![\"Rexroth](\"http:\/\/www.fartmagnet.co.uk\/warmcat\/wp-content\/uploads\/2014\/10\/WarmCatDisplay1.jpg\")
<\/a><\/p>\nSo, out comes the Arduino and breadboard, and downloaded the datasheet for the display (readily available if you google “DLR2416 datasheet”).<\/p>\n
This display has 7 data pins to receive ASCII code as per the table below, with two address pins to select the ‘segment’.<\/p>\n
After a bit trial and error, and thanks to this website<\/a> by a guy who successfully interfaced with a similar display, I managed to get some characters displayed. I used a 74HC595 shift register to push out the data to the DLR2416, plenty of example code on the Arduino site for help with that.<\/p>\n The above schematic doesn’t show the 1microfarad decoupling capacitor from data to ground, which was required to prevent the display sometimes showing erroneous characters.<\/p>\n I played about a bit more, added a temperature sensor and had it display the current temperature, and managed to have the display scroll text.<\/p>\n Soldered to a protoshield, with space for an additional display if I can find one:<\/p>\n See below for code. Need to get my hands on an additional display to play with!<\/p>\n – Wayne<\/p>\n 2019: I obtained another display and used this project in my first Eagle Cad design. See below code for images. I have a few of these unpopulated PCBs available if anyone wants one, just send me a mail.<\/p>\n [pastacode lang=”c” message=”DLR2416 Display on Arduino” highlight=”” provider=”manual”]\n<\/p> [\/pastacode]<\/p>\n\n\n At work, one of our HPU pump control cards died, the control card looks like this and hosts an interesting four-digit alphanumeric display: So, out comes the Arduino and breadboard,… more<\/span><\/p>\n","protected":false},"author":3,"featured_media":103,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[55,51,41,49,59,43,53,47,57,45],"class_list":["post-97","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electronics","tag-74hc595","tag-alphanumeric","tag-arduino","tag-display","tag-dlr2416","tag-electronics-2","tag-intelligentdisplay","tag-led","tag-shift-register","tag-siemens"],"_links":{"self":[{"href":"http:\/\/warmcat.uk\/index.php?rest_route=\/wp\/v2\/posts\/97","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/warmcat.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/warmcat.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/warmcat.uk\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/warmcat.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=97"}],"version-history":[{"count":12,"href":"http:\/\/warmcat.uk\/index.php?rest_route=\/wp\/v2\/posts\/97\/revisions"}],"predecessor-version":[{"id":105,"href":"http:\/\/warmcat.uk\/index.php?rest_route=\/wp\/v2\/posts\/97\/revisions\/105"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/warmcat.uk\/index.php?rest_route=\/wp\/v2\/media\/103"}],"wp:attachment":[{"href":"http:\/\/warmcat.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=97"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/warmcat.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=97"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/warmcat.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=97"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}<\/a><\/p>\n<\/a> <\/a><\/p>\n<\/a> <\/a><\/p>\n\/\/ DLR2416 Display Driver for Arduino UNO\n\/\/ Code for using a 74HC595 Shift Register to\n\/\/ drive Siemens DLR2416 intelligentdisplay \n\nint latchPin = 8; \/\/Pin connected to ST_CP of 74HC595\nint clockPin = 12; \/\/Pin connected to SH_CP of 74HC595\nint dataPin = 11; \/\/Pin connected to DS of 74HC595\n\nint digitSel0Pin = 5; \/\/ Pin connected to \"A0 digital select\" on display\nint digitSel1Pin = 6; \/\/ Pin connected to \"A1 digital select\" on display \nint displayWritePin = 7; \/\/ Pin connected to \"WR Write\" on display\nint displaySelectPin = 3; \/\/ Pin connected to CS1 on display 0\n \/\/ (we only have one display atm)\n\nint tempSensPin = 0; \/\/ AI for temp sensor\n\n\/\/ Functions\nvoid displayChar(char, int);\nvoid displayWord(String);\nvoid scrollWord(String);\n\nvoid setup() {\n pinMode(latchPin, OUTPUT);\n pinMode(clockPin, OUTPUT);\n pinMode(dataPin, OUTPUT);\n pinMode(digitSel0Pin, OUTPUT);\n pinMode(digitSel1Pin, OUTPUT);\n pinMode(displayWritePin, OUTPUT); \n pinMode(displaySelectPin, OUTPUT);\n Serial.begin(9600);\n}\n\nvoid loop() {\n \n \/\/Select display 0 as we have no other display yet\n digitalWrite(displaySelectPin, LOW);\n \n scrollWord(\" www.WarmCat.uk \");\n delay(500);\n \n \/\/ **** Temp Sensor bit ****\n int tempReading = analogRead(tempSensPin);\n float voltage = tempReading*5.0;\n voltage \/= 1024.0;\n float tempC = (voltage - 0.5)*100;\n \/\/ converting from 10 mv per degree with 500 mV offset to degrees\n \/\/ ((voltage - 500mV) times 100)\n \n int tempCint = tempC+0.5; \/\/ round to nearest whole number; convert to int\n \/\/ and then output to serial for test purposes\n Serial.print(tempCint); Serial.println(\" degrees C\"); \n \n \/\/put int into a string\n char tempChar[4];\n sprintf(tempChar, \"%d .\",tempCint);\n \n displayWord(tempChar); \/\/ display temp\n displayChar(0x1B,2); \/\/display degrees symbol \n \n \/\/ display whirly thing for fun\n for (int spin=0; spin<10; spin++)\n {\n displayChar(0x5C,3); delay(50); \n displayChar(0x7C,3); delay(50); \n displayChar(0x2F,3); delay(50); \n displayChar(0x2D,3); delay(50);\n }\n}\n\nvoid displayChar(char myChar, int myPos)\n{\n switch (myPos)\n {\n case 3:\n digitalWrite(digitSel0Pin, LOW);\n digitalWrite(digitSel1Pin, LOW);\n break;\n case 2:\n digitalWrite(digitSel0Pin, HIGH);\n digitalWrite(digitSel1Pin, LOW);\n break; \n case 1:\n digitalWrite(digitSel0Pin, LOW);\n digitalWrite(digitSel1Pin, HIGH);\n break;\n case 0:\n digitalWrite(digitSel0Pin, HIGH);\n digitalWrite(digitSel1Pin, HIGH);\n break;\n }\n \/\/ set shift register\n digitalWrite(latchPin, LOW);\n shiftOut(dataPin, clockPin, MSBFIRST, myChar);\n digitalWrite(displayWritePin, LOW); delay(2);\n digitalWrite(latchPin, HIGH);\n digitalWrite(displayWritePin, HIGH);\n}\n\nvoid displayWord(String myString)\n{\n for (int x = 0; x < 4; x++) {\n displayChar(myString.charAt(x),x);\n }\n}\n\nvoid scrollWord(String myString)\n{\n int stringLength = myString.length(); \/\/ length of string?\n for (int x = 0; x<(stringLength -3); x++)\n {\n displayChar(myString.charAt(x),0); \n displayChar(myString.charAt(x+1),1);\n displayChar(myString.charAt(x+2),2);\n displayChar(myString.charAt(x+3),3);\n delay(150);\n }\n}\n<\/code><\/pre>\n<\/figure>\n","protected":false},"excerpt":{"rendered":"