/347 error on copying my arduino code

It is caused because ” in WordPress is unicode not Arduino code.   You will need to replace every ” with new ones.  I will see who I can get this resolved. 

Christmas came early.   https://inventr.io/ send me a box of new components to come up with interesting projects for them.  Two more UNOs.  I just did a DC motor with a NPN transistor.  I will do the same with a PNP transistor and show how the PWM works differently on them.   I am going to connect back up the LCD displays on pins 10,11, and 13.  

I need to expand my design to 3 levels.  I have two new power adapters coming for the UNOs.    I need room to move components around. 

I have so much stuff for the Arduino project.  I went out and purchased storage boxes, glue gun, soldering iron and label maker.  

I have SIPO and PISO shift registers that I have been using on projects.   All the wires that came with the kits.  I am going through all the components shipped to me and putting them in drawers when I identify them.   I will probably get a second clear drawer cabinet soon.  






I found this kit on Facebook advertised for $29.  The Advanced Hero’s Kit.   You can buy more components from them to expand you building.

Inventr.io main page

Drivers and software

I now have an Arduino Mega 2560 and 4 Arduino Hero UNO devices connected on an I2C bus.   I also picked up 9V-1A power supplies, toggle switches, and other bread boards to start building some amazing projects. 

It comes with leds, buttons, wires, and other stuff.   This board programs in C#.   

Look at the 4 packages of resistors?  What are they?

I added in this cool chart on how to determine what a resistor is.

1.) You can look at the color bars on it
2.) You can pull out a multimeter and check it

Pull-Up Resistor: Wikileak

When and Why do LEDs Need Current Limiting Resistors? Waveformlighting.com



So here is the first resistor.

Brown – black – black – orange – brown.

Brown: 1
Black: 0
Black: 0
Orange: x 1000
Brown: +- 1%

100,000 ohms or 100kΩ

The tolerance is +- 1%.  The multimeter reads 99.6kΩ



Brown – black – black – red – brown.

Brown: 1
Black: 0
Black: 0
Red: x 100
Brown: +- 1%

10,000 ohms or 10kΩ

The tolerance is +- 1%.  The multimeter reads 10.01kΩ




Brown – black – black – brown – brown.

Brown: 1
Black: 0
Black: 0
Brown: x 10
Brown: +- 1%

1,000 ohms or 1kΩ

The tolerance is +- 1%.  The multimeter reads 1.003kΩ



Red – red – black – gold

Red: 2
Red: 2
Black: 0
Gold: +- 5%

220 ohms or 220Ω

The tolerance is +- 5%.  The multimeter reads 214kΩ

LED


LEDs

The LED is 1.5V / 25mA, according to the site.  You have a flat side that on the side of the shorter pin.  This is the negative.  The longer pin is the positive. 

The device is 3.3V and 5V 

 5V:
5V – 1.5V = 3.5V has to be dissipated
V = I x R or Voltage = current x resistance
3.5V = 0.025A x R
R = 3.5V / 0.025A
R = 140Ω

The smallest resistor you can use is 140Ω.  Our kit has 220Ω for the LED.

3.3V:
3.3V – 1.5V = 1.8V has to be dissipated
V = I x R or Voltage = current x resistance
1.8V = 0.025A x R
R = 1.8V / 0.025A
R = 72Ω

The smallest resistor you can use is 140Ω.  Our kit has 220Ω for the LED.  Amazon has the kits.