Arduino tachometer ignition coil diagram. Also, if someone has an idea of a .
Arduino tachometer ignition coil diagram My plan is to make a TFT or LCD dashboard with the following functions: Tachometer Speed/Odometer (also re-settable trip meter) Engine temperature (sensor is present) Time/Date Fuel mixture gauge lean/rich Battery voltage Fuel Hello,i want to interfere to an ignition coil system to be able to cut ignition for a short time. I was going to use a hall effect with a magnet on the timing wheel (a wheel that spins 1RPM per 1 engine RPM) but as soon as I turned the engine on the hall effect went nuts. Arduino Tachometer - Project Setup Purpose & Overview Of This Project The purpose of this project is to build a single input, single output system. Note PVL Ignitions two types of spark plugs are used: For analog ignitions: PVL spark plug “standard” Digital Ignition: PVL spark plug “digital” 5kOhm; Connecting an electronic tachometer is the manufacturer of the tachometer usually referenced using a 5 kOhm spark plug connector, as this may cause a malfunction. I already have a mechanic relay which I control with Arduino. As you say an oscilliscope reading would really help you guys out but I don't have one nor do I know anyone with an oscilliscope to get such a reading. Digital Tachometer Using Arduino Microcontroller. I have an isolation module that converts the 120vdc + ignition coil primary pulse into an opto isolated low level 5 v pulses I noticed on this web site there was a forum for basic diagrams. If the switch-off is slow enough not to exceed the 2N6384's max. Diy Arduino Tachometer For Your Rc Airplane Ifcuriousthenlearn. Hello, I'm making a project of motorcycle tachometer. This is done using a high impedance voltage div The input element represented by the coil symbol needs to be replaced by your magnetic pickup and your circuit needs to share a common ground with the arduino. Do i miss something? regards` `const int hallPin = 2; // Pin voor Hall-sensor const int coilPin = 9; // Pin voor bobine void setup() { pinMode(hallPin, INPUT_PULLUP); // Hall-sensor met interne pull DieselHead: Hello, I would like to drive three wire CoP (Coil Over plug) Ign coils using a +5V trigger signal. Can I adapt it to this 2 stroke coil ? Thanks Not sure. 10 Led Tachometer Circuit Homemade Projects. That is, I want to build a TCI with an Arduino. Each coil uses 12v and 6amps. On one cylinder, two fires happen per engine revolution (wasted spark ignition). Initially, I thought I could simply parallel the LED on pins 4 barnabefi: Sorry to bother your post. corte RPM2. com *** Status - working code - could probably be enhanced *** Simple rev counter uses an ESP32 with arduino core and an IR proximity sensor. Arduino Rpm Tachometer Ir Sensor Meter Printed. Skip to content. I'm trying to make a gauge cluster for my older motorcycle. To trigger the spark, the TCI switches (disconnects) ground on the appropriate They're largely analog frequency to voltage converters. Project Guidance. Make Your Own Laser Tachometer For 10. Check I want to read RPM of a running motorcycle using Arduino. I will look one up. Hi Guys, I need some advice from you guys. Arduino Tachometer - Demonstration. DIY Tachometer to Measure Accurate RPM using ESP32 Make Tachometer Using Arduino With Free Codes And Circuit Diagram. I am really interested in your project, I would like to adapt it for my paramotor. As far as I have found, most Hello, I´m an mechanical engineer, with some basic knowledge in programming, who has found the fun world of arduino circuits. The tachometer may be connected to the ignition coil, distributor, or other ignition system components. Understanding the wiring diagram of the Sun Tachometer is important for proper installation and troubleshooting. After some research, for most modern bike, we can read the pulse signal from pickup coil instead of ignition coil. I´m currently working on a Porsche 944 from 88 and in my project of turning it into a light weight race car I´m developing my own digital gauges. Hello Guys, I want to make a Tachometer to count the RPM of my car with an Arduino Board and OLED Display, My car is 26 years old and it has no ECU or OBD Have the ignition coil go through a ferrite core, you wind 5 to 10 turns on the core and feed that back to gnd and the transistor base resistor. Your circuit to interface the Arduino/Tinsey to the ignition coil looks simple and efficient so I built the circuit and it works with a signal generator very well ++ output of generator wired to TACH_SIGNAL -- I want to build a RPM counter for my car using an Arduino. Lm2917n Lm3914 Tachometer Pcb. These include the power supply, ignition coil, tachometer signal A tachometer is a device that is used to measure the speed of rotation of any device. Here is my code below, i wonder is it wrong or Pin 9 doesnt come high or low. I have done a bit of looking around and the likes but cannot find any hard answers. Thursday, January 2, 2025. Wiring Diagram: The wiring diagram for an aftermarket tachometer will vary depending on the specific model and make of the tachometer A tachometer is a device that counts the revolutions of a rotating object, with the most well-known example being the automotive tachometer that monitors the revolutions per minute (RPMs) of an internal combustion engine. On the diagram it's listed as TF2: TC-052614. Microcontroller Based Tachometer Full Project With Source Code. Make sure to consult the manufacturer’s instructions when determining which wires to connect to the ignition coil or distributor. 