I have a LCD module 2x40. It has 2 rows of header pins on one end for a total of 14 pins.It has 2 rows of header pins on one end for a total of 14 pins. The main chip is SED1278F. The PCB appears to be made by Han Dok Co. LTD and has the following numbers on it. kj-2v1 94v-1 p32002 and 003-023668a My question is does anyone have a pin out for this critter? Is this compatible with the standard Hitachi LCD driver that I'm already familiar with? Wes - NOTE NEW EMAIL ADDRESS kd4rdb@qsl.net http://www.qsl.net/kd4rdb Where am I? http://map.aprs.net/kd4rdb-9 http://map.aprs.net/kd4rdb-10 -----Original Message----- From: Darren King To: PICLIST@MITVMA.MIT.EDU Date: Wednesday, December 08, 1999 1:51 PM Subject: Re: Microchip Appnote Dimmer Problem. >Hmm.. OK this is what I thought kind of. I was confused by the White >(return) after the triac. However I guess thats pretty simple it just goes >back to the WHITE on JP2 and the only reason for that is that the Vcc >Circuit requires it to produce the +5V for the MCU to run. > >Sound right? > >The diode network that this appnote talks about inside the 12C508 that >protects it from the large AC Current which gives it Vdd+0.7v that kind of >thing. Does this exist in all PicMicros? > >Darren King > >----- Original Message ----- >From: Fansler, David >To: >Sent: Wednesday, December 08, 1999 10:06 AM >Subject: Re: Microchip Appnote Dimmer Problem. > > >> Darren - I do not pretend to be an expert - but here is what I see. >> 1. The schematic does not totally match the article >> 2. The load would go between Hot Out and Hot In. >> 3. You would supply a Neutral (white wire) to Return. >> 4. You would supply Hot (balck wirefrom power company) to Hot In >> 5. Ground (green) is a good idea. It can be tied to Neutral (which >is >> done in US breaker boxes). >> 6. Vcc is generated by the circuit above the PIC (RV1, R1,2, C1-3, >> D1-3) >> 7. I would take JP1 to be an external input to allow control of the >> circuit by an outside source (another PIC, automation system, etc.) >> 8. While simple, a fair warning is given in the article that this >> circuit has no isolation from the AC main and therefore can bite you! >> 9. If used for lighting purposes, this circuit will produce filament >> hum at low light levels (larger filaments hum more) A large choke in line >> with the load will kill the hum. >> >> David >> >> -----Original Message----- >> From: Darren King [mailto:darren.king@SYMPATICO.CA] >> Sent: Wednesday, December 08, 1999 2:44 PM >> To: PICLIST@MITVMA.MIT.EDU >> Subject: Microchip Appnote Dimmer Problem. >> >> >> http://www.microchip.com/Download/Appnote/Category/rDesigns/40171a.pdf >> >> >> I have looked at the above 100 times and I'm still confused. I don't >really >> want to build this circuit without understanding it. I really hope >somebody >> could help with this one. I'm not familar with the Hot in - Hot >Out -Return >> (White). When I see White I know what that means. So which of the hot in >> and hot out is supposed to be the black? Is the green wire used? Does >the >> load hook up between the Hot Out and the Return? What is Vcc supposed to >> be? Is this where I hook up the load? What is RV1? As you can seem I'm >> not an electronics wiz, but understanding this would help out greatly. As >> you can read, I'm really lost. >> >> Darren King >> > __________________________________________ NetZero - Defenders of the Free World Get your FREE Internet Access and Email at http://www.netzero.net/download/index.html