Search found 175 matches

by capri_turbo
Wed Aug 19, 2020 7:42 am
Forum: Future Upgrades
Topic: Megajolt LCD display
Replies: 35
Views: 48350

Re: Megajolt LCD display

Thanks Brent, i'm more than happy to share this project and source code on here.

Not used the Capri on the road this year, but running it to warm on the driveway is showing that the display is working very well.
by capri_turbo
Thu Jun 25, 2020 7:43 am
Forum: Q&A
Topic: Serial API for V3.3.1 firmware
Replies: 9
Views: 928

This was my first Arduino project so I'm very plesed with it... looking at RFID immobilisers and GPS stuff at the moment, but as for the Megajolt display, I don't think I'll be developing it any further as it does exactly what I intended it to do. If you want the Arduino code, just ask here and I'll...
by capri_turbo
Sun Jun 21, 2020 3:36 pm
Forum: Future Upgrades
Topic: Megajolt LCD display
Replies: 35
Views: 48350

And the display layout image
by capri_turbo
Sun Jun 21, 2020 3:32 pm
Forum: Future Upgrades
Topic: Megajolt LCD display
Replies: 35
Views: 48350

Just found this thread and realised just how old it is. I have completed a project based on the nixi tube Arduino project and have it up and running off my V3 jolt... The 9 pin serial port had previously been modified to have the TTL level lines output on pins 7 and 8 and 5V on pin 1 for a bluetooth...
by capri_turbo
Fri May 29, 2020 9:16 am
Forum: Q&A
Topic: Serial API for V3.3.1 firmware
Replies: 9
Views: 928

With the assistance of a serial port sniffer, I think I've cracked it.

The tuning software seems to send 's' (0x73) and receives 9 bytes

By Adjusting the pot on my test board I've noted that byte 7 changes with the temperature.

Arduino re-programmed and:
by capri_turbo
Wed May 27, 2020 9:14 am
Forum: Q&A
Topic: Serial API for V3.3.1 firmware
Replies: 9
Views: 928

I've got this far using the $ command (0x24) Is there a different command that brings in the aux data? I've tried S (0x53) but that doesn't seem to contain it either. "Fan" is based on UserOut1 status as that is controlled from the aux temperature... its blank when its not running Everything else is...
by capri_turbo
Sun May 24, 2020 1:58 pm
Forum: Q&A
Topic: Serial API for V3.3.1 firmware
Replies: 9
Views: 928

Can anybody please advise me of where in the serial string the aux. data is transmitted. Is the support for the V3 finished now? I'm reading the V3 just fine... got Advance, RPM, Load (KPa) and user out 1 displaying useful data... I just need the aux output for the coolant temperature next, but cann...
by capri_turbo
Sat May 23, 2020 8:48 am
Forum: Q&A
Topic: Serial API for V3.3.1 firmware
Replies: 9
Views: 928

Can anybody please advise on this for me.
by capri_turbo
Fri May 22, 2020 3:46 pm
Forum: Q&A
Topic: Serial API for V3.3.1 firmware
Replies: 9
Views: 928

I think, all I need to know is which byte and which bits contain the aux. scaled info on the serial output on the latest V3 as I have managed to get Advance to display correctly, not tested RPM yet, but that should be fine, Load is now working (different from the V4 sketch that I am modifying), but ...
by capri_turbo
Fri May 22, 2020 11:19 am
Forum: Q&A
Topic: Serial API for V3.3.1 firmware
Replies: 9
Views: 928

Can the V4 API be used as I notice the file was originally 3.3.x?
by capri_turbo
Thu May 14, 2020 2:28 pm
Forum: Q&A
Topic: Serial API for V3.3.1 firmware
Replies: 9
Views: 928

Serial API for V3.3.1 firmware

Brent Is there a Serial API available for the V3. as the latest seems to be 3.1 and doesn't have the "aux" listed. The reason I ask is that I am looking at the code for an Arduino project to read the serial data. All I can find are sketches to do the V4 and I know the V3 is very different. Thanks Co...
by capri_turbo
Fri Jul 05, 2019 8:22 am
Forum: Q&A
Topic: Cooling fan control
Replies: 20
Views: 14407

I've wired an electrical cooling fan with my V3. And it works like a charm. But...... it is wired so that the fan is fed directly from the battery, then to the relay controlled by one of the user outputs in MJLJ, and then to the fan. The battery in return is connected/disconnected to the the whole ...
by capri_turbo
Tue Sep 11, 2018 6:39 pm
Forum: Operation
Topic: User outputs a gnd with power off
Replies: 9
Views: 5005

Here's what I have found. There is a slight error when using a relay off any of the user outputs if that relay has a permanent feed as it will power up the MJLJ unit. This is due to the way the 12V line from Pin9 of the ULN2003A is connected to the input of the Voltage regulator IC. See attached dia...
by capri_turbo
Tue Sep 11, 2018 5:29 pm
Forum: Future Upgrades
Topic: Aux input readout
Replies: 2
Views: 4059

Also, for using the tablet etc. could the table of values expand to fill the space rather than staying small in the top left corner? Would make using the touch screen a lot easier.
by capri_turbo
Sat Feb 17, 2018 5:11 pm
Forum: Operation
Topic: User outputs a gnd with power off
Replies: 9
Views: 5005

And the verdict is... Success.

This was all because my relay has a permanent live feed to allow manual override and operation with the ignition off after a long run...