Vedran Posted October 2, 2003 Report Share Posted October 2, 2003 Hello!This questions are about "8 way relay board " project!!!Where to put: 1 x 1N4004 Diode -> i can't see it on pcb?What is:1 x 0.01uF (approx) Green Cap -> is it block capatitor -II-and where is it on pcb?What is:1 x 1 amp Bridge Rectifier -> is it Greatz???I would like that you send me schematics so i can see better where which part is connected... this way it is not so clear to me!I would like to make this interface so much! Please explainit a little more! I don't understand this part of pcb???Please help me to figure it out what parts are here....Thanks!!Project Link: http://www.electronics-lab.com/projects/pc/005/index.html Quote Link to comment Share on other sites More sharing options...
mixos Posted October 2, 2003 Report Share Posted October 2, 2003 There must be a typographical error about 1N4004. It's place is where 1N4001 is on pcb. In other words on pcb 1N4001 -> 1N4004.The 0.01uF capacitor is near 7812, the green one. It's a tantalium or ceramic one. Nothing special.The 1A Bridge Rectifier is nothing special either. It's just a plain 1A Bridge Rectifier like below:The botton one fits better in pcb.I am sorry, but there are not schematics available.I attach you the part that you don't understand. Is it clear now? Quote Link to comment Share on other sites More sharing options...
Vedran Posted October 2, 2003 Author Report Share Posted October 2, 2003 Thanks you explain things excelent! I get it all... just one more little question...Where I must conect these + - 12v points?Or they are not connected?I am already shame for buging you so much :-[Thanks! ;) Quote Link to comment Share on other sites More sharing options...
mixos Posted October 3, 2003 Report Share Posted October 3, 2003 You are welcome Vedran, don't be shame :)At the + - 12v points appears such a voltage if your power supply work ok. You don't need to connect anything if you plug at the Power Socket the output of a power transformer of 12V.Otherwise if you don't connect a tranformer and you have a power supply of 12V that don't need a rectifier (has already) you can connect it at + - 12V points without connecting nothing to the Power Socket.I other words this is to alternative power the circuit from an already rectified source. Also you can take the + -12V from there if you want to use them somewhere else and the amperage is sufficient. Quote Link to comment Share on other sites More sharing options...
Vedran Posted October 4, 2003 Author Report Share Posted October 4, 2003 Thanks!! I think all is clear now to me!I bought today 2 relays for a start and other parts!I will just have to rebuild PCB a little cause I have Schrackrelays that are diferent from those ones on the picture!Can't wait to see it working.... ;DThis site rules!!!!Bye :D Quote Link to comment Share on other sites More sharing options...
buctuong Posted October 13, 2004 Report Share Posted October 13, 2004 i has made th 8 way relay board,it's okbut i want to know source code of the softwarebecause i want to develop itthanks ! Quote Link to comment Share on other sites More sharing options...
hassan1980 Posted March 27, 2005 Report Share Posted March 27, 2005 Hi, ThereFor the project for 8way relay board. Can you made it to control more than 16 Devices?if you use decoder it is very good this mean that you have to use four outputs in the parallel Jack for the PCI am need this, Would you please help me?Please Write to me soon Quote Link to comment Share on other sites More sharing options...
ante Posted March 28, 2005 Report Share Posted March 28, 2005 Hi hassan,With 8 relays you’ve got 8 bits, sure you can control more than 16 devices! Quote Link to comment Share on other sites More sharing options...
trampe Posted April 1, 2005 Report Share Posted April 1, 2005 Try this software for the relayboard.http://www.kemo-electronic.com/de/module/m125/index.htm (RelaisTimer11).You can with a decoder control up to 255 Relays.Have fun Quote Link to comment Share on other sites More sharing options...
ArabicEdison Posted January 22, 2006 Report Share Posted January 22, 2006 Q1:You can with a decoder control up to 255 Relays.Have fun hiii'm arabic man , by chance enterd to this formwhile i secking(searching) about control up to 255 Relaysif fact ,I can not understand the languge on the linkTry this software for the relayboard.http://www.kemo-electronic.com/de/module/m125/index.htm (RelaisTimer11).You can with a decoder control up to 255 Relays.Have fun4 that . i hop any one help me please msg me fast=================Q2:i can make software on VB to controling 8relays , "useing input.dll" on xp windows|but sometime the software can not control a circuit more arabic forms says the controling under windows xp is not work ok!how i can make a good software can runing under all windows (98/2000/xp/2003)please msg me (pics of circuit )fastplease :'( Quote Link to comment Share on other sites More sharing options...
Staigen Posted January 22, 2006 Report Share Posted January 22, 2006 Hi there ArabicEdisonI can not understand the languge on the linkIf you click on the "home" button you can change to an english version of the site( i hope you understand the english language) ! ;D//Staigen Quote Link to comment Share on other sites More sharing options...
the lover1 Posted March 4, 2006 Report Share Posted March 4, 2006 i want to know the dimension of the PCB in order to make oneplase type it in mmthanks Quote Link to comment Share on other sites More sharing options...
ziko Posted July 31, 2006 Report Share Posted July 31, 2006 i build the pcb but when i connect to the parrarrel port all the 8 relays stay on, the program have no effect on the output.i use uln2804a and not iln2803 as in the list???thanks for all helpiko Quote Link to comment Share on other sites More sharing options...
audioguru Posted July 31, 2006 Report Share Posted July 31, 2006 The inputs of a ULN2804A are not designed for 5V logic from a computer. It is designed to be driven by Cmos logic that uses a higher supply voltage.I copied this from the datasheet: Quote Link to comment Share on other sites More sharing options...
Herman the German Posted February 22, 2007 Report Share Posted February 22, 2007 i want to know the dimension of the PCB in order to make oneplase type it in mmthanks1 inch equals exactly 24.5mm. Figure the numbers in mm accordingly, lazy guy! Quote Link to comment Share on other sites More sharing options...
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