Replacement for 5pin Currietech Display/power/mode selector

[GooseLoyal]

I am helping a friend find a suitable replacement for a 5pin Currietech display/power/mode selector.

Its for an izip e3 zuma 2015. I am trying to understand if these electronic components are interchangeable with other 5 pin display/power/mode boards like an 880 Unit, which looks incredibly similar. Here is the generic unit i hope is a replacement: https://amzn.to/2WiESpZ

I'd like to avoid soldering the surface mount components on the old board that was destroyed by a lack of insulation from the elements. My electronics skills are good, but my knowledge on ebikes a little lacking. I'm hoping that the majority of these boards are swappable, and communicate via a fairly universal serial connection/communication.

If it helps, the izip e3 zuma 2015 has a PAS, and a throttle, as well as the dashboard with power button, and mode selector.

Any enlightenment or advise towards a solution would be greatly appreciated.

Ben

 

[docw009]

You will have to identify the wire functions anyway. Why not just splice the cable?

Five pin displays usually have these pins, and hopefully they give you a pinout. (ha ha).
- Battery Power
- Start (connects to above to power up controller)
- TxD serial data line
- Rxd serial data line
- Ground
This allows the display to know the battery voltage. It powers its onboard electronics off a DC-DC converter. It uses the data leads to command pedal assist level.

Some LED displays are 5 pins with a serial interface like the above. Some are four pins, and instead of TXD/RXD, they put out a DC level on the 4th pin...1V=PAS level 1, 2V = PAS level 2, 3V=PAS level 3, and 4V = walk mode. Both of these LED types will have the voltage display correct only for a single voltage they were intended to use, but often work on higher/lower voltages..

Some real jerks in the industry put a 5 pin connector on an analog display and don't use the 5th pin. This gave me great confusions when I once tried to splice a 4 pin 810LED into a 5 pin line. Other jerks sell the same display in both a 5 pin and 4 pin version, with no markings, and the 5pin is truly digital while the 4 pin is analog. Guess I shouldn't purchase from jerks.

Just to warn you of the confusion common to the "hey-he's-making-money-let's-copy-it" syndrome in the wacky world of chinese ebike parts.

Also, there's mo guarantee that Currie and the 880 part uses the same data protocol, but it's not expensive and maybe worth the try. If you want to wait a month, you can save a few bucks and get it off ebay.
https://www.ebay.com/itm/LED880-36V-48V-Electric-Bicycle-Display-e-bike-Controller-LED-Bike-Panel-ebike/223302536156?hash=item33fdde4bdc:g:Og0AAOSwlAFcJu9i&frcectupt=true