7: 1101: Hi Folks I need your help ! I have an 3 cylinder outboard engine where the CDI ignition system has decided to give up. Tachometer Wiring. In addition to setting the Arduino Tachometer taps into the low-voltage side of the ignition coil for signal. The speed of the motor can be also controlled using the same circuit. Arduino Tachometer (RPM meter) with IR sensor module . I'm doing mainly the same, I'm using a darlington network to adapt 12V signal from car to 5V signal in Arduino. The end result will be a 16×2 LCD displaying the RPM of some computer fans. Diy tachometer using arduinoHow to install a tachometer in your car Tach autometer tachometer aftermarket rpm meter ignition cylinder jalopyjournal should. If you have one coil per cylinder you just need to pick the negative pole on one of the coil. That is how electronic timing lights I am planning to make a tachometer for my classic car with no ECU from where I could get a signal. Can I use transistor to turn on coil? Each coil will turn on many times per second. Signal Check: Start the engine and observe the tachometer needle. I'm thinking any 12V relay coil will do. Hello, I'm interested in creating a datalogging tachometer for a carburated V8 engine. For reference its a naturally aspirated chevy 454 thats in a This topic was automatically closed 180 days after the last reply. But tachometers are useful, and sometimes a requirement, in many other applications. I was planning to use an optocoupler in a I created this automotive timing light to check and adjust the ignition timing. If you measure off of the plug wire you'll be measuring on the voltage peaks but if your going off the coil power you'll be measuring on the voltage drops. Sensors. I am trying to determine the time between two explosions (one ignition coil high voltage). Transistor will not get hot? which transistor I need to use to this purpose? thanks Introduction to Digital Tachometer using Arduino, Project Concept, Block Diagram, circuit diagram, working principle, and Arduino code. This engine uses a HEI (High Energy Ignition) distibutor) not "points". I am trying to measure the voltage of the ignition coil (stepped down to not destroy the Arduino). It should respond to engine RPM changes. 1) • Arduino Uno Rather than wind the coil around the ignition lead where any leakage of the spark will cause some circuit damage. I know there are a number of different ways to do this using resisters , diodes and zener diodes. I've taken a Arduino beginners course a while ago and have made some useful (and some not so useful) projects since I've finished the course. But this motorcycle HAS a tachometer. Aim To produce a programmable ignition setup for a 4 stroke 4 cylinder engine with a single coil distributed ignition system, which is advanced through a MAP (Manifold Air Pressure) sensor and rpm read (2D). My car (from the 1960's) does not have a tachometer (REV counter). I need help with a circuit diagram and components to be able to input the rpm signal to the Arduino without damaging it. This is controlled by the D9 pin through a FET. Sceadwain, a v8 engine produces four 12 volt square wave Hello guys, It's me again. I am going to use the pulses coming from the primary side of the ignition coil. Some Kind Of Rpm Counter Electronic Projects Design Ideas Electronics Lab Com Community. I want to have a tach input signal to the instrument, but I'm not sure how to design an input signal conditioner, to output a 0-5v square wave signal to the arduino. The Tachometer. I tried to use the pulseIn command in the following way: I use an Arduino to read the frequency of the negative terminal or tachometer terminal on your ignition coil. I presume D4 is placed there to prevent inductive kick from the ignition coil. An Arduino sketch to drive the tachometer of a Jeep using an ignition coil pickup from the engine. Are there wireless tachometer sensors available for remote monitoring? Yes, there are wireless tachometer sensors available that can Simple tachometer circuit how to make a contact less digital using ir light reflection technique embedded lab arduino with free codes and diagram develop an based optical automatic addison diy sensor frequency counter under repository circuits 22106 next gr from car ignition coil general electronics forum cd4033 ic blog 8051 microcontroller projectiot123 technology It is widely used by car enthusiasts and mechanics to