BD EHC undressed!
- Thread starter MogwoprJr
- Start date
erldawg
Guru
Try bigdogpartsking he may or might be able to point you in the right direction.
A quick component list for the power board - or the top board with the 50 and 36 pin connectors on it.
1x Infineon BTS711L1 - Smart Four Channel Highside Power Switch
5x Infineon BTS442E2 - Smart Highside Power Switch
2x Infineon BTS409L2 - Smart Highside Power Switch
4x Tycho Electronics Polyswitches
- 2x .900A
- 1x .060A
- 1x .600A
2x Fairchild V164 - 8-Bit Serial-In, Parallel-Out Shift Register
8x - yet to be identified SOT-23 semiconductors - I'm waiting on access to the microscope!
2x - unidentified SMD caps
Resistors SMD:
16x 101
4x 471
4x 103
3x 152
1x 251
1x 102
1x 331
1x 221
18x 3mm led's
50x D-sub 50pin male
36x Combo-D 36pin male
I am trying to trace everything out on the main board, or what I call the power board, and draw up a schematic. In this process I'm trying to learn Eagle CAD as well, so it might take a while.
The next board is the microcontroller board, or the bottom board. I'll get a list of components for that when I get to the microscope.
- side note -
The datasheets for Tycho Polyswitches indicate that they are NOT supposed to be potted. They require room for expansion and need to be able to dissipate heat or they may have reliability issues. I suspect this may be a potential point of failure (among others). I noticed that on the WP module the polyswitches are only potted at the base of the polyswitch allowing them to be exposed to air.
- Travis
1x Infineon BTS711L1 - Smart Four Channel Highside Power Switch
5x Infineon BTS442E2 - Smart Highside Power Switch
2x Infineon BTS409L2 - Smart Highside Power Switch
4x Tycho Electronics Polyswitches
- 2x .900A
- 1x .060A
- 1x .600A
2x Fairchild V164 - 8-Bit Serial-In, Parallel-Out Shift Register
8x - yet to be identified SOT-23 semiconductors - I'm waiting on access to the microscope!
2x - unidentified SMD caps
Resistors SMD:
16x 101
4x 471
4x 103
3x 152
1x 251
1x 102
1x 331
1x 221
18x 3mm led's
50x D-sub 50pin male
36x Combo-D 36pin male
I am trying to trace everything out on the main board, or what I call the power board, and draw up a schematic. In this process I'm trying to learn Eagle CAD as well, so it might take a while.
The next board is the microcontroller board, or the bottom board. I'll get a list of components for that when I get to the microscope.
- side note -
The datasheets for Tycho Polyswitches indicate that they are NOT supposed to be potted. They require room for expansion and need to be able to dissipate heat or they may have reliability issues. I suspect this may be a potential point of failure (among others). I noticed that on the WP module the polyswitches are only potted at the base of the polyswitch allowing them to be exposed to air.
- Travis
Hey Travis, good to hear for you again. while I was roaming thru the form, I ran across another schematic. I don't know if this will help or not.
Attachments
![Wiring[1].png](/data/attachments/9/9713-494b166f7729f18906fae08d6bb93022.jpg)
Thank youHey Travis, good to hear for you again. while I was roaming thru the form, I ran across another schematic. I don't know if this will help or not.
now that I will not be working the night shift I can call you. I'll give a ring this week sometime.
BATMAN2696
Member
Looks pretty straight forward!Hey Travis, good to hear for you again. while I was roaming thru the form, I ran across another schematic. I don't know if this will help or not.
Was thinking about something over the weekend and I have a random question not to hi-jack the thread but I am curious.
Is it possible to buy just the connection that plugs into the EHC? I am specifically looking for the male version. Where the hell would I buy these? And what exactly are they called?
Is it possible to buy just the connection that plugs into the EHC? I am specifically looking for the male version. Where the hell would I buy these? And what exactly are they called?
BigDogBro1
Made in the USA
They are made and sold by Positronic.
They are a complex conector system because of the different pin sizes, connector pin tail length and wire gauge crimp capacity.
Those connectors in the photo are Male connectors...is that what you want? or the BDM harness ends which are Female.
They are a complex conector system because of the different pin sizes, connector pin tail length and wire gauge crimp capacity.
Those connectors in the photo are Male connectors...is that what you want? or the BDM harness ends which are Female.
Last edited:
jimizee028
TRUE COLORS COLLISION
On the above shown pics with the 2 male connectors shown,that was the only thing that went in my EHC...seems one of the pins deteriorated for some reason.To get by until I got a new EHC I used a paper clip in place of the pin and rode the bike all summer..Of course this was way back in prehistoric days when there were things called WARRANTIES and Bike Shops that honored them...Well actually also a Company called BDM that paid them!!!!!!!!!...I like this thread,its very interesting and has my attention,even know I havent a clue what you are saying...I feel the end result will be either we can repair our electronics if they should go on us or replace them with something comprable....keep up the good work......
Nope I'm looking for the Male Connectors. I'm just curious to try something.
I know 05+ they went to a 2 connector Harness, which is the one I am most interested in obtaining. I assume the FI models may have an extra pin or two.
Ill look around for Positronic stuff see what I can't dig up thanks! I might just spin my wheels but just trying to think some things through on all of this.
pknowles
RETIRED
I thought the thinking was done by wire plus.
DRBarnhart
Insert title here...
I'm not sure whether this will help but here's the Postitronic part numbers I came up with:
Power harness = CBD36W4M3600T20
Backbone harness = MD50M3200T20-526.5
I emailed them a couple of years ago to ask how I could get these connectors and never heard back... :down:
Dennis
Wire plus did some thinking, I would say it's fully inclusive. They still make you cut and splice 50+ 22 AWG wires. What if there was a plug and play harness available?
Now granted I would agree cutting and soldering the connections will be 100x more reliable, however if someone is in a pinch I guarantee they would rather have a true plug & play rather than spending 6 hrs cutting wires when the weather is sunny and just save the extra soldering for the winter or a rainy day.
With all that I love my Wire Plus, I installed it over the winter no problems :up: Not bashing the product what-so-ever.
Bummer, looks like your ahead of me on this one as always Dennis :flag:
DB,
Last night I looked through their product catalogs. It appears BDM must have got a custom harness made because their standard 50 pin connectors are shorter but wider than the BDM :bang:
Looks like it will be difficult to get your hands on these without having them make them up, I'm sure they don't do small orders.
Knuckles
Active Member
You can get both male and female connectors for 50 and 36 pin combo-D from Digikey.com.
The 50 pin connectors are just D-sub 50 pin. nothing special. You can get them in solder cup or crimp style connectors, normal/zinc/gold plated.
The 36 pin connector is called a Combo-D. I do not have the model numbers for that right now. It uses 32 pins for signaling and 4x8ga pins for power, same plating options.
Sorry for lack of updates guys, this new job of mine has taken all my spare time. Been playing catchup for the past 2 weeks ... bleh! I'd rather be having fun working on this controller.