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Originally Posted by porsche959
just a quick update and some photos.
right now just waiting for the BLUE BOARD from ali express: https://www.aliexpress.com/item/Orig...88274c4d4MnrUF
I am not sure if it will work but the RED BOARD is confirmed DOES NOT WORK, as Sensible noted earlier. it will not read the chip on the speedometer. see ya later $25. crossing my fingers that the BLUE BOARD will.
I had to buy header pins and blue wires in order to connect the clip to the RED BOARD - practiced some soldering during my down time.
Also, getting the needles off were tricky - did not work with fork, plastic remover, etc. I had to use a 3 inch pocket knife and some paper on the face of the dial gauge (similar to removing watch hands) - i felt like the plastic needles could have snapped at any moment.
the key is to really get underneath the circle part of the needle (so the sharp part of the blade is touching the stem, and gently but firmly snap it off.
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Hi Porsche, just had to say this thread and a few others linked are an amazing resource.
I have an e46 and do a lot of e46 work and the e46 clusters also use the M35080 variant chips and it is so hard to find open and candid conversations for this type of stuff so its a breath of fresh air to see this going on.
i too purchased the black box R270 that came with a red board. the selling ad stated "Works with all M35080 chips for erase, write and quick erase"
for e46 clusters it is much more difficult to solder to the cluster directly with the 26 pin connector because it requires soldering to several TINY legs of an NEC MCU and it looks like on an e90 you dont have to worry about that.
thus i have chosen to desolder my M35080 chip.
im using a test e46 cluster to practice on and have removed my chip but discovered last night that no matter the orientation i have the chip inside the zif socket adapter, the r270 software always says "NO MODEL" if i choose READ and say YES to CHECK PIN STATE. if i choose NO to check PIN STATE, I just get an error of cant read.
my r270 did not come with any documentation, manual pdf etc.. i am stil having the most difficult time finding something as simple as an R270 26 pin connector pinout guide. like nothing lol.
the best i could find was on the Digital kaos forum where someone took a picture of their 26 pin connector and labeled each wire with little tiny pieces of paper of what they were like VSS, VCC etc but its hard to read from the angles.
how did you know what your pins are?
you made an 8 pin connector and soldered/connected to your Adapter board to the U2 pins but how did you know what each of those U2 pins were?
I have the pin out sheet that for the M35080 ship that shows what pins 1-8 are but besides that I cant go further because I dont have the pinout for the u2 section or the 26 pin r270 connector.
do you know if its possible to use the RED board with the U2 connection of the SOP8 test clip?
for now i was going to just solder wires from the 26 pin connector directly to each leg of the m35080 chip just so i can read and erase and write but i cant even do that with out a pin out sheet of that connector.
thanks for any help and advice with this.
Quote:
Originally Posted by Sensible_
Yep, 9 and 18. I use female to male header pin adapters to extend the pins out of the connector housing, then just croc clip onto them to my 12v supply. Any 12v should be good. Doesn't have to be fancy. I have a dedicated bench supply.
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I saw in the past where you said just use a SOP8 test clip and it does make sense, do you have a recommendation for a good quality one? looking online it looks like people continually have issues with connection of their clips slipping off, etc but its hard to take those peoples word because they could just have unsteady hands or not being as careful/precise etc
for me i want to use the SOP8 test clip on my e46 cluster leaving the m35080 chip in place since soldering to the tiny legs of the NEC MCU on the e46 cluster is a little beyond my clumsy hands.
do you know if you have to use the PCB adapter board? is there a reason why people arent connecting the 8 pins from the SOP8 test clip directly to the associated wires of the 26 pin rainbow wire connector? made me think that the adapter board was doing some fancy crossing of wires for some resistance somewhere that you dont get with direction connection.
and lastly, does anyone have any reason why the red board doesnt work and the blue one does? i emailed the ebay person last night about this and they are adamant red or blue doesnt matter even though online it has been proven so no free blue board for me there.
would love to know if I could still use the red board with the U2 points and the SOP8 test clip or if im just going to have to shell out for the blue board or solder directly to the 26 pin connector.
thank you so much for any and all help/advice.