Category Archives: nRF24L01+

Cheating At Bowling, The Hacker Way

Anyone who has ever gone to a bowling alley will know the preferred (but ineffective) technique to telepathically control a bowling ball. [Mark Rober] and [James Bruton] decided to change that and hacked a bowling ball that can be steered remotely (and discreetly), simply by leaning your body.

They started …read more

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Posted in accelerometer, arduino, bowling, IMU, nRF24L01+, Tech Hacks | Leave a comment

Game On with these Open Source Arduino Buzzers

Planning a game of Hacker Jeopardy at your next meetup? You’re going to want some proper buzzers to complete the experience, but why buy when you can build? [Flute Systems] has released an open source DIY game buzzer system based on the Arduino that will help instantly elevate your game. …read more

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Posted in Arduino Hacks, arduino pro mini, buzzer, Games, nRF24L01+, PowerBoost, quiz buzzer | Leave a comment

Samy Kamkar’s LED Balloon Network

Writing this in the frigid darkness of a Northern Hemisphere January evening, I have to admit to more than a little envy of Samy Kamkar and his friends. One of their summer events is a private party at a secluded campground somewhere that looks quite warm, which from here seems mighty attractive.

Samy wanted to provide a spectacle for his friends. What he came up with is glowing orbs; LED balloons that would float above the campsite and wow his friends with their pretty synchronised illumination. Thus an adventure in wireless communications, lighter-than-air flammable gasses versus electronics weight calculations, and …read more

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Posted in 2018 Hackaday Superconference, ATtiny24, balloon, Hackaday Columns, led, led hacks, nRF24L01+ | Leave a comment

Use Your Game Boy As A Wireless Controller

Like many retro favourites, the Game Boy is in no way dead — development continues apace through its many fans.But what about the hardware side? This is a particularly interesting one: [Alex] wondered if a Game Boy could be readily used as a wireless controller. Set out to make it happen, the final product is a game cartridge that makes the classic handheld a wireless controller.

It’s achieved quite elegantly, with a custom cartridge used to turn the Game Boy into a controller while requiring no modification to the handheld. The cartridge contains a flash chip to store the ROM, …read more

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Posted in game boy, nintendo, Nintendo Game Boy, Nintendo Game Boy Hacks, nintendo hacks, nRF24L01+, wireless | Leave a comment

Hacked RC Transmitters Control All The Things

If you have lots of RC creations about, each with their own receiver, you’ll know that the cost of a new one for each project can quickly mount up – despite RC receivers being pretty cheap these days. What if you could use a NRF24L01+ module costing less than $3?

That’s just what [Rudolph] has done for his Hackaday Prize entry, rudRemote. Though many people already spin their own RC link with the NRF24 modules, this sets itself apart by being a complete, well thought out solution, easily scalable to a large number of receivers.

The transmitter can be made …read more

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Posted in nRF24L01+, radio hacks, rc, rudremote, Teensy, The Hackaday Prize, transmitter | Leave a comment

Glorious Body of Tracked ‘Mad Mech’ Started as Cardboard

[Dickel] always liked tracked vehicles. Taking inspiration from the ‘Peacemaker’ tracked vehicle in Mad Max: Fury Road, he replicated it as the Mad Mech. The vehicle is remote-controlled and the tank treads are partly from a VEX robotics tank tread kit. Control is via a DIY wireless controller using an Arduino and NRF24L01 modules. The vehicle itself uses an Arduino UNO with an L298N motor driver. Power is from three Li-Po cells.

The real artistic work is in the body. [Dickel] used a papercraft tool called Pepakura (non-free software, but this Blender plugin is an alternative free approach) …read more

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Posted in how-to, L298N, Mad Max, motor driver, nRF24L01+, papercraft, peacemaker, pepakura, prototyping, rc, robot, robots hacks, tank treads, tracked, treads, vex | Leave a comment

Sub-$20 Arduino-Based Telemetry System

[William Osman] set out to prove that unlike expensive commercial data logging rigs, he could get the same results for under twenty bucks. He wanted to build a wireless three-axis accelerometer for a race car project, allowing engineers to make modifications to the suspension based on the data collected.

The hardware consists of an Arduino Pro Mini connected to a three-axis accelerometer, and an nRF24L01 wireless module. Power is supplied by the race car’s 12 V, changed to 5 V by a linear regulator with the Pro Mini in turn supplying 3.3 V. The base station consists of an Arduino …read more

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Posted in nRF24L01+, telemetry | Leave a comment

“Borrow” Payment Cards with NFC Proxy Hardware

Contactless payments are growing in popularity. Often the term will bring to mind the ability to pay by holding your phone over a reader, but the system can also use NFC tags embedded in credit cards, ID card, passports, and the like. NFC is a reasonably secure method of validating payments as it employs encryption and the functional distance between client and reader is in the tens of centimeters, and often much less. [Haoqi Shan] and the Unicorn team have reduced the security of the distance component by using a hardware proxy to relay NFC interactions over longer distances.

The …read more

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Posted in NFC, nRF24L01+, PN7462AU, proxy, Quickpass, Unicorn Team, wireless hacks | Leave a comment

Remotely Controlling a Not-So-Miniature Hot Air Balloon

Calling [Matt Barr]’s remote controlled hot air balloon a miniature is a bit misleading. Sure, it’s small compared with the balloons that ply cold morning skies with paying passengers and a bottle of champagne for the landing. Having been in on a few of those landings, we can attest to the size of the real thing. They’re impressively big when you’re up close to them.

While [Matt]’s balloon is certainly smaller, it’s not something you’d just whip together in an afternoon. Most of [Matt]’s build log concentrates mainly on the gondola and its goodies — the twin one-pound camp stove-style …read more

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Posted in hot air balloon, lighter-than-air, misc hacks, nRF24L01+, propane, propane accessories | Leave a comment

Zero-Intrusion Wireless Light Switch

What do you do if your light switch is too far from your desk, and you’re in a rental property so you can’t put in extra wiring to install an electronic control for it? Get up and turn it on or off by hand? Of course not!

If you are [Guyfromhe], you solve this problem with a servo attached to a screw-on light switch faceplate, and you control it with a pair of Arduino/nRF24L01 combos. It’s a pretty simple arrangement, the wireless link simply takes the place of a serial cable that instructs the Arduino on the light switch to …read more

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Posted in home automation, home hacks, light switch, nRF24L01+, servo | Leave a comment