- #Clp 300 samsung driver for mac serial
- #Clp 300 samsung driver for mac full
- #Clp 300 samsung driver for mac software
Here is where things got really interesting… The Discovery
#Clp 300 samsung driver for mac software
I hooked up my Bus Pirate to the I☬ bus, and was going to start writing some software to accomplish this. I needed a better way to analyze and flash the entire address space on the EEPROM. If the numbers were stored as floating points, this could explain why they were harder to see, as they may not have changed by exactly 1 like the page counts did. Apparently that percentage is a stored value, not one that is calculated on the fly based on the page count. Also, the low-toner warning lights remained lit for all colors. Unfortunately, after printing the configuration report again, the “Toner Remaining” percentage hadn’t updated for any of the cartridges. I was able to successfully write zeros to all of the incrementing memory locations. Using our analogy from before, I hoped this would reset the “odometer” and register the tank as full. I could use another Arduino sketch to write zeros back into those locations. Now I had a list of memory locations that (I assumed) stored the page counts. By searching the dump file for these numbers (after converting them to hex), I was able to track down which memory locations were used to store which counts. This report includes several counts, including the counts for our toner cartridges and the printer itself. This is done by holding down The Button until the green light flashes rapidly.
The next thing I did was print off the printer’s “Configuration Report”. Like I had suspected, there were lots of locations that were incrementing. I looked specifically for writes that looked like they incremented a value. I then compared the outputs using a diff program. So, I would dump the EEPROM, print a page, and dump it again. This allowed me to see a before and after memory snapshot.
#Clp 300 samsung driver for mac serial
I wrote an Arduino sketch to dump the entire memory of the EEPROM to the serial port. I was able to catch the first handful of writes, but there were so many that I decided to take a slightly different approach. SniffingĪfter doing some homework, I decided to try watching the I☬ traffic with a logic analyzer to see what memory locations were getting updated on the EEPROM after each print. If that last sentence meant nothing to you, you might want to skip to the “Reset Procedure” section… It is going to get technical for a while. What I discovered is that the page counts are all stored on an EEPROM chip that is attached to an I☬ bus (an ST M24C64, in this case). Not wanting to start from scratch, I got to reading. In fact, there is plenty of published hackery surrounding this printer. Unsurprisingly, I am not the first person to try to address this problem. Knowing all this, the only thing standing between me and cheap toner refills was finding a way to reset the counters. It is like putting gasoline in your tank, but not being able to start the car until the odometer is reset. Second, refilling the cartridges with toner purchased in bulk does nothing to reset the accumulated page count. First, toner is likely being wasted (which irks me). The same can be said for the way modern laser printers track toner. The end result you either waste gas, or run out. Depending on several factors (driving style, load, tire pressure, etc), the amount of fuel consumed in a mile can vary wildly. Why does this matter, you ask? Essentially, it would be like having a gas gauge in your car that only tracked how far you had driven, not how much gasoline was left in the tank. To my knowledge, the cartridges don’t have a way to sense how much toner remains. The printers then use these page counts to project how much toner remains in the cartridge. Imagine that!? Apparently, it is now common practice for printers and even toner cartridges themselves to count the number of pages that have been printed in order to track the consumption of toner. Since I last purchased a laser printer (my circa 2001 LaserJet 1200 is still kicking) the industry has changed. If you’d prefer to cheat, you can skip straight to the good stuff. This is going to be a long post, so strap yourself in. Not being the type of person who so easily bends to the will of “The Man”, I set out on a journey to find a cheaper source of toner.Ī “journey”? Really? As it turns out, the answer is yes but in the end it was worth it. To put things in perspective, the printer itself could be acquired for less on eBay.
#Clp 300 samsung driver for mac full
At the time, the price of a full set of toner cartridges was around $150.
Things were going great until it came time to replace the toner. I am the happy owner of a Samsung CLP-315 laser printer.
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