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Newbie interrupt coding problem.
Solved it! According to the ATTiny43U datasheet, table 10-1, the vector I need is TIMER0_COMPA. According to the AVR-GCC documentation, and the example assembly code in the...
Tuesday, 3 September 2013 - 14:21
Arduino Uno - Valves and Pumps Control Question!!!!
Arduino shields use a pass-through connector system, so the order in which they are stacked does not really matter. What you have to look at are which pins are used by each shield...
Wednesday, 15 May 2013 - 14:17
RF Proximity Detector
Those Linx modules look very interesting. I'll have to check into them.
Wednesday, 27 March 2013 - 19:01
RF Proximity Detector
relative orientation is essentially random. I'm thinking of making some wearable electronics to let you know when your friend is near you in a crowd :)
Monday, 25 March 2013 - 17:17
Seeking advice on low-current power supply
With a 24v power source, and an output of 5V@10mA, your power dissipation any design of linear regulator will be 190mW. A 78L05 regulator in a TO-92 package would do the job. The...
Monday, 18 March 2013 - 16:25
Driver circuit for dual latching pulse relay?
That capacitor circuit can be made to work even with long timeframes between changes. To set the relay, apply a pulse to R2 to ensure the capacitor is discharged, then apply a...
Sunday, 10 March 2013 - 00:42
Driver circuit for dual latching pulse relay?
for bidirectional current in the one coil, you pretty much have to go with an H bridge of some sort.
Friday, 8 March 2013 - 17:15
Driver circuit for dual latching pulse relay?
How much current does the relay coil require? If it's only a couple of hundred milliamps, you could probably use an L293D driver.
Friday, 8 March 2013 - 17:08
Capture process time
it's a Linux Bash shell script.
Friday, 8 March 2013 - 17:05
8755 Programming
It's been a while since I've played with the SDK-85. I still have one somewhere, complete with manuals. I also have access to a programmer that can burn 8755 chips. The only...
Tuesday, 5 March 2013 - 19:23
RF basic question (sine)
Mathematically, a square wave can be constructed by adding sine waves that are odd multiples of the square wave frequency. This means that transmitting a square wave is the same...
Monday, 25 February 2013 - 19:13
Is there any reason not to flood vias on PCBs?
The only reason I can see for filled or not filled vias would have to do with why the via is there. If it's just carrying a signal between layers, then not filling is just fine....
Friday, 25 January 2013 - 21:40