Post Created date
Capacitive Sense on motorized fader
Cool, id like to go through and try your code out when i get done with some projects. 
Tuesday, 18 August 2015 - 10:00
Small SRam
Jameco has some various sram chips in dip package, parameters are all over the place though.
Sunday, 16 August 2015 - 23:06
Capacitive Sense on motorized fader
Is there noise on your slider when checking from the ground of your micro controller to your slider? 
Monday, 10 August 2015 - 22:48
Capacitive Sense on motorized fader
This guy has the concept working, even though his *capacitor is of different construction without physically touching it to change capacitance:
Monday, 10 August 2015 - 22:44
Capacitive Sense on motorized fader
Debugging this possible solution may be tricky.  Various forms of test methods could check whether a finger touch is having the desired effect. You could have the counted...
Wednesday, 5 August 2015 - 16:06
Capacitive Sense on motorized fader
An easier idea that could be worth testing: Have the 16bit counter running at CPU clock speed,  Have an MCU output pin toggle high and reset the timer/counter  to 0 at...
Wednesday, 5 August 2015 - 06:43
Capacitive Sense on motorized fader
The metal 'bar has capacitance with any other object around it. Your fingers have capacitance. A capacitor when used to be charge up to a trigger threshold voltage like in a...
Wednesday, 5 August 2015 - 02:45
Beginner LTspice questions?
As a side note' I was just running a buck converter simulation that was taking forever to finish. Turns out i never selected  a model for a PNP transistor i was using. Once a...
Thursday, 23 July 2015 - 07:26
5vdc in +/- 15vdc 'black box power modules -$4.15
I do have some cheap Ebay/Chinese adjustable switching boost converters that appear to work great, but there kinda bulky. I will have fun trying to filter power supplies with...
Thursday, 23 July 2015 - 02:07
Beginner LTspice questions?
Most automotive voltage regulators put out 13.8volts? to charge the 12v lead acid battery (really 12.6v as each cell is 2.1v). So with lead acid batteries i assume you need some...
Tuesday, 21 July 2015 - 06:43
Beginner LTspice questions?
Wouldn't 36v AC be around 50 volts filtered to DC once through a full wave rectifier?   36*1.414 = 50.904 Half wave rectification even less.   
Tuesday, 21 July 2015 - 00:18
Beginner LTspice questions?
Here is a buck converter using the IRF9640 stepping down a 10vdc power supply into a 10ohm load, 100uf filter cap and a 330uh inductor.   *Edit After brushing up on...
Sunday, 19 July 2015 - 03:57