ALDLdroid help - ZR-1 Net Registry Forums

Subfixer · 12-29-2019

I got ALDLdroid running on a cheap Android tablet using the 1320 Bluetooth adaptor.

The problem I'm having is an intermittent "checksum mismatch".

Anyone know how to solve this? I'm using an LT5 adx file I received from another member here.

Car is a 92.

Thanks.

Ccmano · 12-29-2019

Turn off the Wifi so it’s not hunting for a wifi signal and let it run on Bluetooth only.
You may find you have to disconnect and reconnect a few times before it takes. I have the same issue with mine.
H

FormulaReed · 12-29-2019

I get that too, but i, running an adx file that 1320 sent me. The app that they have seems to be a little more stable but will also drop out.

Sent from my SM-T280 using ZR-1 Net Registry mobile app

-=Jeff=- · 12-29-2019

Yeah.. connect disconnect a couple times seems to clear it up.. problem is with the silence commands at the beginning.. trying to get the CCM to stop chattering

Subfixer · 12-29-2019

Thanks guys. I'll give those suggestions a shot.

XfireZ51 · 12-30-2019

Make sure u have disabled Checksum in the settings.

-=Jeff=- · 12-30-2019

Quote:

Originally Posted by XfireZ51

Make sure u have disabled Checksum in the settings.

Why?

The checksum confirms the data packet to be correct. Otherwise you might get the wrong values

XfireZ51 · 12-30-2019

Quote:

Originally Posted by -=Jeff=-

Why?

The checksum confirms the data packet to be correct. Otherwise you might get the wrong values

I have mine set up this way and have absolutely no issues w getting the correct values. Never got a checksum error message. I’ve done at least over 500 datalogs using ALDLdroid. I do disable WiFi from my ASUS tablet which seemed to interfere at times w logging. That also appears to help in getting connected. It also appears to help if you enable BT once u’ve started ALDLdroid.

-=Jeff=- · 12-30-2019

Interesting, maybe it is a bogus checksum error. I have been playing with an arduino to get messages off the bus. I see the chatter and was trying to get data with the chatter but that may not work. I am going to set up a test bench with a CCM and ECM. If there is a better way to silence the CCM or insert the request message with chatter it would be nice. I also found what part of the chatter is, but need to see if I can find the rest..

12-29-2019	#1
Subfixer Join Date: Sep 2018 Location: Groton, CT Posts: 379	ALDLdroid help I got ALDLdroid running on a cheap Android tablet using the 1320 Bluetooth adaptor. The problem I'm having is an intermittent "checksum mismatch". Anyone know how to solve this? I'm using an LT5 adx file I received from another member here. Car is a 92. Thanks. __________________ 1992 ZR1 #442, 2 tops, White, White, Haibeck 415, 3.90 gear, Coilovers 2018 Audi RS5, 2.9 V6 Twin Turbo, Auto, Black, Black 2021 Audi Q3, 2.0T, 8 spd Tiptronic, Navarro Blue metallic, Pearl Beige

12-29-2019	#2
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: ALDLdroid help Turn off the Wifi so it’s not hunting for a wifi signal and let it run on Bluetooth only. You may find you have to disconnect and reconnect a few times before it takes. I have the same issue with mine. H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold.

12-29-2019	#3
FormulaReed Join Date: Jan 2019 Location: Seattle Posts: 62	Re: ALDLdroid help I get that too, but i, running an adx file that 1320 sent me. The app that they have seems to be a little more stable but will also drop out. Sent from my SM-T280 using ZR-1 Net Registry mobile app

12-29-2019	#4
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,150	Re: ALDLdroid help Yeah.. connect disconnect a couple times seems to clear it up.. problem is with the silence commands at the beginning.. trying to get the CCM to stop chattering __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

12-29-2019	#5
Subfixer Join Date: Sep 2018 Location: Groton, CT Posts: 379	Re: ALDLdroid help Thanks guys. I'll give those suggestions a shot. __________________ 1992 ZR1 #442, 2 tops, White, White, Haibeck 415, 3.90 gear, Coilovers 2018 Audi RS5, 2.9 V6 Twin Turbo, Auto, Black, Black 2021 Audi Q3, 2.0T, 8 spd Tiptronic, Navarro Blue metallic, Pearl Beige

12-30-2019	#6
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,696	Re: ALDLdroid help Make sure u have disabled Checksum in the settings. __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

12-30-2019	#9
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,150	Re: ALDLdroid help Interesting, maybe it is a bogus checksum error. I have been playing with an arduino to get messages off the bus. I see the chatter and was trying to get data with the chatter but that may not work. I am going to set up a test bench with a CCM and ECM. If there is a better way to silence the CCM or insert the request message with chatter it would be nice. I also found what part of the chatter is, but need to see if I can find the rest.. __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978