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avrdude: ser_open(): can't open device "\\.\COM5": Access is denied. From the above line it looks like something is blocking access to the COM port and stopping the IDE from uploading the sketch. Sometimes AVRDude, the program that runs in the background and does the actual uploading, can lock up a...

How to connect the Smart LCD to an Arduino Uno/Nano: Uno/Nano.......SmartLCD I2C Header GND............G (GND) 5V.............5 (5V) A4.............D (SDA) A5.............C (SCL) Using this sketch with I2C set to 0x3F It does not work. The pinout you are referencing above is for the SmartLCD. Can y...

I have a Uno R4 WiFi, and I cannot get the Hello World example to show output on the display. The version of the example sketch is 24/05/17 version 0.1: Original version Thanks for the pictures - that''s not actually the SmartLCD, it's the standard serial LCD. You can find the relevant forum page w...

Ordered two more to compliment my set.

Yep, I see the order thanks. It will be dispatched later this morning (UK time).

I can't advise on that library but I see a couple of errors in your code so try this: #include <BleMouse.h> BleMouse bleMouse; #define BACK 25 void setup() { pinMode(BACK, INPUT_PULLUP); digitalWrite(BACK, HIGH); Serial.begin(115200); Serial.println("Starting BLE work!"); bleMouse.begin(); } void lo...

Ok, I think I understand your situation. Simply you want the relays to automatically de-energise after a set period of time without any software interaction (in case the software crashes), but you also want to be able to override an energised relay at any point. Which I agree, it would be a nice fea...

My apologies for the dust on the green one. apparently I need to do some house cleaning too

Yeah, they are a bit awkward to dust, especially the 8x8x8 one.

Sorry I didn't make it clear there is no PI involved in this project, purely "Arduino" (ESP32). I thought you said in the previous post that there was no easy way of using the library with a different bus in C? My apologies also, for some reason I was under the impression that you were using a Rasp...

They look great and the cubes look very neat too! Did you cut the parts by hand?

Unfortunately this pushes me into using the mLink library that currently doesn't support alternative i2C busses? (I'm using C/C++ not python currently) I guess I'll either have to edit the lib or scrape out the bits I require to make this work. However you do state this time is stored via NVM so pe...