Tech Forum

I'm strongly considering using a PDM15 with my project car but I have a question regarding items which always need to be functional regardless of the 'ignition 'state' of the car. As I understand it, it is not recommended to permanently connect the PDM15 ignition input to +12v as this drains the battery over time. Is there a way then to program the PDM15 for a hazard light function without the ignition terminal being connected to 12v?

Thanks,

Trevor

Hi smart people,

I am working on an EV conversion, and I'm using speedhut CAN based guages. I have room for only one temperature guage (temp range 0-100 celcius), but would ideally like to have the option to see the temp on both the electric motor and its inverter.

Here's my current approach:

• The guage will only read one pre-defined CAN message, so I've defined two CAN outputs in the PDM config that will send the correct message to the guage when activated.

• I'm sending two different CAN messages from the motor / inverter (with different addresses (not the same as the message required by the guage) and I have successfully parsed the right data into the CAN output messages.

• I'm trying to use a PDM switch input (true, false) to specify which of the two CAN messages are sent to the guage.

Is there an application available to run on Apple IOS tablet to monitor outputs etc. or plans to create one?

Hi, I have asked this before, will there be a new firmware with improvements to the wakeup time for PDM15? It was not like this when I bought it, i think it was firmware 1..12 or something like that. Then a 2 second delay occured after it gets power, it´s very annoying Is there anything that can be done in the software to speed things up ?

Hi there brains trust, I'm converting a car to electric and I want to use the PDM 25 to implement a few safety measures. I'm hoping someone can guide me on how to configure my outputs on a PDM 25 for the following:

1. I want to ensure that the High Voltage system can't be activated unless the driver has their foot on the brake pedal.

2. I want to ensure that the driver cannot select forward or reverse unless they have their foot on the brake pedal.

I've tried using an AND function where HV out can't be triggered unless the HV switch has been on and the brake pedal is also pressed, but when the brake pedal stops being pressed, the HV system shuts down. I looked at counters and general functions, but could not work it out. Sadly the user manual gives no example that would help.

Has anyone found…

Hi folks,

I notice that in Downloads/Software there is a new PDM 15/25/35 manual issued June 25. The new version looks like a significant update to the older version (great), but it references a new software version for the configurator (1.1.7) with additional features, that I cannot find anywhere in the downloads section.

Is there new software with more features that I just can't find?

Hi all Trying to configure variable intermittent wipe on my PDM15 My windscreen washer switch is also a potentiometer for intermittent speed. I have this set as an input to my PDM but trying to figure out how to make it vary the intermittant speed is proving a challenge. Anybody done this before? If so any pointers on what I need to do to get the variable voltage from the potentiometer to change my intermittant speed? Cheers Matt

Just finished installing PDM25 system, updated to 1.1.6 via usb beforehand, connected power and ground keypad lite up initially. Connected laptop to PDM, loaded input/output configurations I had made previously. When looking at system information, battery voltage started at 1.68 Volts and slowly went up to 5.61 Volts and never went past that. Measured voltage at input stud and 12v ign switch pin both reading 13v. Ground pin reads no resistance, even added ground direct to battery. Outputs are receiving same voltage, and therefore not powering on. Any ideas?

Utilizing PDM15. Checked all grounds and connections are good, battery has been charged and tested good. We were seeing an inconsistent voltage drop while monitoring battery voltage in the software. This would cause the pdm to power off and interupt startup sequence, sometimes i could get the car to start by holding the key down to start. Some times we saw a dip down to less than 1 volt while monitoring battery voltage in the pdm software. We were also using oscilloscope to do additional monitoring at the post of the pdm. The scope didn't see as big of a drop as the software was reading though (about 6v). Battery and grounds are all 0gauge wiring, and the car has a relatively simple setup. I also verified that we aren't tripping any of the set fuses to cause a shitdown. Anyone have any recommendations as to where we can go…