Products > Test Equipment
Replacing OLED screen on an Agilent U1253A Multimeter
exe:
Am I correct that the issue of mirrored screen could be easily fixed in firmware (possibly just in initalization code), it's just keysight is not interested in it?
wraper:
--- Quote from: exe on October 24, 2022, 12:27:50 pm ---Am I correct that the issue of mirrored screen could be easily fixed in firmware (possibly just in initalization code), it's just keysight is not interested in it?
--- End quote ---
Yes, it can be easily fixed in firmware. A few lines of could would do the job. U1253A was discontinued a long time ago, so don't expect any. Dunno about U1253B and U1273A made in recent years, they actually could use display with a different controller as SSD1303 seems to be either obsolete or very scarcely available.
flyglas:
--- Quote from: --Oz-- on August 27, 2022, 04:10:15 am ---Ordered boards from china and got them in 14 days. Will shoot for next week to assemble and test.
--- End quote ---
I have also ordered some circuit boards. If someone comes from Germany, I can send him some. Just send me a PN.
gamalot:
Hi everyone, I need some help from you guys.
I'm still working on my U1253 OLED replacement, the first version of the PCB has some minor flaws, but it seems like all the expected features have been implemented.
My goal is a "perfect" replacement that should be better than the original one. Not just display all information correctly, but it also has a customizable splash screen and lower power consumption.
Preliminary test results show that my design consumes about 7mA less current than the original (31mA vs 38mA, battery voltage 9V, brightness setting high, DCV 5V range, reading 0.0000).
I watched Shahriar's (The Signal Path @Hugoneus) video. His meter with the replacement display draws more than 40mA, but one test obviously isn't enough, I really want more.
I would be very grateful if you could measure the power consumption of your U1253 multimeter (either the original screen or any version of the replacements) under the same conditions and post your test results.
thank you very much!
--Oz--:
@gamalot, you can double your battery run time by using a 650~750mAh li-ion 2S 9v battery.
And could do more capacity with pouch lii-on cells.
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