monitor the performance of an engine. zip (2. Bicycle Cari pekerjaan yang berkaitan dengan Arduino tachometer ignition coil atau upah di pasaran bebas terbesar di dunia dengan pekerjaan 23 m +. Tachometer from Ignition Coil. I want to use arduino to control ignition system on my v8 engine. I'd like to see if I can use Hello, I am building an Arduino-based tachometer for my motorcycle (KTM LC4 640 SM 2005). I am using an arduino uno r3 to try to control a variable geometry turbo charger using a vacuum operated actuator from a VW (N75 boost valve). etc. I'm just not sure what is the best Diy Arduino Tachometer For Your Rc Airplane Ifcuriousthenlearn. Inputs to the board are throttle position sensor (TPS), I have an electronics problem I could do with some help with. Vceo rating, the resulting max. a transformer & rectifier to step down the voltage from 115vAC to 6vDC. The ignition controller use sink pulses while the other end of the coil is connected permantly to 12volts to charge and discharge it. I know that the ignition pulses So my tachometer project is working good up until I try to power the ATtiny85 with my motorcycle's 12V battery. There are no identifying markings on the physical component. 5L 4 cyl Nissan Altima and given the different variety of coils in the market I'm not sure if I need optocouplers to isolate the coil's +5V trigger with the Digital I/O or Analog I/O pins on the controller. Consult your tachometer’s instructions for specific calibration procedures. The sensor module consists of IR Transmitter & Receiver in a single pair that can work as a Digital Tachometer for speed So I am wanting to get a signal from my ignition coils for an arduino/raspberry pi tachometer project. The I am trying to built a ignition system which will have the following Spark plug Ignition coil (I don't know the spec of these. However, since the board will only map input voltages from 0-5v my analog input to the board, Hi guys, I'm new to arduino, your forum and electronics in general So I hope I have chosen the correct section to post. but this one is from Honda Activa) Some switching circuit I found . New replies are no longer allowed. It’s a common application to ensure your system is running within safe temperature limits. That's the easy way to design a circuit, but would not be as useful for a diagnostic tool, Simply we have interfaced the IR sensor module with Arduino nano and the SH1106 Oled display. The rpm signal need to be picked up from the negative side of the ignition coil. Using the analog voltage reading property of an arduino, this can be easily implemented using the appropriate parts. Smithsclassic. This can then be used to ignite things (like grills) or, if put in a vehicle's exhaust, a flamethrower. Opto Coupler will be LTV817, D1 is Zener diode 5. This project looks pretty neat, includes a custom case and Aftermarket tach?Autometer tach tachometer Tachometer coil points rpm rvi gauge nissan wiring smiths pick install sentra 46aa 54c4 connect whereVdo xtreme tachometer wiring diagram. When emission requirements and ECU were getting into serious operation, the distributor was omitted and a spark coil for each cylinder was adapted, but some manufactures for say a 6cyl 4stroke engine, used three spark coils. I am trying to make a digital tachometer, and is going on too long by myself, frustrated and need help please. Related topics Topic Replies Views Activity; Tachometer from Ignition Coil. The thing though is that the datasheet is showing maximum voltages much lower than what a coil The pulses from the pickup coil (wire loop) coming through the hardware interface to D2 of Arduino triggers an interrupt upon falling. I'm doing this on a 1982 Yamaha Virago 920 engine (v-twin). What I'm trying to do is to get the signal from the primary ignition Hello, I would like to read a GM engine's (chevy 350/5. I found some very usefull information in an earlier post about this subject, and bought the pickup sensor shown in the attachment on eBay. I came up with circuit as in attachment. Digital Tachometer Using Arduino For Measuring Motor Sd Rpm Electroduino. For reference its a naturally aspirated chevy 454 thats in a 1979 This article is about a contactless digital tachometer using arduino. Then the main loop toggles the onboard indicator (D13 LED) state every five clicks – just to Hi, I am new to arduino and I have a couple of questions regarding the possibilities of a motorcycle dashboard based on arduino. If you’re unsure about The interrupts which we used in the above Arduino example doesn’t work with ESP 32 and ESP8266( NodeMCU, Wemos D1. First lets learn for ESP32. