Timeline for Brother DCP-L2550DW Identify Toner Reset TN-760 or TN-730 (Continued)
Current License: CC BY-SA 4.0
21 events
| when toggle format | what | by | license | comment | |
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| May 28, 2023 at 21:05 | answer | added | elmech | timeline score: 1 | |
| Feb 15, 2022 at 15:50 | comment | added | G. L. | Also, there is reference not to use the serial output button. When I get a chance I will update bad or good results. I hope someone with this printer will give it a shot with the proposed data-clock-gnd-vcc layout. | |
| Feb 15, 2022 at 12:07 | comment | added | G. L. | There are few reasons for this to freeze on my part as a noob. I think there’s a good chance the proposed configuration is correct at 3.3v.. and my problem could be that the code needs to avoid address 0-8. Also, might be a bad circuit and I may have fried the chip. And in my original hardwiring I did not use resistors. When I get a chance might debug on a new arduino board rather than UNO R3, attempt with resistors, and ensure code starts address 8 on new chip. Also pressing red button might help due to master-slave technicality. I searched “I2C scanner hang” and lots of theories. | |
| Dec 27, 2021 at 10:42 | history | edited | G. L. | CC BY-SA 4.0 |
Adding microscope pictures
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| Dec 27, 2021 at 10:25 | history | edited | G. L. | CC BY-SA 4.0 |
Adding side-to-side comparison of previous forum image and mine.
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| Dec 27, 2021 at 9:24 | comment | added | G. L. | The manufacturer remains unknown. The only step that can be done is to use a logic analyzer. Those don't come cheap. My next piece would be to work out logic analyzer w/ arduino Uno R3 but that's another rabbit hole. Or take wild guesses (4 factorial?). Also, I am running IC2 Reader that supposedly will test for address. I keep getting outputs for the addresses that aren't quite right (noob mistake?). It has "write" and "read" 128 bytes with no meaningful output. Same output even when I don't plug in the pins so any combination of pins has same output as if i put the contacts in mid-air. | |
| Dec 9, 2021 at 19:58 | comment | added | G. L. | Does anyone know what EEPROM this is? I think it says "2031.. LC 153.. 00" on it. And does anyone know who might be the manufacturer? Once I know that I should be able follow through and read and write to it. | |
| S Dec 7, 2021 at 17:34 | history | suggested | MarianD | CC BY-SA 4.0 |
Some fixes.
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| Dec 5, 2021 at 20:35 | comment | added | Igor Skochinsky♦ | Please edit the question to make it clear what you want to achieve. | |
| Dec 5, 2021 at 20:12 | comment | added | G. L. | I need to read-write from this chip. I need to get the address from IC2 scanning. That depends on knowing the configuration for SCL-SDA-VCC-GND, which is my first question (give me a strategy or hint where to go). Unfortunately location of the data sheet is next to impossible without manufacturer identification (another question if anyone knows who that may be based on the picture). My "serial output" produces nothing when I physically connect the four pins but the code spews out gibberish AFTER I release. I don't know if thats symptomatic for something I'm doing wrong. | |
| Dec 5, 2021 at 19:34 | review | Suggested edits | |||
| S Dec 7, 2021 at 17:34 | |||||
| Dec 5, 2021 at 19:17 | comment | added | Igor Skochinsky♦ | what is your actual question? | |
| Dec 5, 2021 at 17:14 | history | edited | G. L. | CC BY-SA 4.0 |
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| Dec 5, 2021 at 16:06 | history | edited | G. L. | CC BY-SA 4.0 |
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| Dec 5, 2021 at 15:39 | history | edited | G. L. | CC BY-SA 4.0 |
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| Dec 5, 2021 at 15:32 | history | edited | G. L. | CC BY-SA 4.0 |
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| Dec 5, 2021 at 15:19 | history | edited | G. L. | CC BY-SA 4.0 |
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| Dec 5, 2021 at 15:14 | history | edited | G. L. | CC BY-SA 4.0 |
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| Dec 5, 2021 at 15:06 | history | edited | G. L. | CC BY-SA 4.0 |
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| S Dec 5, 2021 at 14:35 | review | First questions | |||
| Dec 5, 2021 at 19:34 | |||||
| S Dec 5, 2021 at 14:35 | history | asked | G. L. | CC BY-SA 4.0 |