An F1-style reaction timer recreates the start-light cue: five red lights illuminate one by one, then go out together. You can try that format in a phone game or browser game, or build a physical version with an Arduino. These are third-party games and projects, not official Formula 1 products.
How the F1 start-light sequence works
For a standing Formula 1 start, the FIA’s 2026 Sporting Regulations, Article B5.7.2, specify five red lights illuminating in sequence, with one second between each light. After the fifth light comes on, the permanent starter chooses when all five go out; lights-out is the start signal. The FIA does not set a fixed delay for that final interval.
A reaction timer borrows this visual cue and asks you to respond when the lights go out. It is a simplified game, not a simulation of the complete race-start procedure.
Choose a reaction timer format
| Option | Platform and purpose | Setup |
|---|---|---|
| F1 Reaction Timer | Installable phone game. Its Google Play listing describes tapping when the lights go out and seeing a reaction-time result. Timing and training claims on the listing are the developer’s claims, not independently validated findings. | Install the app; the listing does not establish an account requirement. |
| ReactionGP | Browser-based practice. The site describes rankings, tournaments, and false-start handling as features. | Play in a browser; registration is required to create tournaments. |
| Arduino F1 race-start timer | A physical maker project that measures a response and describes jump-start handling. | Build the electronics; it is not required to play a phone or browser game. |
Pick a phone app for an installable solo experience, a browser game if you want to try its described competition features, or the Arduino project if the electronics build is part of the appeal. App and website availability or features can change.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
#1 Best Overall
- Main Chip: NE555, Operating voltage: DC 12V, Size: 66*21*12mm, Weight: 9g
- The potentiometer to adjust the output frequency. which consist of high-precision potentiometer ( adjust the output frequency.), high frequency filter capacitor and with input power indicator, with the relay is energized light .
- Adjustable Delay timer switch can be used with other circuits to provide a time delay for other appliances. The delay time is adjustable (0 to 10 seconds), can control AC 220V/10A equipment (Maximum control equipment 2000W).
- It is long lasting and durable is perfect for SCM learning, electronic competition, product development, graduation design and vehicle equipment-delay to prevent car ignition, prevention of high sudden current to burn components and devices.
- Compatible with Arduino, Raspberry Pi, AVR, PIC, 8051
How to build an F1 reaction timer with Arduino
The published Hackster project uses these components:
- Arduino Uno
- 8-digit 7-segment LED display compatible with MAX72XX
- Two 12 mm pushbutton switches
- Half-size solderless breadboard
- Jumper wires
An Arduino Uno starter kit can be a practical starting point, but check that it includes the required display and two switches. The project’s parts list is not a current inventory or compatibility guarantee; confirm display and component compatibility for the specific build and parts you choose.
Rank #2
- 1. All-in-One Arduino Integrated Kit, Combining Education and Practicality: Based on Arduino development, it integrates learning and daily use. It is not only a professional educational learning kit but also a practical daily tool, meeting dual needs of learning and use, suitable for users aged 15 and above to operate.
- 2. Abundant Educational Resources, Easy for Beginners: Equipped with sufficient supporting courses and code resources, users can master the theory of electronic modules, improve practical operation skills, exercise logical thinking and enhance programming proficiency through hands-on practice, without the need to find additional learning materials.
- 3. Dual-Function in One, High Practicality: It can be used as an ordinary alarm clock for daily use, or you can build an automatic watering system according to the tutorials to realize regular watering of plants, solving the trouble of plants lacking water when you are busy or away from home, making it more worry-free with one item for two uses.
- 4. Complete Full Set of Accessories, Ready to Install and Use: Standard configuration includes a 5-meter black hose, 3 sprinkler drippers and a high-flow water pump, supporting watering up to 3 plants at the same time; equipped with a dedicated power adapter, no need to purchase additional accessories, ensuring long-term power supply.
- 5. Stable and Durable, Worry-Free for Long-Term Use: The whole kit operates stably, with reliable performance, durable material and long service life. Whether it is used for learning and practical operation or daily plant watering, it can play a stable role for a long time.
The project describes a random wait after the final light, response-time display, and jump-start handling. That random wait is an implementation choice for the project, not a delay range specified by the FIA. Follow the project instructions for wiring and code rather than assuming any particular kit is preconfigured.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What a reaction-time score does—and does not—tell you
A displayed score is the result recorded by that particular game or device. The cited app listing and browser service descriptions do not establish laboratory-grade timing precision, and the available sources do not show that repeated play improves real-world driving, sports, or everyday reaction ability. Treat scores as game feedback, not a clinical or competitive benchmark.
Free tools Windows power users keep installed
One-click scans. No signup required.
Quick Recap
Best Value
- Astable or Monostable Operation
- Timing from Microseconds to Hours
- Adjustable Duty Cycle
- TTL-Compatible Output Can Sink or Source Up to 200 mA
- Output circuit is capable of sinking or sourcing current up to 200 mA
Rank #4
- The NE555 are precision timing circuits capable of producing accurate time delays or oscillation
- Timing From Microseconds to Hours
- Astable or Monostable Operation, TTL-Compatible Output Can Sink or Source Up to 200 mA
- Adjustable Duty Cycle, On Products Compliant to MIL-PRF-38535,
- Example Applications: Fingerprint Biometrics, Iris Biometrics, RFID Reader and a slew of other use-cases
Rank #3
- NE555 DC 12V Delay Timer Switch Adjustable Module 0 to 10 Second
- Useful for applications in equipment-delay to prevent sudden high current which can burn components and devices.Max.loading:2200W
- The potentiometer to adjust the output frequency.
- With input power indicator, with the relay is energized light.
- Main Chip:NE555; Operating voltage: 12V DC.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
