1320MINI Posted June 19, 2019 Report Share Posted June 19, 2019 Guys, Whats the easiest way to get a speed sensor reading to a MINI LINK plugin. The speed sensor is the Borg Waner unit. I have read people were using a external piece to convert the Hz rate. Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 20, 2019 Report Share Posted June 20, 2019 I drew this circuit for someone the other day. I havent tested it myself with a turbospeed sensor so no guarantees but I have used a similar circuit to divide a wheel speed frequency down. Over here you can buy the 4024 binary counter for about $1.50 from Jaycar so I assume they should be easy to find anywhere. 1320MINI and Booston 2 Quote Link to comment Share on other sites More sharing options...
FedericoCam Posted December 14, 2020 Report Share Posted December 14, 2020 Hi, I'm trying to create an input of max 500Hz to a Link G4 to set a "max speed limit" (to run on a safe boost level for now) of the turbo shaft of 92,044 RPM on a 14 blades Borgwarner. If I use your circuit my output frequency will be around 1350 Hz wich is not readable by the ECU. I'll need a divider by 50 from the original turbo frequency to the final frequency entering the ECU: 92,044x14/(60x50)=around 430Hz. How can i wire the two frequency dividers toghether? And why did you put resistor on the supply I'll thank you in advance, any help will be much appreciated. Salute from Italy, Federico. Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 14, 2020 Report Share Posted December 14, 2020 The BW turbo speed sensors already have a divide by 8 built-in to the electronics inside the connector. So with just the 1/16 frequency divider circuit above you would have a frequency of 168Hz at 92044RPM. For better range you can use instead the Q3 output on the 4024 chip (usually pin 9) which is divide by 8 instead of 16 so will give you 336Hz at 92KRPM. Quote Link to comment Share on other sites More sharing options...
FedericoCam Posted December 14, 2020 Report Share Posted December 14, 2020 10 hours ago, FedericoCam said: Hi, I'm trying to create an input of max 500Hz to a Link G4 to set a "max speed limit" (to run on a safe boost level for now) of the turbo shaft of 92,044 RPM on a 14 blades Borgwarner. If I use your circuit my output frequency will be around 1350 Hz wich is not readable by the ECU. I'll need a divider by 50 from the original turbo frequency to the final frequency entering the ECU: 92,044x14/(60x50)=around 430Hz. How can i wire the two frequency dividers toghether? And why did you put resistor on the supply I'll thank you in advance, any help will be much appreciated. Salute from Italy, Federico. Hi, found the solution. I've discovered the egr sensor has a built-in conversion ratio of 8, so if i use your circuit I'll obtain a conversion ratio of 16x8, it'll suit flawlessly my application. Quote Link to comment Share on other sites More sharing options...
lorenzo camplani Posted March 3, 2021 Report Share Posted March 3, 2021 On 20/6/2019 at 05:37, Adamw said: Ho disegnato questo circuito per qualcuno l'altro giorno. Non l'ho testato da solo con un sensore di velocità della ruota, quindi non ci sono garanzie, ma ho usato un circuito simile per dividere una frequenza di velocità della ruota verso il basso. Qui puoi acquistare il contatore binario 4024 per circa $ 1,50 da Jaycar, quindi presumo che dovrebbero essere facili da trovare ovunque. hi everyone I wanted to try this solution. someone can list me where I have to connect the various wires, I would not want to do damage. Thanks in advance Quote Link to comment Share on other sites More sharing options...
AZMI951 Posted April 23, 2021 Report Share Posted April 23, 2021 Hello Adam, On 12/14/2020 at 1:39 PM, Adamw said: The BW turbo speed sensors already have a divide by 8 built-in to the electronics inside the connector. So with just the 1/16 frequency divider circuit above you would have a frequency of 168Hz at 92044RPM. For better range you can use instead the Q2 output on the 4024 chip (usually pin 9) which is divide by 8 instead of 16 so will give you 336Hz at 92KRPM. My first post as I'm planning my harness and sensors. I have a Jaquet sensor for my TSS PN: DSE 0606.02 T3HV which is the same as most of the Garrett sensors with the M6x.5 thread. I have ordered a TI CD4024BPWR counter (less than $1) and a board from Bellin Dynamic Systems to mount the counter and wires to. I was wondering if there may ever be a need to change the output pins (Q2, Q4, etc.) but I'm not sure which pins may be needed as I don't know their dividing count. My plan was to se a 4 or 6 way connector so that I can bring the wires out of the 2042 ad repin the signal pin on the mating connector that runs the signal to the ECU. This will allow me to pot in the 4042 as an in line device. Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 23, 2021 Report Share Posted April 23, 2021 I just noticed there is a typo in my text above that you quoted. It should have said Q3 is divide by 8. Each Q divided the previous output in half, so something like this: Q1 = 1/2 Q2 = 1/4 Q3 = 1/8 Q4 = 1/16 Assuming your ECU is a G4+ then the Q3 would do. Quote Link to comment Share on other sites More sharing options...
