Tagged Questions

1
vote
0answers
44 views

Arduino - Solenoid Valves and Pumps Control (Relay Shield & Motor Drive Shields)

I’m trying to control two Diaphragm Pumps (12VDC/4.3W) and five Solenoid Valves (24VDC/10W) using Arduino Uno & Arduino Display Module. I know there are many different ways to control these ...
1
vote
0answers
71 views

16 x 2 LCD not displaying analog inputs fed to ATmega168

I am experiencing some problems getting a display of analog inputs(current and voltage) fed to ATmega168's A0 and A1 respectively. I believe the wiring and the program are correct since the same ...
0
votes
1answer
40 views

DFRobot LCD shield minimum pin connections

I am connecting a DFRobot LCD shield (http://www.dfrobot.com/index.php?route=product/product&product_id=51#.UYWE0itxsVk) to a bareduino. There will be no shield placed on top of the LCD and am ...
0
votes
0answers
53 views

TFT LCD shield doesn't work properly

We have bought TFT LCD shield 2.6. And got library for it by this link: TFT LCD Library When we try to execute graphicstest example, it shows setup part. But doesn't show loop part. What can be the ...
2
votes
2answers
30 views

Interfacing a 16x2 Character LCD to the Arduino

A friend recently gave me a set of three (old) 16x2 LCD displays. (datasheet) However, I'm having difficulty thinking through how to connect one to my Arduino. Particularly, each LCD has 14 (!) ...
0
votes
0answers
71 views

OLED Custom Character not being displayed correctly on Arduino Uno? Too Many?

So I have a bunch of custom characters and they are created like this ...
2
votes
2answers
155 views

Applescript to Arduino LCD only works with Serial Monitor

I spent all day trying to figure this out and finally got somewhere that atleast lets me know that I am doing something weird... I am trying to send data to my LCD Screen on my Arduino Uno, but for ...
-3
votes
1answer
200 views

Arduino 3 digit LCD calculator

We would like to build a calculator using Arduino which uses 3 digit LCD and a keypad similar to digital phones. (# for plus , * for minus) Which components and way is good enough to not to run out of ...
-3
votes
1answer
78 views

Problems With The Desktop Contemplator Code [closed]

I cannot get the ContemplatorNV.ino code to down load from the Nuts& Volt article. I have tested the complier on an Arduino Uno on code I know works. This at least proves the compiler, USB ...
3
votes
3answers
115 views

Freetronics LCD pins all used up

I am new to electronics and recently bought Freetronics Arduino experiment kit with the Freetronic LCD shield with keypad. I have installed the LCD shield and now I realize I no longer have any pins ...
3
votes
2answers
251 views

Reverse engineering a 12 pin LCD?

I just found a broken "laser projecting alarm clock". I took it apart, and am interested in only the laser projection arm. This consists of a laser diode (although I suspect that this is actually just ...
1
vote
1answer
103 views

Arduino LCD displays weird character after a while

I having some issues with an LCD. I have made a climatic control system that controls some relays (output) and receives some input from water pipe sensor and ambient temperature/humidity. This was ...
2
votes
1answer
305 views

Interfacing with the kind of LCD found in thermometers

I have been experimenting with various sensors recently, and one common functionality I have needed with all of them is the ability to see the data being measured. Thus, I am considering attaching a ...
2
votes
3answers
341 views

Microcontroller or arduino alternative for small cell-phone sized device?

I am doing a project in which I need to read RGB values from a color sensor TCS230 and send it to a microcontroller and use an linear equation to get glucose value from it and display it on an LCD.As ...
3
votes
2answers
473 views

Identifying Pins of an Unknown LCD

I got a LCD removed from some device. I need to check whether it is working. But the thing is I only have the LCD, no datasheet or any documentation regarding that. I have an Arduino mega 2560. I'm ...
0
votes
0answers
210 views

Large Arduino widescreen LCD [closed]

I've been looking for a fairly large (50cm width 30cm height would be ideal) widescreen LCD that's compatible with Arduino out of the box. The largest I can find are around 15cm. Anyone know of one?
0
votes
0answers
577 views

