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Then, no matter how much toner you actually have left, you have to get a new toner (or at least a new toner chip).Īll of that is documented very well on the link I posted above. You are also correct in that the toner chip comes pre-programmed with a number that the printer deducts from (and writes back to the chip) until it is at zero. Yes, I have done this to purchase new toner chips. Something like the amount of pages the printer has done. I'm not sure if you have modules like this because the chips cannot be re-programmed and the toner level is estimated by the printer firmware. However I can't seem to get it to work with mine and could use some help from people much smarter than me.ĭoing a google search you can find pre programmed modules that you replace the old one with. Is this not possible to just scan the I2C bus until you find the device? It seemed to work for this guy. This worked excelently I found the chip at the first try." My idea was to try to read from each possible address and to listen for answers.
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So firstly I wrote a function to scan for devices on the bus. On Wikipedia I read each device on a I2C-Bus has it's own 7-bit address and to communicate with it you have to know this address. "I never used the wire library before and I was surprised by the small number of methods it has. He wrote some Arduino code to scan the I2C bus until it finds a device: He has a toner chip that he knows nothing about. If you went to the link, you would have seen where they guy on the blog is in the same boat.
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Then read up on the Wire library, you'll need it to send the I2C commands.Īs I stated, I cannot find any info on this chip or the new ones (they are black epoxy covered).
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