Hi,
After finishing the first one (it works very well, thanks to this forum!) I've started building the circuit of the second one. It is similar to the one in this post http://forum.allaboutcircuits.com/showthread.php?t=9139&highlight=photovore
I've attached a picture of the circuit I'm trying to build (I'm sorry for the quality).
I've built the circuit on a breadboard (except for the trimpot, I've used another 47k resistor instead). When I connect the battery, nothing happens. When I test it with a multimeter, I have value 0 (ground) on pin 5 and 6 of the LM386 (the pins that normally should drive the motors). But when I disconnect the motors, the values on pin 5 and 6 are okay (3 to 6 V, depending on the light conditions)! I think I'm missing a clue here, but I find it very strange! Normally if a positive lead has 5 V and you connect it to a motor of which the negative lead goes straight to ground, it should turn, shouldn'it?
Any help would be kindly appreciated
After finishing the first one (it works very well, thanks to this forum!) I've started building the circuit of the second one. It is similar to the one in this post http://forum.allaboutcircuits.com/showthread.php?t=9139&highlight=photovore
I've attached a picture of the circuit I'm trying to build (I'm sorry for the quality).
I've built the circuit on a breadboard (except for the trimpot, I've used another 47k resistor instead). When I connect the battery, nothing happens. When I test it with a multimeter, I have value 0 (ground) on pin 5 and 6 of the LM386 (the pins that normally should drive the motors). But when I disconnect the motors, the values on pin 5 and 6 are okay (3 to 6 V, depending on the light conditions)! I think I'm missing a clue here, but I find it very strange! Normally if a positive lead has 5 V and you connect it to a motor of which the negative lead goes straight to ground, it should turn, shouldn'it?
Any help would be kindly appreciated
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