Unanswered Questions
312 questions with no upvoted or accepted answers
4
votes
0
answers
76
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Can I use regular pins (Example: D2, A3, etc...) as serial (RX, TX)?
Python/Arduino Beginner here...
I have a DFplayer I am trying to hook to my Arduino and I want to hook it up through the regular pins instead of the RX and TX pins, but I've not been able to find ...
- 41
4
votes
0
answers
175
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Can d2xx connect to an arduino mega 250?
I am trying to replace a device which used a FTDI chip (http://www.ftdichip.com/Drivers/D2XX.htm) to get USB to serial. I need some more code on the chip, so I want to use an arduino mega 2560 instead....
- 41
3
votes
1
answer
151
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Arduino R3 Uno Clone - When barrel plug connected there is 5V on USB. Why?
I have been using Arudino Megas for some projects and never had this problem.
Simply enough - I am powering arduino with 12V in via barrel and take power out via VIN to 12V low very low current small ...
CommunityBot
- 1
3
votes
0
answers
78
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nano 33 BLE problems with reading RC signal
I'm using an Arduino Nano 33 BLE and a L293D motor driver to control a three-wheeled RC robot. The sketch I'm using worked fine with my Uno Rev3, but I've moved to the Nano for size/weight reasons, ...
- 1,042
3
votes
0
answers
105
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My port is grayed out?
Hello I have a question on why my port is grayed out when I go to upload?
I’ve watched so many YouTube videos on what’s the problem and have been trying to do everything but just nothing seems to work!...
- 1,795
3
votes
0
answers
713
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Getting atsam3x8e (Arduino Due) to work
I decided to make a pcb based on the atsam3x8e (microcontroller used in Arduino Due). For the design I copied most of the layout that I found on this site and looked at the official Arduino Due ...
3
votes
0
answers
400
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Software flashing attiny167 from RPi with avrdude
I am trying to flash a program onto an attiny167
(already bootloaded with the micronucleus bootloader)
with a Raspberry Pi via avrdude and USB.
Background
I have 50 Raspberry Pi 3B's connected to an ...
CommunityBot
- 1
3
votes
0
answers
601
views
Do software SPI read from a register using shiftin()
How to read from a register using software SPI, presumably shiftin()?
It works using the builtin SPI library + hardware SPI.
I seem to be able to write but not read using manual shiftin()/shiftout()...
- 3,198
3
votes
0
answers
328
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Arduino IDE programs Leonardo but cannot open serial terminal
I'm using Arduino: 1.6.7 (Mac OS X 10.11.3), Board: "Arduino Leonardo".
When I try to program my code, it works without problems.
When I want to open the built-in Serial Monitor or Serial Plotter, ...
- 2,522
3
votes
0
answers
2k
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Using USB on a Leonardo to receive data from PC
I am new to the Leonardo, having only used a duemilanove before, and I am interested in using it's USB capabilities for a project.
Basically I need it to be an input and output device, communicating ...
- 131
3
votes
0
answers
397
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How do I install a library in Arduino Yun cross compile environment?
A few days ago, I've asked this question.
Thanks to the replies I've received, I've set up a cross compile environment for Yun by following this guide.
I've created a virtual machine with virtualbox ...
CommunityBot
- 1
3
votes
1
answer
1k
views
Program SMT32 black-pill without pushing buttons or propriatary devices
Are there any options for programming an STM32 black-pill from the Arduino IDE without first having to manually push buttons to go into DFU mode or having to buy an ST-Link device?
A solution that ...
- 11
3
votes
1
answer
3k
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Atmega328P-PU: Programmer is not responding
Few days ago, I built my own custom Arduino on the breadboard. It is built according to tutorial on http://www.crash-bang.com/resource/breadboard-arduino/. The Atmega328P-PU is already burned with the ...
CommunityBot
- 1
2
votes
1
answer
83
views
Code for a load cycler seems to be stuck
I am trying to make a battery load cycler to charge and discharge a battery repeatedly for a certain amount of cycles and here is my code:
bool in_charge_mode;
int cycles = 0;
float cutoffvoltage = 2....
CommunityBot
- 1
2
votes
0
answers
80
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My code got my Nano ESP32 into a <500ms reboot loop
I have done a lot of reading and learning after previous help here and it has been great.
I have uploaded and tried many iterations of my code which all worked (Assuming my code was actually good) and ...
- 21