LCD not work with Leonardo

It's about my Sainsmart LCD shield with a 16x2 display. The display worked fine with my software. The "hello world" schetch also worked fine when it is connected to Arduino Uno. But when I unplugged ...
-7
votes
1answer
86 views

Compatibility and hookup question

I am considering connecting my Arduino UNO and Sainsmrt Sensor shield V4 to this TFT LCD . Are they compatible? If they are, how am i supposed to wire them up?
0
votes
1answer
211 views

Using a specific LCD with an arduino

I have the following lcd (DisplayTech 128x64 COG STN Y/G) unfortunately after reading the data sheet I still have no idea how to hook this up with an arduino. Could someone either assist in explain ...
4
votes
1answer
1k views

Debugging a 16x2 LCD Display on an Arduino

I have a standard 16x2 LCD display (I believe it is Hitachi HD44780 compatible - see summary and specification below), hooked to an Arduino Uno using 4 data pins, as described here, though I've added ...
2
votes
1answer
4k views

How to connect an Arduino UNO to an LCD 1602

I got an Arduino UNO and a 16x2 alphanumerical LCD on hand, the LCD looks like this: I just have no clue about how to connect these two together. I got some Dupont Line, just want to know how to ...
1
vote
2answers
617 views

For the Arduino Uno, should I use a 3.3V or 5V serial LCD?

I am just getting started with Arduino, so please forgive me if this is a stupid question. I was searching for serial LCD displays, and found them in two variants: 3.3V and 5V. I looked on the Uno ...
0
votes
2answers
926 views

LCD Programming with Arduino

I'm trying to get my LCD to display "Voltage= (variable)". I have it programmed to write the text and I have a pot wired to my arduino and I'm trying to get a voltage number to come after the equals ...
2
votes
0answers
901 views

Arduino Uno + Ethernet Shield : 16x2 LCD Not Initializing

I have a 16x2 LCD shield that I have tested to be working fine when connected to arduino uno using the following pin connections: 3: RW 5: EN 6,7,8,9: DATA(4 bit mode) The contrast is nice and dark ...
2
votes
3answers
766 views

Processing NTSC video feed for SPI display

I have recently started a project where I want to use this small camera and and have it relay the live video to a very small color LCD, like this one through an Arduino. Unfortunately the camera has ...
1
vote
1answer
289 views

What happens when running a LCD at lower clock speed

I need to display a still image (just the same grey color all over, so no need for difficult calculations what to display where) using only an Arduino Duemilanove (ATMega 328) and a Sharp LCD panel ...
0
votes
2answers
1k views

How to drive scavenged TFT screen?

How can I drive a scavenged TFT screen, from an MP4, without its datasheet? I'm thinking about making a low cost bluetooth wrist watch to check my messages on my phone on the go. I'm going to ...
1
vote
2answers
1k views

How can I interface bare glass LCD to an arduino?

I am looking to interface a Casio 991es calculator's LCD to arduino. The LCD is just two bare glass plates glued together with lot of pins. I dont find any driver chip with it. How can I interface ...
5
votes
2answers
1k views

Arduino - Multiple button event with lcd shield

I'd like to detect two buttons being pressed together with the Arduino LCD shield. Does anyone have example code of handling multiple button events? I need an event when both the Up and Down buttons ...
6
votes
7answers
3k views

Arduino hooking up LCD without POT

I am using this LCD: Plus I am using an Arduino. I am trying to hook this up but without a 10K pot. How is this possible? Every tutorial I found involved the 10K potentiometer
2
votes
3answers
3k views

Hooking up an LCD to Arduino Diagram

Has anyone got a really clear diagram of the way to link up a 16x2 LCD screen to an Arduino? Basically I have an LCD for which the back light is coming on, but I am not getting any words appearing on ...
5
votes
6answers
623 views

Serial Enabled LCD

What sort of LCD should should i be using to go with my Arduino? I have used the HD44780-compatible LCD in the past, but heard that the Serial Enabled LCDs make life a lot easier.