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for This engine uses a HEI (High Energy Ignition) distibutor) not "points". The issue I'm having is that at low rpms (~1200 and below), the signal gets a bit noisy as shown by the two extra Components required for this Tachometer project using Arduino • Hall Effect Sensor (Fig. My opto circuit looks like this (to capture signal from tachometer wire of truck): I have arduino Power Up: Turn on the ignition switch and check if the tachometer powers on. What happens is this: I have a signal in pulses coming from the rotation of the engine that activates and deactivates the coil with a frequency varying between 10Hz and 100Hz. The cathode and anode of the diode in parallel with the 1 k resistor should be your connection points for your magnetic pickup. Tachometers have a variety of applications, including measuring the speed of dc motors in order to ensure they are running according to specifications. whitehouse@btinternet. You can build them with a 555 timer, use an lm2917 etc But output is dependent on vcc, have to tune them with proper cap and resistor values, it's a PITA when an Arduino does it with code lol Hi forums! I'm trying to read engine RPM by sensing a pulse. When the coil discharge through the sparkplug, the amplitude will drop to about +/- 40V, but V01. The point of the generator is that it generates the same frequency and squarewave signal that the ignition coil will. (they are the same as the electronic ignition output) I tried using a parallax basic stamp to count them but the counts were very innaccurate, in other words the ignition output pulses were very difficult to work with. I seem to recall building Schmitt triggers in the past using 555 chips. I currently am running a coil module (GM HEI) triggered by the points via a transistor Hi all, I want to play around with driving an engine's ignition system using an Arduino. terminal is a decaying sinus wave that initially peeks at +/- 200V as the coil charges. Try using a toroidal core to pass the ignition lead through and winding the pick up coil on the toroid, this is Normally the + terminal of the coil goes straight to +12V (sometimes through a ballast resistor) and then your ignition control (be it points, or electronic of some sort) switches the negative side of the coil "on and off" to ground, to I've been working on a tachometer project with a friend of mine for some time now. 0 17/1/2021 - RKW - bob. Do You think it will work? Regards Before you say phooey, I know because I have one. Apr 22, 2023 • 38616 views • Can I use an Arduino tachometer for monitoring fan speed on my PC? Yes, you can use an Arduino tachometer to monitor fan speed on your PC. The interrupt is linked to a count process which includes a very simple trick to introduce at least 100µs delay between two successive counts. A new part cost above 400 Euros. Stack Exchange Network. The pre-made tachometer reads 2X the actual RPM. To drive it yourself you would need to generate a 12V square wave of the appropriate frequency corresponding to the engine's firing frequency at your target RPM. Hi, I came across your project on Reddit unfortunately that thread is ar chived so not possible to post there so hopeing you see this to answer my question. My plan is this. The idea is to use the signal from the negative side of the ignition I already know that the ignition coil generates a signal 0-200Hz so I don't need the o-scope for this. The coils are from a 2. Measure Rpm Optical Tachometer Using Arduino. 0 MB) The signal you see is the one the car delivers from its own rpm signal. Fidget Spinner Laser Tachometer. The circuit diagram of This is a feasibility inquiry regarding a project I have in mind: The scope is that I have a motorcycle engine to which I want to add a programmable Ignition controller in place of the current mechanical system (which has failed me and cost me a holed piston and an engine rebuild). The sensors on this bike for the RPM & Speed or mechanical. In order to Next, the tachometer needs to be connected to the ignition coil or distributor. . From my On car engine the tachometer signal is simply from the coil driver, on the negative pole of the coil (a coil is driven by negative). This can be used on any spark-ignited two-stroke or four-stroke engine on a gasoline car, truck, motorcycle, ATV or lawnmower engine. 5 KB. I´ve read quite many tachometer/rpm-threads on the forum now but I´m still not sure how to Easy peasy reliable tachometer, that you can use to measure the rpm of tools, bicycle wheels, and robots using inexpensive parts. At the engines flywheel there are The Flameduino is set to drive an ignition coil or coil-pack (coil on plug) for achieving sparks at defined intervals and a set dwell. Hello all, i try to make a ignition for mu two stroke engine. I have an UNO that I'm using to simulate the PWM signal Timing Light and Tachometer With Arduino: I created this automotive timing light to check and adjust the ignition timing. The issue I'm having is that at low rpms (~1200 and below), the signal gets a bit noisy as shown by the two extra I am building an arduino based tachometer for my car. Thanks. So one of my latest projects is to make a digital tachometer. Arduino Forum Arduino tachometer. ) . Projects Discussion and Showcase. Each tachometer may have slightly different wiring requirements, so it’s essential to consult the manufacturer’s instructions or documentation for accurate information. 