduino world - plenty of development experience, but basically nothing with electronics outside of building computers. The question I have involves wiring ...
- 141
-1 votes
1 answer
482 views
4x3 keypad not providing any output and the output it does provide is incorrect
I am trying to figure out how to use a 4x3 keypad and just want to receive the key numbers I select on the serial monitor. The problem I am getting is that some of the keys I type don't give me any ...
-1 votes
1 answer
113 views
Pressed Buttons are permanently low and one of them is not working [closed]
I am a beginner to Arduino, and I'm having a problem in a project that I am currently working on. I was just beginning to write the code, after preparing the components and the wiring, and suddenly ...
1 vote
0 answers
274 views
Micronucleus firmware 2.6.1 - Activate bootloader put D- pin to high
I flashed my ATTINY85 Digispark v3.0 with micronucleus firmware 2.6.1 and it works fine, the onboard led lights up and the another led blinks twines every 500ms (not sure way but it seams like ...
0 votes
1 answer
108 views
Bootload from a Nano to an ATMega328 without a crystal
I have a program to load from a Aduino Nano as ISP to a ATMega328p chip that will have an internal clock at 16M, but I don't have a crystal handy. Is there a way I can not have to buy a crystal? What ...
- 167
1 vote
0 answers
43 views
Help needed to check if my solenoid wiring is correct
I'm planning a new custom keyboard project which involves a solenoid being controlled by a Teensy2.0++, and i would like to power everything with just a USB cable. I don't have much electronics or ...
- 11
1 vote
1 answer
204 views
How to use this specific arduino shield
I am trying to understand how to wire this Arduino Uno shield properly. My goal/main questions: I have 6 servo motors and I am trying to wire them properly to this shield. Do I need an external ...
4 votes
1 answer
1k views
Arduino UNO won't move servo
I have a simple MG996 servo motor and I am trying to make it move with my Arduino Uno. I tried different ways of wiring but nothing seems to work as fully expected. For the wiring I followed this ...
5 votes
1 answer
196 views
Wirelessly (but fast) transfer STEP and DIR output from Arduino to stepper driver
Very short version: Looking for a way to wirelessly get STEP and DIR signals (only those two signals) from an Arduino to a DRV8825 stepper driver about a meter away: Arduino -> STEP and DIR IO pins ...
- 151
1 vote
1 answer
633 views
I2C pull up resistors and an I2C MUX
I have a rig with 5 light sensors on an I2C mux and I am wondering if I need only 1 pull-up resister set for the whole bus or one on each branch from the mux? Or should I remove all the pull-ups from ...
- 121
2 votes
1 answer
63 views
Connecting LEDs and push buttons 12 feet away from Arduino UNO
I have a PCB (let's call it remote PCB) on which I have 4 LEDs and 4 buttons mounted. The remote PCB is far away from my desk (about 12 feet away). The LEDs are used to indicate the status and the ...
- 201
2 votes
2 answers
430 views
Use chars in quotes in const char* as name of function
I have been trying for a long time how to use a word declared as const string* word = "xxx" as name of void function declared somewhere below in my code. Here is example with ssid: const ...
- 39
1 vote
1 answer
329 views
NodeMCU and relay with VIN power
Have read a lot of different things online, and I just ain't sure yet. I'm trying to hook up a NodeMCU to control some relays. And want to power the NodeMCU by the VIN pin. Anyone know if this setup ...
- 13