New answers tagged arduino
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Question re: ATTiny85 pin connection
The reset PIN on an MCU is active low. You need to pull it low to put the MCU in a reset state. And to make sure that this pin is always high (noise environment), the author decided to use an ...
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IRFZ44N , PWM signal from Atmega328P always conducting
IRFZ44 is not a logic-level MOSFET, though it will 'typically' work with your ~0.5A motor. Use IRLZ44 or similar for a proper design.
You need to provide a path for the energy stored in the motor ...
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74LS161 miscounting
Not sure if you ever figured out your problem. I think the problem is your clock. I think you mentioned you used a 74LS04. A 74LS04 is a fast switching chip and usually will not give a stable clock....
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Flip Flop Switch for a Rocket
Alternative solution:
simulate this circuit – Schematic created using CircuitLab
Classic cross-coupled NAND gate based SR latch. Could be done with NOR gates if NAND isn't available. A lot of ...
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Raspberry Pi reset circuit
I was looking for something like this, but I didn't find any. So, I designed mine. I am adding the circuit here if anybody needs.
I used it with another circuit which will sequentially detect ...
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Servo Stuttering Under Load with MOSFET Switch
Always look at the datasheet. The IRLB8721 is a logic-level FET, which is good, but if you look at the datasheet it only has \$\mathrm{R_{DS_{ON}}}\$ specifications for a \$\mathrm{V_{GS}}\$ of 10V ...
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Accepted
Servo Stuttering Under Load with MOSFET Switch
The problem is switching the GND of the servo - this is not a good idea as the servo will try to source power via signal wire. The solution is to switch the 8.4V supply with a relay or p-Chan MOSFET.
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Using MOSFET as a load switch to control multiple servos
Further to Tim’s fine response,
With most engineering problems, the first thing is to ‘qualify and quantify’ ie: servo current. What is the maximum we could expect? A product with a decent datasheet ...
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Using MOSFET as a load switch to control multiple servos
Before getting to the engineering, there are further questions to ask first:
Have you established that the problem you imagine, is one?
How much current do the servos draw when not changing position, ...
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