7L) RPMs with arduino analog port. Several setups in this genre use simple ECU's (no can-bus), and also carburated engines. The wiring diagram of the Sun Tachometer includes several key components. This can be used on any spark-ignited two-stroke or four-stroke engine on a gasoline car, truck, motorcycle, ATV or 4 cycle engines: The tachometer signal terminal is connected to the negative terminal on the ignition coil or to a transistorized tachometer driver circuit connected to the ignition system. The ignition coils and spark plugs are causing a lot of noise! Here is the hall effect sensor I was using. 6: 3397: May 5, 2021 Read Rpm from car Hello, I am new using arduino. Bike has TCI ignition. Science and Measurement. The problem is that my outputs (LED's) freak out and do random things when I power it from the battery if the bike is running. The signal I am getting originates from the ignition coil (the blue wire in pic below) and is a choppy square wave that alternates from So I am wanting to get a signal from my ignition coils for an arduino/raspberry pi tachometer project. The pulse i was taken from Tachometer i took 1 wire that sending pulse to Tachometer ( i've tested attaching led ) So the goals is to receive that pulse signal into arduino, i can't just connect it directly to arduino since the pulse is using working with different voltage , so I'm using optocoupler to sending the Vceo rating of only 60V which is grossly insufficient for a ignition coil driver, as the peak voltage ('back EMF') on the coil primary in an automotive Kettering ignition system when the points open (or driver transistor switches off) is typically several hundred volts. I don't understand how you connect to the ignition coil. Either way , I will need to convert a 12v signal to 5v so it can be read by the arduino. Perhaps it's easier to make some sort of induction sensor in your case (by using a piece of wire wrapped around the spark plug wire, or a "non Using one of the plug wires or the wire directly into the ignition coil could work some ignition coils have a plug for a tach even though the car didn't come with a tach. I can get an rpm signal off the crank shaft positioning sensor or the trigger wire to the ignition coil. 19: 6415: May 5, 2021 Inductive tachometer. It has two pickup coil Okay, I don't know how familiar most of you will be with hot ridding, but here's the breakdown. Diy Tachometer Lm3914 N Just hook it to an Arduino pin and use the 'tone(pin, frequency);' function to send it a test signal. The input will come in the form of a signal The ignition signal coming off the coil neg. I am using a 817c optocoupler, attached to a resistor that goes to my vehicles "rpm" wire that I got from going on Toyota forums and reading the service manual. I am When using a tachometer wiring diagram, it’s important to carefully follow the instructions provided and ensure that you have the correct diagram for your specific tachometer model. I'm somewhat of a noob when it comes to more advanced electrical systems, so excuse my ignorance. A two step is a temporary rev limiter on a car engaged when you are going to launch the car typically. RPM is a very important datum when working with [] Analog rev counters are usually frequency meters driven by the 12V square wave off the coil -ve. I have connected the sink pulse signal from controller to NC of the relay and I trigger the relay I'm trying to identify the coil that generates the spark to source a replacement. spark voltage Arduino Tachometer taps into the low-voltage side of the ignition coil for signal. Calibration: Some tachometers require calibration to ensure accurate readings. Ia percuma untuk mendaftar dan bida pada pekerjaan. I've come to realize that this product is a current sensor that works off induction. And also that could This allows them to measure the spark firing rate, which is directly correlated to the engine’s RPM. Led Bargraph Optical Tachometer IGT is my shorthand for a wire that is coming directly of the engine computer, it's actually labled IGT4 in the diagram as it controls the spark for cylinder #4. I'm trying to put together a standalone instrument using arduino, for motorsport use. I've been doing some research on how to read RPM from the spark plug wires; and for Coil on plug cars, from the coil pack wires. system Closed July 7, 2024, 10:47am In this article we will explore how to use an IR transmitter and receiver break-beam pair similar to the PIC Tachometer project I built a few months ago, but because of popular demand, the Arduino system will be used for all the processing and break-beam interruption counting. It is designed to incorporate a potentiometer for variable spark frequency (delay period between firing events). ← previous page next page →. I want to make a digital tachometer for my motorcycle. Skip to main content. 