Scoreduino-B Arduino based controller for digital scoreboards

Watch the video of Scoreduino-B

SCOREDUINO-B works with SCORE4 module of Scoreduino app.

The SCOREDUINO-B’ module works as a basic controller for 2.3″, 3″, 4″, and 5″- 4 digits (2 on each side) scoreboards. It has 4 switches for up and down commands for each set of 2 displays.

Other features:

How does it work?

SCOREDUINO-B is designed to work with 2 sets of 2 digits up-down counter. This controller module fits into the female headers of the 2 digits counters on each side. It works with the SCORE4 app. Users can send specific numbers to each set of displays. The communication medium is either Bluetooth or RF or manual control.

An example:

When a user sends 15 to one of the displays, the Scoreduino-B sends up count pulses 15 times to count from 1 to 15, and finally, it stops at 15. All the up-down counters and scoreboards have been designed in that way.

These are the pins on the Scoreduino-B board:

On the left side:

  • 9V: This is to power up RED colored 2.3″ displays. We get this voltage from the voltage regulator LM78XX.
  • 5V: 5V is used for CD4511 and 74LS192 on the left side
  • GND: GND of Scoreduino-B connects with the GND of 2 digits up/down counter
  • A: Send pulse from Scoreduino-B via this pin in order to count UP
  • B: Send pulse from Scoreduino-B via this pin in order to count down
  • 14: Reset pin. Send pulse to reset the count.

On the right side:

  • V: V depends upon the color of the displays used on the right side. For example, GREEN colored 2.3″ display needs 12V. This is the default supply voltage.
  • 5V: 5V is used for CD4511 and 74LS192 on the right side
  • GND: GND of Scoreduino-B connects with the GND of 2 digits up/down counter
  • C: Send pulse from Scoreduino-B via this pin in order to count UP
  • D: Send pulse from Scoreduino-B via this pin in order to count down
  • 14: Reset pin. Send pulse to reset the count.

Components used:

  1. 1 x PCB
  2. 6 x 6 pin male header angle
  3. 1 x 6 pin male header for programming
  4. 1 x 9 pin female header- to be changed in the next version to make it 4CH only.
  5. 5 x tactile switches
  6. 2 x heat sink set
  7. 1 x LM7805
  8. 1 x LM7809
  9. 2 x 22pF capacitor
  10. 1 x 16Mhz oscillator
  11. 3 x 10uF
  12. 2 x PC817
  13. 5 x 10K
  14. 5 x 1K
  15. 3 x 5mm LED (RED Green and BLUE)
  16. 1 x 1P DIP switch
  17. 1 x buzzer
  18. 1 x DC barrel
  19. 1 x resettable fuse
  20. 1 x Bluetooth module
  21. 1 x 16 pin DIL socket
  22. 1 x 28 pin DIL socket
  23. 1 x Atmega328P
  24. 1 x CD4049

See all the images on Flickr

The Schematic:

This is how we use Scoreduino-B:

  1. 2.3 inch scoreboard.      Watch it on youtube
  2. 3 inch scoreboard.         Watch it on youtube
  3. 4 inch scoreboard.         Watch it on youtube
  4. 5 inch scoreboard

It works with SCORE4 module of Scoreduino app.

See all the images on Flickr

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Basic trigger module for up down counters

The ‘basic trigger module’ works as a basic controller for up and down counters or seven-segment display drivers. It has 3 switches for up count, down count, and reset. Up switch increases the count and down switch decreases the count and the reset switch resets the count to zero.

How does it work ?

All seven segment display drivers are designed in such a way that this basic trigger module fits into the female headers of the drivers. The UP, DOWN and RESET pins of its trigger module connect to pins 5, 4, and 14 respectively of the 74LS192 chip that contributes to up, down, and reset of the count.

When you press the tactile switches, the corresponding LEDs placed right above the switches turn on. The two LEDs are flashing LEDs to give the trigger signal.

All the drivers are designed for COMMON ANODE seven segment displays. It can trigger these drivers:

  1. 1.2 inch RED common anode seven segment display driver– works with 5V-6V.
  2. 1.8 inch RED common anode seven segment display driver– Works with 5V-6V.
  3. 2.3 inch RED common anode seven segment display driver– works with 9V.
  4. 3 inch RED common anode seven segment display driver– Works with 12V.
  5. 4 inch RED common anode seven segment display driver– Works with 12V.
  6. 5 inch RED common anode seven segment display driver– Works with 15V.

