Shift Light Issues

[Vpgts076]

Thanks for all the input.

Ill have a play with the resistor values..... I assume the one circled in blue is the one in question.... it is 2W.

What does the pod circled in red do.... I cant figure it out appears to connect 2 pins to + and one to rpm adjustment pod.

[vlad01]

looking at it, i'd say its for fine calibration the main knob to its RPM scale facia plate.

[j_ds_au]

Does this mean there is NO WAY to speed it up as 1.5K out is unusable.

Hi Daniel,

What exactly are you saying, that it's slow to respond, or that the threshold only goes up to 1500 RPM?

Joe.

[Vpgts076]

Does this mean there is NO WAY to speed it up as 1.5K out is unusable.

Hi Daniel,

What exactly are you saying, that it's slow to respond, or that the threshold only goes up to 1500 RPM?

Joe.

Hi Joe,

In the videos I have uploaded if you ease the gas pedal down slowly when it hits the desired RPM it flashes accurately.

But if you rapidly accelerate it up to 1.5K too late.

IE both runs were set to 3K RPM slow run flashed at 3K second run flashed at 4.5K but was still set at 3K.

Check out the Video.

Thanks
Daniel

[j_ds_au]

Does this mean there is NO WAY to speed it up as 1.5K out is unusable.

Hi Daniel,

What exactly are you saying, that it's slow to respond, or that the threshold only goes up to 1500 RPM?

Joe.

Hi Joe,

In the videos I have uploaded if you ease the gas pedal down slowly when it hits the desired RPM it flashes accurately.

But if you rapidly accelerate it up to 1.5K too late.

IE both runs were set to 3K RPM slow run flashed at 3K second run flashed at 4.5K but was still set at 3K.

Check out the Video.

Thanks
Daniel

OK, gotcha (the videos weren't showing on my tablet, only a still image).

Well, I think there's about a 1 second delay in both videos (hard to judge exactly for the first video, since I can't be exactly sure where the threshold is, and I don't have a stopwatch handy). So that's just the way the firmware works. It probably counts the number of pulses in a second, then compares to the threshold (which in this case, is set by an analogue input level from the pot circuitry). Unfortunately, there's nothing you can tweak in the pulse input circuitry (which seems to work OK) to change that.

Joe.

[Vpgts076]

looking at it, i'd say its for fine calibration the main knob to its RPM scale facia plate.

Spot on mate....

[Vpgts076]

OK, gotcha (the videos weren't showing on my tablet, only a still image).

Well, I think there's about a 1 second delay in both videos (hard to judge exactly for the first video, since I can't be exactly sure where the threshold is, and I don't have a stopwatch handy). So that's just the way the firmware works. It probably counts the number of pulses in a second, then compares to the threshold (which in this case, is set by an analogue input level from the pot circuitry). Unfortunately, there's nothing you can tweak in the pulse input circuitry (which seems to work OK) to change that.

Joe.

Joe, agree after a lot of testing it is in the firmware? Any way to open protected ic's or write new firmware?? HAppy to pay....

I can't beleve speco are selling this shit for $120 and its 1-2 seconds out which could amount to a fucked engine...

[j_ds_au]

Joe, agree after a lot of testing it is in the firmware? Any way to open protected ic's or write new firmware??

I'd have to study the datasheet to be certain, but protection is usually just intended to prevent piracy. Most such chips can still be erased, which clears both the program and the protection (allowing you to program new code).

Alas, while PICs do have their merits, and fans, I am not among them. If you'd like to learn, you can find a nice tutorial on the PIC16 here : http://geocities.ws/j_ds_au/electronics.html (The PIC12 has a smaller instruction word, less instructions, but I expect should have a similar architecture and philosophy.)

Joe.