Search found 12 matches

by colubridae
Thu Jan 28, 2016 10:38 am
Forum: Display
Topic: Serial I2C LCD 1602 Module (HCARDU0023)
Replies: 44
Views: 30076

Re: Serial I2C LCD 1602 Module (HCARDU0023)

Yes, the digital signals from your Arduino to the LCD need to have a ground reference. Similarly your power supply for the LCD needs a ground return path. As both the Arduino and the power supply will then be both grounded to your LCD, their grounds are effectively connected together. Many thanks A...
by colubridae
Wed Jan 27, 2016 10:32 pm
Forum: Display
Topic: Serial I2C LCD 1602 Module (HCARDU0023)
Replies: 44
Views: 30076

Re: Serial I2C LCD 1602 Module (HCARDU0023)

Hi Andrew. Work proceeding on my arduino on my model railway. I'm not sure if I asked this, but I'm planning to run my LCD off a separate power supply (5V of course), do I need to tie the ground of this power supply to the ground of arduino? Is this a good thing to do anyway, viz tie all grounds tog...
by colubridae
Tue Jan 19, 2016 12:29 pm
Forum: Wireless / Wired
Topic: HC-06 Bluetooth Serial Module (HCARDU0004 & HCARDU0064)
Replies: 47
Views: 31569

Re: JY-MCU Bluetooth Serial Module (HCARDU0004 & HCARDU0064)

Thanks Andrew. :)

I will have to manage crawling around under my baseboard. :(

Never mind, it was a nice idea.
by colubridae
Mon Jan 18, 2016 5:59 pm
Forum: Wireless / Wired
Topic: HC-06 Bluetooth Serial Module (HCARDU0004 & HCARDU0064)
Replies: 47
Views: 31569

Re: JY-MCU Bluetooth Serial Module (HCARDU0004 & HCARDU0064)

Hi. I'm thinking of getting a HCARDU0004. But only on the basis of being able to upload sketches via Bluetooth. (I'm planning to install my arduino underneath my model railway, so access will be 'not easy'.) So can sketches be uploaded from a pc via Bluetooth (obviously my pc has Bluetooth)? Please....
by colubridae
Sat Jan 16, 2016 10:19 pm
Forum: General Discussion
Topic: argos click and collect
Replies: 3
Views: 2154

argos click and collect

Hi Hobby Comps. I recently purchased a LCD from you and was very pleased with the result. I purchased it via ebay with click and collect from a handy nearby argos. This meant zero postage and handy self collection. I can't find this click-and-collect-from-argos option on your own website. Is it avai...
by colubridae
Sat Jan 16, 2016 3:27 pm
Forum: Display
Topic: Serial I2C LCD 1602 Module (HCARDU0023)
Replies: 44
Views: 30076

Re: Serial I2C LCD 1602 Module (HCARDU0023)

Thanks very much Andrew. Very pleased with outcome.

Have not re-installed IDE yet.

Thanks for tip about running from zip file.

:D
by colubridae
Fri Jan 15, 2016 8:02 pm
Forum: Display
Topic: Serial I2C LCD 1602 Module (HCARDU0023)
Replies: 44
Views: 30076

Re: Serial I2C LCD 1602 Module (HCARDU0023)

Hi Andrew Success! :D re-install of IDE was a bit of a pain. Had to have two runs at it. Mea Culpa. The old IDE is missing the recent sketch option. :roll: FYI I had done some strange coding to solve my single character problem. When I tried to recompile my sketch on the old IDE version it threw up ...
by colubridae
Fri Jan 15, 2016 7:35 pm
Forum: Display
Topic: Serial I2C LCD 1602 Module (HCARDU0023)
Replies: 44
Views: 30076

Re: Serial I2C LCD 1602 Module (HCARDU0023)

I've just taken one out of stock and I can replicate your problem. It's not an issue with the LCD itself, it looks like something in the new version(s) of the Arduino IDE has broken the library. Please bear with me whilst I look into it and figure out a permanent fix. As temporary fix, if you downl...
by colubridae
Fri Jan 15, 2016 3:56 pm
Forum: Display
Topic: Serial I2C LCD 1602 Module (HCARDU0023)
Replies: 44
Views: 30076

Re: Serial I2C LCD 1602 Module (HCARDU0023)

Hi Andrew. Thanks for the prompt reply. FYI. The cables and connectors have been cannibalised from an old keyboard. They are approx 30cm for SDA/SCL and approx 10cm for VCC/GND I have disconnected each one separately and tested the LCD/arduino setup. With the GND disconnected the screen flashed at a...
by colubridae
Fri Jan 15, 2016 11:52 am
Forum: Display
Topic: Serial I2C LCD 1602 Module (HCARDU0023)
Replies: 44
Views: 30076

Re: Serial I2C LCD 1602 Module (HCARDU0023)

Hi Andrew In answer to question. I deleted the library called "HCARDU0023_LiquidCrystal_I2C_V2_1" and just to be sure I recompiled the sketch form the first post at the top of this topic. the compile failed with a "no such library" message. I then redownloaded the zipped file from the first post at ...