Value of the resistors used in proto-shield

Forum 2005-2010 (read only) Hardware Interfacing
1

Anyone know the value of the resistor R1 and R2 in Arduino proto-shield v.1a? Thanks

2

Please help if you know the value of the resistors. :slight_smile: The only similar protoshield I can find is located at http://www.tigoe.net/pcomp/code/archives/arduino/000729.shtml. However, it is using R7 (1K ohm) and R1 (10K ohm). Thanks

3

hi

a bunch of people have produced designs for or manufactured something called a "protoshield"... which design are you talking about? There's Todbot's, Tom Igoe's design, and the one that Sparkfun made from Tom's deisgn.. and I think there are a few more.

Another way to answer your question would be to see what pins the resistors are connected to. From that and the Arduino schematic, their value and function would be easy to determine.

D

4

Hi Danial,

Apologize for the insufficient info.

I'm referring to the following proto shield carried by pcb-europe.

It is located at: What Is Visual Programming and How Does It Work? | AppMaster

The label printed on the PCB is
Proto Shield v.1a
by Tom Igoa &
Gianluca Martino, 2006

I believed this is one of the two proto shield that is commerically available (another one is from SparkFun). However, I cannot find any information (schematic, BOM, etc) on the web that is specificed to this version. Another version produced by Tom Igoa is widely circulated but the component layout and part ID is different from this version.

This matter was bring up a few months back in this forum but some how it was not followed up. I believed some users are as confuse as I am. I therefore would like to suggest to the Arduino team to update the Arduino's website with this info.

Thanks.

5

Hi

if you have a multimeter, put it on the "continuity" range and test which pins the resitors connect to. i would guess they are for the LED's, but not sure. Check with the meter and it will be easy to say.

D

6

Hi Daniel,

Below is the pin connection:

R1
Power ---////-----switch S1-----GND

R2
ICSP(Pin3?) ---- ////----Arduino Pin 31

Thanks

7

Hi Daniel,

Below is the pin connection:

R1
[Power] ---////-----[switch S1]-----[GND]

R2
[ICSP(Pin3?)] ---- ////----[Arduino Pin 31]

Thanks

8

ok that means

R1 will be a pullup resistor for the switch, so use 10K for that.
R2 seems to be a 1K for an LED conencted to pin 13 of the Arduino... so it would be 1K or so.

Hope this helps

D

9

Hi Daniel,

Thanks for the help rendered. It really help me to get started. :slight_smile:

Regards.