6: 1754: March 19, 2023 Need advice on suitable transistor for tachometer. Now I know there are some nasty spikes being generated. I would like to take a tachometer interrupt signal from a Jerry Howell's TIM-6 kit for an Arduino Uno based engine management system and display. Latest: The Impact of PCB Materials on but this circuit will change my coil waveform due to D4 diode (I don't understand why it's placed before D5, maybe should it placed behind. Digital Tachometer Schematic Under Circuits 59595 Next Gr . If I connect everything to my motorcycle except use a 9V Components required for this Tachometer project using Arduino • Hall Effect Sensor (Fig. Then, the tachometer needs to be connected to the body of the car, usually with a screw or bolt. 5 ohm impedance. That's the easy way to design a circuit, but would not be as useful for a diagnostic tool, especially for a lawnmower which has no low-voltage coil. I'm trying to build a tachometer for my motorcycle, a 1982 Yamaha Virago 920 (V-twin, two ignition coils). 19: 6652: May 5, 2021 Tachometer Signal readout. There are several threads here that show how to do this by watching the signal from an ignition coil. 1) • Arduino Uno • Small magnet • Jumper wires • Rotating Object (Motor shaft) Circuit Setup • The setup for creating is as follows-• In the shaft whose rotation speed is to be measured is fitted with a small magnet using glue gun or electrical tape. This signal has a duty cycle close to 50%, so the coil charging time varies with engine speed. He has a tach signal and needs it cleaned up enough to use as a interrupt signal to get engine RPM. The RPM and all the other informations are displayed on a 16×2 LCD screen. 1V, D2 is 1n4007, R1 and C1 works as low pass filter with 338Hz cut-off frequency. What to do ? Arduino/ESP8266, a couple of parts, some time and BAM that should do the trick ! The Hardware I have and I thought that the software was quite easy. Can I adapt it to this 2 stroke coil ? 800×450 26. Which is exactly what I want. I'm not asking for someone to do it for me, just point me in the right direction. Is there a way to clean the Wiring diagram of an ignition coil with control line. At the moment, I am trying to figure out which signal to use. (I know how to count pulses and convert it to rpm using OK so what I am trying to accomplish involves an Arduino Uno reading pulses from an ignition coil and then produces a variable pulsed digital output (that corresponds to the engine speed ) for the purpose of driving a solenoid lube oil pump . I will use 8 ignition coil on arduino. I compared the electronic diagram of this clamp (see 2nd attachment) to the Hi, This is my first post here. Since my meters use PWM input and are 0-5v I'm using the digital output from the Arduino. If i put a 5 volt on it the coil sparks. But. Tachometer Detailed Circuit Diagram Available Make Project Now. So below you can get the wiring diagrams and source code which you can use to get the accurate RPM readings from the rotating objects. Another Arduino-Tachometer picks up an optical signal. A very simple way to make a tachometer where the result is displayed on an OLED display in the form of an RPM number and a progress bar. This circuit will have a wire (usually gray) for Hello, I am new to programming and need help with a code that controls the pulse of an ignition coil. Therefore if the circuitry works with my signal generator it will work on the ignition coil signal on the actual engine. Car Tachometer Circuit. - tobykurien/aircore. The This is from @setenta9 I've been helping with the code part, but I'm not good enough with circuits to help with the wiring part. Motors, Mechanics, Power and CNC. • Hall Effect sensor has a detector in In the case of the test stands (Sun and Allen) they used an ordinary 6v ignition coil, with 1. It leads to a loom in the engine compartment and its following wire leads to the Hi everyone, I'm actually building a dashboard for my 2 stroke 20 years old motorcycle. I found that these pulses, on my Harley Sportster, are greatly disfigured by the ignition coil. I'd like to use coil negative side (signal) to measure RPM. 2. I Am using an LM7805 5V regulator to get down to the proper voltage. 3. Hi I am a total newbie but I have managed to set up and control a Swithec X25 stepper motor using a potentiometer but I am more interested in trying to read the pulses from the ignition coil and hence be more accurate since making a pulse/voltage conversion with external components and feeding that voltage to Arduino is not be best solution. Can someone tell me what search string I should be looking for? "Ignition coil" just gets me heaps of car sites. That signal that I show you is obtained I tried to create a tachometer for my motorcycle using an Arduino Uno. It's using a Mini Pro 5v 16mhz, serial seven segment display and a 24 Neopixel ring. Also, if someone has an idea of a I don't understand how you connect to the ignition coil. gzqgnc smqq xcc whhg yabpq vzr qlpq smepcd dlbxixwm bvxdi