Search found 175 matches

by capri_turbo
Sat Feb 17, 2018 3:29 pm
Forum: Operation
Topic: User outputs a gnd with power off
Replies: 9
Views: 5013

I've been looking at the data sheet for the ULN2003. The internal freewheeling diodes will allow 12V through from the outputs to the 'safe 12V' line of the mjlj which I think is powering it up. My next trial will be to remove pin 9 from the circuit and add the freewheeling diode at the relay instead...
by capri_turbo
Sat Feb 17, 2018 9:35 am
Forum: Operation
Topic: User outputs a gnd with power off
Replies: 9
Views: 5013

I'm running an experiment on my desk with my spare V3 unit. Currently I have only 2 wires to it connected to Gnd and User Out 1. User Out 1 is connected to pin 85 of a standard automotive relay. Pin 86 is connected to 12V as per the diagram listed above. The coil has a resistance of circa 75 ohms. T...
by capri_turbo
Fri Feb 16, 2018 5:09 pm
Forum: Operation
Topic: User outputs a gnd with power off
Replies: 9
Views: 5013

It's wired exactly as the diagram in the installation pages with user out 1 connected to a relay coil with the other side of the relay coil to a permanent 12V https://wiki.autosportlabs.com/File:MJLJ_User_output_examples.png This puts 12V on user out 1 and powers up the unit even though there is no ...
by capri_turbo
Fri Feb 16, 2018 3:06 pm
Forum: Operation
Topic: User outputs a gnd with power off
Replies: 9
Views: 5013

Having an absolute nightmare with this. With the ignition off and no power to the mjlj at all, the feed through the relay to user out 1 is switching the mjlj on. With a diode in circuit it stops this, but user out 1 will then not switch on the relay. How do I stop this happening? If I switch the 12V...
by capri_turbo
Wed Feb 14, 2018 7:46 pm
Forum: Operation
Topic: User outputs a gnd with power off
Replies: 9
Views: 5013

I think I've sussed it... I've wired a relay as per the instruction in the installation guide so that user out 1 is controlling a relay that has 12V permanently to the other side if the coil. Unfortunately, this seems to feed UO1 with 12Volts and actually powers on the mjlj. Hopefully the addition o...
by capri_turbo
Mon Feb 12, 2018 8:21 pm
Forum: Operation
Topic: User outputs a gnd with power off
Replies: 9
Views: 5013

User outputs a gnd with power off

Trying to control a cooling fan with user out 1 set to trigger from aux (go to ground) at 88 degrees. I've wired as per the diagram in the instructions but have noticed that when no power is there to the mjlj the outputs go to ground which switches my fan on permanently. Is this correct? Currently l...
by capri_turbo
Mon Feb 12, 2018 4:40 pm
Forum: Future Upgrades
Topic: Aux input readout
Replies: 2
Views: 4066

Aux input readout

Could there be an option in the tuner software to display the aux readout as just the corrected figure in a digital gauge like the others rather than just the analogue 0-255? This would be useful for reading the temperature etc. 'at a glance' rather than looking at the centre of a cluttered gauge fo...
by capri_turbo
Fri May 27, 2016 2:12 pm
Forum: Q&A
Topic: Megajolt APP to Android
Replies: 1
Views: 3418

I did, but I had to buy a Windows tablet that runs a full version of Windows so I could use the standard configurator program. I got the Linx10 then constructed a Bluetooth module to plug into to my 9 pin com port (V3). hardware mods required to the board though for power and comms avoiding the RS23...
by capri_turbo
Tue Nov 25, 2014 6:31 pm
Forum: Future Upgrades
Topic: Megajolt Android tuning app
Replies: 104
Views: 131240

It's a Linx 10. Only just come out over here. Seems to have good reviews so far.
by capri_turbo
Mon Nov 24, 2014 6:34 pm
Forum: Future Upgrades
Topic: Megajolt Android tuning app
Replies: 104
Views: 131240

It was a long wait but well worth it. I think the Windows 8.1 platform on the 10" screen will give me more scope to mess around than with an app on a 5" Android phone screen... and for the bargain price of £180 including the Bluetooth adaptor, case, 9 pin plug and the tablet. The laptop is now redun...
by capri_turbo
Mon Nov 24, 2014 5:30 pm
Forum: Future Upgrades
Topic: Megajolt Android tuning app
Replies: 104
Views: 131240

Got this done sooner than expected... Hardware mods... +5V from Vref to pin 1 of the serial port. Pins 11 and 12 of the MAX232 to pins 7 and 8 of the serial port. This gets the TTL signals out very neatly, BUT it means that if you wish to connect via a cable, you MUST use a home made one that only c...
by capri_turbo
Sun Nov 23, 2014 5:13 pm
Forum: Future Upgrades
Topic: Configurator software: port to other OS?
Replies: 16
Views: 16224

I'm using a 'Linx10' windows tablet. As it seems to run a full version of windows 8.1 the existing PC software (only tried 3.3.2) works fine and uses the Bluetooth just fine too. These tablets are new to the market and are around £160. The 8" version is around £80.
by capri_turbo
Thu Nov 20, 2014 11:39 pm
Forum: Future Upgrades
Topic: Megajolt Android tuning app
Replies: 104
Views: 131240

After a lot of messing about I have successfully implemented bluetooth comms on my V3 and using a windows based tablet, (Linx10) which runs a full version of windows 8.1 the original windows configurator program runs and communicates over the bluetooth perfectly. I'm going to build a better bluetoot...
by capri_turbo
Fri Jul 04, 2014 11:26 am
Forum: Future Upgrades
Topic: Megajolt Android tuning app
Replies: 104
Views: 131240

I now have Bluetooth comms working fine between my PC and my V3 MegaJolt... it took a while to get it working as I had some confusion over com ports and the way Windows installs the blutooth stuff, but it works just great. As per my post in the QA section, will the PC configurator software run on Wi...
by capri_turbo
Fri Jul 04, 2014 11:23 am
Forum: Q&A
Topic: Configuration software 3.3.2
Replies: 1
Views: 2458

Can anybody please advise as to whether or not the normal PC configurator software will run on a Windows phone or tablet?