Tech Forum

has anyone tried to send an encoder signal to a pdm? I am not for sure if the PDM can even read the square wave signals produced by an encoder. i know i could send an encoder signal to a arduino and then through a dac to create a 0-5v signal or to a arduino and a can transceiver to create a can signal and then take either or input and control a dc motor to move to set location. but was curious if anyone had any insight on whether or not you could send the raw encoder square wave signal to the pdm directly and decode the position.

We have successfully configured the CAN link to receive data from the FT700 (CAN Input), but we now need to configure the PDM to transmit its data (CAN Output) to the FT700 to create a centralized log on the ECU.

Which PDM CAN Output setting (e.g., predefined stream, generic stream, or DBC export) should be used, and what is the specific CAN ID and message structure we must configure in the PDM to be compatible with the FuelTech FT700's input format?

Our goal is to stream critical PDM data (such as Output_X_Status and Output_X_Current) so that the FT700 can capture them in its own datalog.

We need to operate high-current devices (e.g., $40\text{A}$ starter motor solenoid, high-flow fuel pumps) that exceed the $10\text{A}$ and $20\text{A}$ continuous limits of the PDM's individual outputs.

What is the recommended method and corresponding PDM logic to activate a large external relay (e.g., $40\text{A}$ or $70\text{A}$ capacity)?

We intend to use a low-current PDM output (e.g., $10\text{A}$ output) only to supply power to the coil of the external relay, allowing the relay to handle the full load current directly from the main battery.

We are attempting to activate an output (Output X) persistently when the main battery is connected, without relying on the Ignition/Key-on Input (ignition on).

We confirmed that forcing the output ON works successfully while the PDM is connected via USB (using the Test Outputs feature).

However, when running on battery power alone (USB disconnected), the output fails to remain active. We cannot find a direct "Always ON" or TRUE setting that bypasses all other logic, including a potential dependence on the Pós-Chave line. What is the correct logical function to use to ensure an output remains ON whenever the PDM is powered, regardless of the Ignition Input status?

We are configuring an input for Active Low (Ground Switching from a FuelTech ECU). We cannot find a visible option to enable the Pull-up Resistor in the Inputs tab or the General settings. Does the PDM 25 V3 automatically enable the Pull-up resistor when Active Level: Active Low is selected? If not, where is this hardware setting located?

We are unable to establish functional Wi-Fi communication in Station Mode.

We have confirmed the correct SSID and Password for our shop's network. We have tested both DHCP (setting PDM IP to 0.0.0.0) and Static IP (e.g., 192.168.X.X), but the connection remains unusable or fails. Crucially, the PDM Configurator does not provide fields for Subnet Mask or Gateway. What are the assumed default values for the Gateway/Subnet Mask in Station Mode, and what is the correct procedure for forcing DHCP?

Hi All,

I have a PDM28 running all functions of a 1972 Corvette. It works beautifully, but I have run across something I want to do that seems very basic, but I don't see an obvious answer.

My rear parking lights are too bright and I want to run them at 50% duty cycle. I don't think I need to map this to another variable, I just want them at 50% when they are on. What is the output configuration I need to set?

I'm wondering if I will be able to use this OEM wiper switch. It would use 2 inputs to the PDM - one would be variable resistance to + or - depending on how the switch gets wired, and the other would just be for high speed activation. On low or delay the resistance would vary depending on the switch position. I do not yet know the resistance values, I'll have to get a switch to test.

Any thoughts or ideas would be appreciated.

I don't see any firmware downloads on your website. Can you give me access to them? Additionally, the instructions that came in the box appear to be for the V1. The directions I found on your website Version 1 - 23/6/25 also appear to be for the V1. Are there new instructions for the V2? I ask because the windows on the V2 don't looks the same as in the instructions.