 

Download Gerber Files

Components used:

  1.  1 x PCB
  2. 1 x LM7805 positive voltage regulator
  3. 1 x 16 pins IC socket
  4. 1 x CD4049
  5. 3 x Optocouplers
  6. 3 x tactile switches
  7. 2 x 5mm Flashing LEDs
  8. 1 x Normal 5mm LED
  9. 4 x 1K resistors
  10. 2 x 4.7K resistors
  11. 1 x DC barrel
  12. 2 x 6 pins angle header to connect to the drivers
  13. 2 x 10uF electrolytic capacitors
  14. 1 x0.1uF ceramic capacitor

The schematic:

See all the images on Flickr

Download Gerber Files

[beevideoplayersingle videourl=”https://youtu.be/KzSn5QQeT8c”]

Single digit up and down counter using 74LS192 and RF remote control

PCBs sponsored by

This is a basic up and down counter that can be controlled with a 4 channels RF remote control

This device uses 74LS192 up and down counter chip. It uses NE555(configured in monostable mode) to trigger the 74LS192 chip. 4511 chip works as a driver to the seven-segment display.

Schematic:

All the components required to build this counter are listed below:

  1. 1 x 74LS192
  2. 7 x 100 Ohm resistors
  3. 5 x 1K Ohm resistors
  4. 4 x 10K resistors
  5. 2 x tactile reset switch
  6. 2 x 0.1uF capacitors
  7. 2 x  100uF electrolytic capacitor
  8. 2 x BC557 transistors
  9. 1 x 0.56″ seven segment display common cathode
  10. 3 x 16 pins IC socket
  11. 2 x 8 pins IC socket
  12. 1 x 7 pins female headers
  13. 1 x 74LS192
  14. 1 x CD4511
  15. 1 x CD4049
  16. 2 x NE555
  17. 1 x MicroUSB connector for 5V

Download: Gerber Files

Assembly video

 

This is the RF remote control used with the up and down counter

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2. PCBgogo offers the biggest coupon for this year, max $155 off, Grab your best discount on this Christmas and New Year sale. PCBgogo will prepare the gift for the customers, Orders above $60
will receive a surprising gift along with your PCBs.
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Make a seven segment display using 5mm LEDs

All the PCBs sponsored by PCBGOGO.COM

In this post, I am going to explain how I built a basic 3″ seven segment display made using 5mm LEDs. This project was made during the research and development phase of Scoreduino project.

This is a COMMON CATHODE seven-segment display made with 29 pieces of 5mm LEDs. There is also a driver for this display. This can be a good experiment for students who want to learn how a seven-segment display and its driver work. The display driver is made using CD4026 which has been used several times in our previous up counter modules.
The driver is basically an up counter. After you insert the display into the headers of the driver and power it up, just press the COUNT switch to increase the count.

It works like any other seven-segment displays. I have designed a CD4026b based driver also. The seven-segment display fits into the headers of the driver and you can immediately test it. The driver is an up counter. Simply power up the display and test it.


Schematic of common cathode seven segments display:

Download Gerber Files


Schematic of the common cathode seven-segment display driver

Download Seven Segment Display Driver Gerber Files


The driver and seven-segment displays are theoretically similar to our CD4026 based up counter or common cathode driver.

 

Components required to build this seven-segment display

  1. 29 x LEDs.
  2. 2 x 5 pin header
  3. PCB
  4. 2 x 5 pins male headers

Components required to build the driver for the seven segments display:

  1. 1 x PCB
  2. 2 x 5 pins female headers
  3. 2 x 2 pins headers
  4. 2 x tactile switches
  5. 1 x 3mm LED
  6. 1 x Screw terminal
  7. 1 x 16 pin IC socket
  8. 1 x CD4026 up counter chip
  9. 3 x 10K resistors
  10. 1 x 1K resistors
  11. 1 x PC817 optocoupler
  12. 1 x 101J resistor network array
  13. 7 x BC547 NPN transistors
  14. 2 x 4 pins angle header (this is optional, you would need this if you want to concatenate other drivers)

You will need a 9V power supply to operate the driver.

All the PCBs sponsored by PCBGOGO.COM

PCBGOGO is offering several discounts and deals for Christmas and new year. Get all the details here: https://www.pcbgogo.com/happynewyear.html

**Deals: **

1. The greatest sale for the happy new year 2021. Everyday PCBGOGO will choose 1 order randomly during December, the chosen lucky order will be free of charge.
2. PCBgogo offers the biggest coupon for this year, max $155 off, Grab your best discount on this Christmas and New Year sale. PCBgogo will prepare the gift for the customers, Orders above $60
will receive a surprising gift along with your PCBs.
3. If you are new to PCBgogo, you can get a $50 coupon.
4. Follow PCBgogo on Twitter to get more Christmas giveaways, such as amazon gift card mPCBgogo cash, etc. https://www.pcbgogo.com/happynewyear.html

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