RobSmithDev | Wireless Quiz Buzzer System using Arduino, nRF24L01 and TP4056 lithium battery charger @RobSmithDev | Uploaded June 2022 | Updated October 2024, 1 hour ago.
Part 2: I show you how to make a wireless quiz buzzer system using nRF24L01 modules and Arduino's.
The buzzers are totally self-contained including a built in lithium battery with charger.
Part 1 was a wired version, which you can see here: youtube.com/watch?v=YkyAJxAy2G4
The main controller, also wireless, now has the option to disable buttons from people who have already guessed an answer and has a 3.5" socket to connect the audio output to an external amp.
I've also left the USB port exposed for future use in case I want to build an application that can use the button data in real time as well as control them
I put this to the test last night with a special Jubilee quiz! worked perfectly...
Support me to continue making videos:
Patreon: patreon.com/RobSmithDev
Discord: discord.gg/MKZ6HA6ZWE
Source Code & Schematics: robsmithdev.co.uk/youtube/wirelessbuzzer.zip
Tip: If you have any issues with the DFPlayerMini not working then try powering it from the 3.3v connection. Also if you have issues with the buttons connecting to the controller, power everything off, then power up the controller first for a few seconds.
Running Arduino's at low power: youtube.com/watch?v=Wrx2vkS-8mU
Thingiverse Designs for Button Boxes: thingiverse.com/thing:5396155
Tinkercad Designs for Button Boxes: tinkercad.com/things/k7JUDiFv1wr?sharecode=BaPiGkdqKju71d5xkFrCgnxJhQCo4WVAP1QIDcCe1sk
Products used in the video: (affiliate links)
nRF24L01+: amzn.to/3GxN7Hz (x10), amzn.to/3LLdtqn (x5)
nRF24L01+PA+LNA (Longer Range): amzn.to/3lKRe9i
nRF24L01+ 8-Pin Adapter: amzn.to/3z2A4Mi
TP4056 Based Charge/Boost Converter: amzn.to/3sYHXyx or amzn.to/3sWtLGt
18650 Battery Compartment: amzn.to/3GgvOdI
Arduino Pro Mini (16Mhz, 5V): amzn.to/3x8pnFF
FT232RL USB to TTL Converter (for programming the Arduino): amzn.to/3wLZRpf
Official Arduino Nano (Recommended): amzn.to/3FVaEBX
Arduino Nano (CH340 Version): amzn.to/3L3FLfv
DFPlayer Mini: amzn.to/38t9dOx
Red 10cm (4 inch) Arcade Button: amzn.to/39QotoZ
Yellow 10cm (4 inch) Arcade Button: amzn.to/38ueTI2
Green 10cm (4 inch) Arcade Button: amzn.to/3PgEMf6
Blue 10cm (4 inch) Arcade Button: amzn.to/3sx4jaa
Smaller Arcade Buttons (6cm) Alternative: amzn.to/3L8IT9Y
Power Buttons: amzn.to/3OykMq0
5V LED Lamps: arcadeworlduk.com/products/awuk-5v-10mm-wedge-base-led.html (not a sponsor)
M3 10mm Countersunk Screws: amzn.to/3MejVqM
M3 Metal Threadded Screw Inserts: amzn.to/3rgwhqB
Red PLA Plastic Filament: amzn.to/3yz7Bh2
Yellow PLA Plastic Filament: amzn.to/3swjccU
Green PLA Plastic Filament: amzn.to/37Ez45K
Blue PLA Plastic Filament: amzn.to/3yvmdxS
Spade Connectors: amzn.to/3w7GpUQ
Assorted 5mm LEDs: amzn.to/3LMT3gD
Plastic Chrome LED Panel Mount Holder: amzn.to/39Qnrtf
Assorted Resistors: amzn.to/3MRX6th
Wire Stripping Tool: amzn.to/321om6g
Arduino Libraries Used:
nRF24: github.com/nRF24/RF24
DFPlayer Mini Arduino Library: github.com/DFRobot/DFRobotDFPlayerMini
DFPlayer Mini Information: wiki.dfrobot.com/DFPlayer_Mini_SKU_DFR0299
Chapters:
Intro (00:00)
Background (00:12)
Button Schematics and Assembly (01:12)
Controller Schematics and Assembly (03:25)
nRF24L01 Traps (05:40)
The Code (07:39)
It Works! (11:15)
Summary (12:27)
Music:
Straight Fuse - French Fuse (Youtube Audio Library)
Press Fuse - French Fuse (Youtube Audio Library)
Rinse Repeat - DivKid (Youtube Audio Library)
Copyright © RobSmithDev 2021-2022
robsmithdev.co.uk
Where appropriate, all efforts were made to trace & obtain copyright
holders permissions to reproduce their material in this video.
