Hi Pancho –
Apologies for the late reply; I was busy last night doing what I do – write code. But now I’m here for you.
Trivia about the PCB:
The FET: http://www.irf.com/part/75V-Single-N-Channel-HEXFET-Power-MOSFET-in-a-TO-220AB-package/_/A~IRFB3607
- RDS(on) = 9 mOhms!! 75V limit.
140W (via Digikey)
I don’t know why they bothered to upgrade the caps for this varietal.
The manufacturing date (2010-08-07 stamped on the component-side) of the PCB places it to nearly 6 years old. That might contribute to part of the operation problem; old age and cheap parts.
Programmability: Although the thread suggests it cannot be programmed, knowing what I know now after writing the Windows BT Interface, it’s just a handshake issue. I am 90% certain this MCU was not fused a 2nd time; it just doesn’t makes sense. That said, there is little else information about this short-lived model; Ebikes moved on to another unit shortly thereafter.
Addressing specific items:
1. In this thread we discussed the very same pads. P22 to GND enables Regen. According to Kiwi on Wed Mar 30, 2011:
Kiwi said:
P20 and P21 Are the speed settings. Connect P20 to ground for Speed setting one or P21to ground for speed setting 2 or neither for controller default speed.
3. Pancho, on the Grey wire attached to XC, where does the other end go? Curious.
8. With the 116 MCU, RESET attaches to X3. MBC however attaches to a voltage divider, and on the 116 this goes to C3. Alas – I do not have an Infineon Controller schematic, so I am a bit in the blind. I’m thinking MBC is pulled high to reset the MCU; just a gut feeling from looking at the schematic of the 116. None of this is useful though if we do not know the handshake and protocol. Such an old board; I don’t think anyone on ES cracked this one.
Pancho, Does the controller work at all? Can you tell us a little bit about what it is connected to, motor, type of bike?
Generally, this particular Controller is/was compatible to the Standard of the time which is the same as today for common Chinese controllers:
There should be stub-outs for Throttle, 3-Way Current Control, Cruise, Regen Brake (might be that is a mod on the PCB directly).
With kind regards,
KF