k fuku Posted May 10, 2022 Report Share Posted May 10, 2022 I would like to control a pump for methanol injection with ECUMaster's H-bridge. Do you have any examples of PWM control with the above H-bridge via CAN-BUS of G4X? https://www.ecumaster.com/products/dual-h-bridge/ Quote Link to comment Share on other sites More sharing options...
Vaughan Posted May 10, 2022 Report Share Posted May 10, 2022 Why would you need dual bridge functionality of a pump, couldn't it be done with a half bridge? The only reason to use a full bridge would be if you needed to be able to run the pump backwards and forwards. Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 10, 2022 Report Share Posted May 10, 2022 Have you got the ECUmaster CAN tool or a PCAN/Kvaser tool for programming it? Quote Link to comment Share on other sites More sharing options...
k fuku Posted May 10, 2022 Author Report Share Posted May 10, 2022 44 minutes ago, Vaughan said: Why would you need dual bridge functionality of a pump, couldn't it be done with a half bridge? The only reason to use a full bridge would be if you needed to be able to run the pump backwards and forwards. Currently, the pump output is driven by PWM control of link by using a Toyota stock fan controller. I was thinking of using PDM to simplify the wiring. I was thinking of simplifying the wiring with PDM, etc., but this H-bridge is inexpensive, so I'm hoping to use it. 34 minutes ago, Adamw said: Have you got the ECUmaster CAN tool or a PCAN/Kvaser tool for programming it? Yes I have it. I am utilizing ECUmaster's USB-CAN and ADU-5 connected to G4X. Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 11, 2022 Report Share Posted May 11, 2022 This should work. Set H-bridge device up like below. With this set up Connect 1A output to pump -, connect 1B output to pump +. 1B will output constant 12V, 1A will PWM the ground side of the motor according to commanded CAN Aux duty cycle in ECU. CAN Mode tab: CAN Stream: k fuku 1 Quote Link to comment Share on other sites More sharing options...
k fuku Posted May 11, 2022 Author Report Share Posted May 11, 2022 2 hours ago, Adamw said: This should work. Set H-bridge device up like below. With this set up Connect 1A output to pump -, connect 1B output to pump +. 1B will output constant 12V, 1A will PWM the ground side of the motor according to commanded CAN Aux duty cycle in ECU. CAN Mode tab: CAN Stream: Thank you very much for your detailed explanation. Thanks I will give it a try. Quote Link to comment Share on other sites More sharing options...
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