If you have any questions regarding content please get in touch.
#ElectronicsCreators #arduino #nrf24l01
Part 2: I show you how to make a wireless quiz buzzer system using nRF24L01 modules and Arduino's.
The buzzers are totally self-contained including a built in lithium battery with charger.
Part 1 was a wired version, which you can see here: youtube.com/watch?v=YkyAJxAy2G4
The main controller, also wireless, now has the option to disable buttons from people who have already guessed an answer and has a 3.5" socket to connect the audio output to an external amp.
I've also left the USB port exposed for future use in case I want to build an application that can use the button data in real time as well as control them
I put this to the test last night with a special Jubilee quiz! worked perfectly...
Support me to continue making videos:
Patreon: patreon.com/RobSmithDev
Discord: discord.gg/MKZ6HA6ZWE
Source Code & Schematics: robsmithdev.co.uk/youtube/wirelessbuzzer.zip
Tip: If you have any issues with the DFPlayerMini not working then try powering it from the 3.3v connection. Also if you have issues with the buttons connecting to the controller, power everything off, then power up the controller first for a few seconds.
Running Arduino's at low power: youtube.com/watch?v=Wrx2vkS-8mU
Thingiverse Designs for Button Boxes: thingiverse.com/thing:5396155
Tinkercad Designs for Button Boxes: tinkercad.com/things/k7JUDiFv1wr?sharecode=BaPiGkdqKju71d5xkFrCgnxJhQCo4WVAP1QIDcCe1sk
Products used in the video: (affiliate links)
nRF24L01+: amzn.to/3GxN7Hz (x10), amzn.to/3LLdtqn (x5)
nRF24L01+PA+LNA (Longer Range): amzn.to/3lKRe9i
nRF24L01+ 8-Pin Adapter: amzn.to/3z2A4Mi
TP4056 Based Charge/Boost Converter: amzn.to/3sYHXyx or amzn.to/3sWtLGt
18650 Battery Compartment: amzn.to/3GgvOdI
Arduino Pro Mini (16Mhz, 5V): amzn.to/3x8pnFF
FT232RL USB to TTL Converter (for programming the Arduino): amzn.to/3wLZRpf
Official Arduino Nano (Recommended): amzn.to/3FVaEBX
Arduino Nano (CH340 Version): amzn.to/3L3FLfv
DFPlayer Mini: amzn.to/38t9dOx
Red 10cm (4 inch) Arcade Button: amzn.to/39QotoZ
Yellow 10cm (4 inch) Arcade Button: amzn.to/38ueTI2
Green 10cm (4 inch) Arcade Button: amzn.to/3PgEMf6
Blue 10cm (4 inch) Arcade Button: amzn.to/3sx4jaa
Smaller Arcade Buttons (6cm) Alternative: amzn.to/3L8IT9Y
Power Buttons: amzn.to/3OykMq0
5V LED Lamps: arcadeworlduk.com/products/awuk-5v-10mm-wedge-base-led.html (not a sponsor)
M3 10mm Countersunk Screws: amzn.to/3MejVqM
M3 Metal Threadded Screw Inserts: amzn.to/3rgwhqB
Red PLA Plastic Filament: amzn.to/3yz7Bh2
Yellow PLA Plastic Filament: amzn.to/3swjccU
Green PLA Plastic Filament: amzn.to/37Ez45K
Blue PLA Plastic Filament: amzn.to/3yvmdxS
Spade Connectors: amzn.to/3w7GpUQ
Assorted 5mm LEDs: amzn.to/3LMT3gD
Plastic Chrome LED Panel Mount Holder: amzn.to/39Qnrtf
Assorted Resistors: amzn.to/3MRX6th
Wire Stripping Tool: amzn.to/321om6g
Arduino Libraries Used:
nRF24: github.com/nRF24/RF24
DFPlayer Mini Arduino Library: github.com/DFRobot/DFRobotDFPlayerMini
DFPlayer Mini Information: wiki.dfrobot.com/DFPlayer_Mini_SKU_DFR0299
Chapters:
Intro (00:00)
Background (00:12)
Button Schematics and Assembly (01:12)
Controller Schematics and Assembly (03:25)
nRF24L01 Traps (05:40)
The Code (07:39)
It Works! (11:15)
Summary (12:27)
Music:
Straight Fuse - French Fuse (Youtube Audio Library)
Press Fuse - French Fuse (Youtube Audio Library)
Rinse Repeat - DivKid (Youtube Audio Library)
Copyright © RobSmithDev 2021-2022
robsmithdev.co.uk
Where appropriate, all efforts were made to trace & obtain copyright
holders permissions to reproduce their material in this video.
If you have any questions regarding content please get in touch.
#ElectronicsCreators #arduino #nrf24l01
