Subject	I hacked mine with an Arduino uno for fun
Posted by	black300zx on August 25, 2020 at 4:21 PM
	This message has been viewed 138 times.
In Reply To	Good to know. thank you sirs. posted by ZXoltan on August 24, 2020 at 10:24 AM
Message	Tapped into the ECU cts signal and fed it into the analog input of the UNO, and then drove the dash gauge with one of the PEM outputs. I characterized the needle angle vs PWM% and compensated for the nonlinearity fairly well. Worked ok. https://youtu.be/gP6TQhjvWBw
Follow Ups	My Z ran little warm today... suggestions? - KA8 19:01:48 08/19/20 How clean are the fins for the radiator and for the AC - MixManMash 19:29:39 08/19/20 Re: How clean are the fins for the radiator and for the AC - KA8 19:34:19 08/19/20 Fins are not all bent up? Usually, compressed air can - MixManMash 06:17:04 08/20/20 Add more water too while you're at it. Antifreeze is a poor - Barry (NJ) 16:46:28 08/24/20 A few things - Stanky (BC) 19:51:33 08/19/20 Got it! Thanks y'all - KA8 20:21:20 08/19/20 I'm not so sure on the cooler thermostat. Greg at SZ - MixManMash 06:02:55 08/20/20 Did you pressure check the system? - ZXoltan 06:54:03 08/21/20 Re: Did you pressure check the system? - KA8 09:54:49 08/21/20 Again, did you pressure check the system... - ZXoltan 13:42:23 08/21/20 Recently saw mention of a GKTech Fan blade, anyone know more - nissubaru 21:46:52 08/19/20 Interesting... Could be a bonus for those with cracked OEMs. (n/m) - KevinsFairlady 10:55:53 08/20/20 Make sure your aux fan is functional. - Doug71zt(CAN) 18:49:52 08/20/20 Re: Make sure your aux fan is functional. - KA8 09:57:58 08/21/20 Isn't the OEM gauge & sensor highly non-linear, with - black300zx 08:13:24 08/21/20 Exactly this. (n/m) - Barry(TN) 09:26:48 08/21/20 True. I'd hook up Datascan and actually measure coolant - MixManMash 12:46:38 08/21/20 How accurate is the gauge sensor/sender? - ZXoltan 15:36:25 08/21/20 Data scan reads the ECU sensor not the dash gauge sensor. (n/m) - itsa300zx 16:31:30 08/21/20 Makes sense. But how accurate is that sensor? (n/m) - ZXoltan 16:42:51 08/21/20 Considering the ECU makes decisions on that sensor, it's - MixManMash 17:33:07 08/21/20 Plenty. It reads in single digits. (n/m) - Bernie (NoVA) 23:24:30 08/23/20 Good to know. thank you sirs. - ZXoltan 10:24:46 08/24/20 Because the dash gauge is non linear. It displays an ok zone (n/m) - Bernie (NoVA) 13:45:22 08/24/20 I hacked mine with an Arduino uno for fun - black300zx 16:21:36 08/25/20
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