(1) Are there some problems in my schematic? Or in my soldering? How is it possible that the motor shield burned?
If I understand you correctly:a. the shield was plugged into your Arduino Uno.b. The Uno was connected to USB power.c. There was no other power supply connected to the shield.
d. you had no short near the 3v 5v Gnd or Vin pins on the shield
In which case I'm guessing that your wiring on the underneath of the shield shorted against the 6 pins on the Arduino just above where it says AREF.Where it says: "ICSP for USB interface" in the picture on this page:arduino-uno-pinoutOne of those pins is +5V
When I connected it to my digital camera shutter port, camera seemed to awake immediately, which indicated to me that something was wrong.
You need to check your opto pinouts too.The opto output is 4 and 5.
I believe I get the location, but I don't quite understand what that would mean. As I have only soldered on the motor shield and not the Arduino, the shorting must be on the motor shield part, no?
I am a beginner with electronics and this is my first non-trivial soldering job.I have a project where I wish to control the focus and shutter of my digital camera through dedicated shutter port. Camera wakes up when one cable (focus) is connected to the ground, and takes an image when the second cable (shutter) is connected to the ground.<snip>
What I meant was... is any of your wiring on the underneath of the motor shield touching those pins when it is plugged in ?If you push the motor shield down, the bottom of the board must be quite close to those pins that are sticking up ?Yours, TonyWilk
What I meant was... is any of your wiring on the underneath of the motor shield touching those pins when it is plugged in ?If you push the motor shield down, the bottom of the board must be quite close to those pins that are sticking up ?
Any chance you might have plugged it in and mis-aligned it by a pin or something ?
Find some old discarded PCB and practice soldering
The pref board looks rough.
also invest in some silicon insulated hook up wire.several colors.bright different colored wires make these easier to "read".