A rotary encoder has 3 pins usually called A, B and C.
PIC AND EEPROM PROGRAMMER CIRCUIT SERIAL
The project is based around a 24 position rotary encoder, 16 LEDs arranged in a circle around the encoder, an A6276 16 LED serial driver IC and the PIC182550 microcontroller. When using rotational encoders in projects it's possible to use the same encoder to represent a number of different input types, however this requires some form of feedback display to let the user know what information he is inputting and the 'position' of the encoder. Rotary encoders not only provide 360 degrees of rotational freedom they also allow digital positioning information to be gained without the use of analogue to digital converters (ADCs). They are like potentiometers expect of digital nature and unlike analogue potentiometers they never wear down. It is only for convenience sake that i am trying to get the clip to function without damaging or corrupting the data.Rotary encoders are very versatile input devices for microcontroller projects. and that ultimately is what i am trying to achieve although the info on in-circuit programing is very scarce.most people even those with extensive electronic background say simply to remove write and replace. however i have seen it done with an soic clip wired into a dip adapter connected to the programmer. i have no problem with flashing the eeprom when it is not connected to the pcb. It contains the data file of which immobilizer transponder key codes are stored. it is a toyota ECU and it is an 8 pin smd eg. Thanks guys this is the sort of response i was looking for. You can't do it by following instructions online, you need to have practised and understood the basics first In the process you'll incidentally learn what an oscillator is, but also everything else you need to know to do what you're trying to do. Build a few circuits, make lights go blink blink blink.
Obtain a book on developing with microcontrollers, eeproms and other embedded systems.
If you want to gain the experience necessary to do what you want, you need to start at the beginning. Someone who told me what a circuit breaker is might think they were being helpful, but really they'd be telling me enough to get electrocuted.
It's like if I came in here and said "I'm trying to rewire my house, I just need to know what a circuit breaker is". If I tried to build a building without knowing what a brick was, I'd hope someone would tell me the same. I'm not putting you down, it's just how it is. There's a certain level of knowledge and experience required to reprogram EEPROMs in-circuit, and, without knowing your actual level of experience, I know that it's impossible to have attained that level of experience without learning what an oscillator is.
PIC AND EEPROM PROGRAMMER CIRCUIT HOW TO
I could tell you what an oscillator is and how to short it, and that would be giving you just enough rope to hang yourself. The most helpful thing we do in here is recognise when someone is attempting to do something they don't yet have the skills to do, and advising them to go back and consider other options, including outsourcing and canning thw whole project. That was a helpful comment, it just wasn't what you wanted to hear.