AZMI951 Posted April 24, 2021 Report Share Posted April 24, 2021 Thank you! Quote Link to comment Share on other sites More sharing options...
Link2ThePast Posted October 13, 2021 Report Share Posted October 13, 2021 On 6/19/2019 at 8:37 PM, Adamw said: I drew this circuit for someone the other day. I havent tested it myself with a turbospeed sensor so no guarantees but I have used a similar circuit to divide a wheel speed frequency down. Over here you can buy the 4024 binary counter for about $1.50 from Jaycar so I assume they should be easy to find anywhere. Could I also just use this circuit instead of the one listed here? Does that little controller need a PCB or can I wire directly to the pins without issue Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 14, 2021 Report Share Posted October 14, 2021 Only for a hall effect sensor. If your sensors are VR you will need the VEMs device as the 4024 IC cant take a VR signal directly, it needs to be converted to a square wave first. Quote Link to comment Share on other sites More sharing options...
Link2ThePast Posted October 18, 2021 Report Share Posted October 18, 2021 On 10/14/2021 at 1:32 AM, Adamw said: Only for a hall effect sensor. If your sensors are VR you will need the VEMs device as the 4024 IC cant take a VR signal directly, it needs to be converted to a square wave first. Hey Adam, So I found a board that converts from VR to Hall but does not include the counter circuit so it's a 1:1 conversion. It has two inputs (a +/- for both) and two outputs. https://sirhclabs.com/product/vr-to-hall-sensor-converter-dual-channel/ I also found these counter chips from digikey that appear to have a dual input/output as well: https://media.digikey.com/pdf/Data Sheets/NXP PDFs/HEF40240B.pdf Is my estimation of the circuit correct for a dual input/output application? I do not know where the resistor would fit into this. https://drive.google.com/drive/folders/1Z95RXJ0FQbT0jo7N5H1m26pMGTbPWAqb?usp=sharing Pictures of the chip pin description and my understanding of the chip logic are in that folder. Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 19, 2021 Report Share Posted October 19, 2021 Why dont you just buy the vems one I suggested earlier which is proven and has an adaptive VR conditioner and divider all integrated on the same board which is the size of your thumb nail for $17. Quote Link to comment Share on other sites More sharing options...
Link2ThePast Posted October 19, 2021 Report Share Posted October 19, 2021 Cost and time. The dual input/output board and a few chips would cost a little over half the cost of four of the Vems device that is out of stock. Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 19, 2021 Report Share Posted October 19, 2021 Ok, if you are going to be designing something yourself it will be a case of trial and error. You will need a scope to be able to see the waveform at each step of the process. There is no info on what mode they have set up the max9926 in and it doesnt look like there is anyway to reconfigure it without swapping board components, so that may or maynot be suitable for ABS sensors. Im not sure about the 40240B, I have never used one, but it looks more designed as an inverting buffer rather than counter. 4520 might be a better dual channel divider. Quote Link to comment Share on other sites More sharing options...
Link2ThePast Posted October 20, 2021 Report Share Posted October 20, 2021 I will take a look at the mode configuration when that board arrives. It does say it's specifically for VR abs sensors and produces a 1:1 output but in square wave instead of AC. On 6/19/2019 at 8:37 PM, Adamw said: Could you explain why the 5v is attached with a node to the input of the 4024 chip and speed sensor input in the diagram above? I had an EE friend try and help me set up my circuit with the 4520 and adapt the one shown above but we are both confused by that. Wouldn't the chip see a constant voltage at the input like that? Is it to control the max amplitude of the square wave? Edit: Also, I think I have the circuit figured out for the 4520 chip (assuming the board with the max9926 outputs a square wave similar to what can be accepted by a 4024 chip). Can you take a look at it? It's the "CD4520BE circuit for ECU" picture Quote Link to comment Share on other sites More sharing options...
Link2ThePast Posted October 20, 2021 Report Share Posted October 20, 2021 Forgot to attach the folder link: https://drive.google.com/drive/folders/1Z95RXJ0FQbT0jo7N5H1m26pMGTbPWAqb?usp=sharing Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 20, 2021 Report Share Posted October 20, 2021 2 hours ago, Link2ThePast said: Could you explain why the 5v is attached with a node to the input of the 4024 chip and speed sensor input in the diagram above? I had an EE friend try and help me set up my circuit with the 4520 and adapt the one shown above but we are both confused by that. That circuit is for a turbo speed sensor which has a sinking output, you need the pull-up to give you two states. The VR conditioner says it outputs a 0-5V square wave so that would suggest it already has it a pull-up built-in. Your google drive link is restricted. Quote Link to comment Share on other sites More sharing options...
Link2ThePast Posted October 20, 2021 Report Share Posted October 20, 2021 8 minutes ago, Adamw said: Your google drive link is restricted. Sorry about that. Should be fixed Quote Link to comment Share on other sites More sharing options...
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