Wideband guage for Hydra ECU
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not nearly that easy. maybe not even possible. you need a signal from the wideband controller (which is internal to the hydra) to send to the gauge/meter.
you'd have to set up a PWM output to provide that signal based on AFR and then convert it to a straight voltage to match the input of your meter.
Matt
you'd have to set up a PWM output to provide that signal based on AFR and then convert it to a straight voltage to match the input of your meter.
Matt
#4
!!! NOT CONFIRMED !!!
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not nearly that easy. maybe not even possible. you need a signal from the wideband controller (which is internal to the hydra) to send to the gauge/meter.
you'd have to set up a PWM output to provide that signal based on AFR and then convert it to a straight voltage to match the input of your meter.
Matt
you'd have to set up a PWM output to provide that signal based on AFR and then convert it to a straight voltage to match the input of your meter.
Matt
"A user defined PWM signal can also be used as a data and power source for the MDAC GP-meter 1.0. The display data is 0.256 times the duty cycle percentage. For example, to show AFR, a programmable ECU user defined PWM output would be programmed to output a 57% duty cycle at AFR = 14.7. The MDAC GP-meter 1.0 would output '14.7' based on the above equation."
I'm such a dumb-*** that I can't think of how I would take an Autometer gauge that has a range of 0~5V and make that conversion.
#7
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I read this on mdac.com:
"A user defined PWM signal can also be used as a data and power source for the MDAC GP-meter 1.0. The display data is 0.256 times the duty cycle percentage. For example, to show AFR, a programmable ECU user defined PWM output would be programmed to output a 57% duty cycle at AFR = 14.7. The MDAC GP-meter 1.0 would output '14.7' based on the above equation."
I'm such a dumb-*** that I can't think of how I would take an Autometer gauge that has a range of 0~5V and make that conversion.
"A user defined PWM signal can also be used as a data and power source for the MDAC GP-meter 1.0. The display data is 0.256 times the duty cycle percentage. For example, to show AFR, a programmable ECU user defined PWM output would be programmed to output a 57% duty cycle at AFR = 14.7. The MDAC GP-meter 1.0 would output '14.7' based on the above equation."
I'm such a dumb-*** that I can't think of how I would take an Autometer gauge that has a range of 0~5V and make that conversion.
it works because the C (capacitor) is essentially a little battery with a fast discharge rate. as the duty cycle increases, there's more on-time to charge up the cap and give it a higher charge voltage.
http://controls.ame.nd.edu/microcont...in/node40.html shows you how to build it. simple. probably can power the +12 off Vbatt depending on how tolerant the opamp is.
Matt
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