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Unanswered Questions

121 questions with no upvoted or accepted answers
4 votes
0 answers
175 views

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....
3 votes
1 answer
151 views

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 ...
3 votes
0 answers
713 views

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 views

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 ...
3 votes
0 answers
328 views

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, ...
3 votes
0 answers
2k views

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 ...
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 ...
3 votes
1 answer
3k views

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 ...
2 votes
1 answer
61 views

Is it possible to use an already working Barebones (328P) via FTDI to load a bootloader onto another 328P?

When testing / developing a proto type using a barebones board with 328P, I usually add a Serial to TTL adapter, which then allows me to modify and upload code as well as being able to the use Serial ...
2 votes
0 answers
404 views

Implementing very slow external drive using ESP32 and TinyUSB

I want to implement a simple external drive with ESP32-S3 that would act like a normal USB enabled flash drive when connected to a computer. The actual storage of the data is done mechanically (for ...
2 votes
0 answers
41 views

Can the USB interface IC be identified via code alone?

I know that the master controller can be found in verbose upload output in IDE, but I have a few boards from different manufacturers and my smartphone camera is apparently insufficient to take a ...
2 votes
0 answers
718 views

Attiny85 uploading error

I am getting an error while trying to upload programs to the Attiny85 through a USBTinyISP programmer, found here. Unfortunately, it isn't working. Following this tutorial for connecting the board and ...
2 votes
0 answers
270 views

Firmware for Atmega32u4 on the Arduino Uno Wifi Rev2 (causing upload issues)

I reprogrammed the Atmega32u4 on my Arduino Uno Wifi Rev2 in order to use it as a human interface device, but I am now having difficulty programming the 4809 (through the 32u4 over UPDI) with the ...
2 votes
0 answers
51 views

Low power USB C power supply

I am searching for a tiny board to that accepts an usb-c cable and outputs 5v. To my understanding, for the few hundred milliamps two 5k1 resistors on the board would suffice. PD is not needed. I ...
2 votes
0 answers
237 views

arduino usb host shield hard drive

Greeting to all, i have a mega2560( NOT AN ADK ), and usb host shield 2.0, and the following a) 1 pendrive( 8GB) formatted as fat32 b) 1 300GB usb hard drive formatted as fat32 c) 1 1TB usb hard drive ...

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