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This is a batteryless shunting voltage regulator for a small solar panel. I made this one in order to use my testpanel for charging mobile devices. For more info and the schematic, check jiskar.nl
I don't this is one of the complete fader units, since those seem to come in groups of four or so. Still, you can get a sense of the aesthetics of this one.
Almost ready to test.
Input is 50V p-p AC from a wall wart. Output is ±1–24VDC (trimmer adjusted) regulated by a standard LM317/LM337 circuit.
Pins underneath meet the pair of rails on a standard breadboard.
Both regulator circuits were tested on the breadboard first, so I'm just looking for soldering and wiring errors. And I need to add the 2 x Cadj capacitors and one diode to feed the negative smoothing capacitor.
The Adafruit protoboard is only just big enough…
i spent most of saturday in the valley and what's a trip to the valley without a visit to Fry's in Burbank?? the theme of the store is alien/monster attack.
A pair of cufflinks made out of some spare ICs. They were suprisingly quick and easy to make.
Instructions:
Parts:
Buttons, Wire and ICs
1) Cut a short length of wire and thread it through the button.
2) Strip the ends of the wire a small amount and solder to the middle of the IC.
NOS Parts from an estate sale.
Previous owner had been in HAM radio for the better part of 60 years and accumulated quite a collection of parts from the late 1950's to early 1960's.
Most are New Old Stock, with some parts being used but working.
I took several photos of the Tamiya Twin-Motor Gearbox for a review I wrote a couple years ago, this is a photo that wasn't used.
Mixing electronics theory and knowledge of correct usage of electronic components, with their creative application
Taken on macro mode, under natural and green light, and then monkeyed with in software. A selection of Amperex 7534, 6DJ8 / ECC88 and 12AX7, Telefunken and Amperex EL86 / 6CW5, and General Electric 6CX8. Most are OEM branded by Hewlett-Packard.
In my 1.2 minute workout, I ran 0.06 miles at an average speed of 2.9 mph, while the ISS traveled 331 miles.
This image is the 2 outer layers of a 4 layer PCB I recently designed. This PCB is for my Logic Analyzer project - which if you're interested you can follow along at github.com/sgstair/logicanalyzer
The Rynearsons are now required by their trucking company to have an Electronic On Board Recorder, which tracks the driving and rest time of trucks. While parked at the Midway Truck stop in Columbia, Mo. on Nov. 1, 2011, the Rynearsons said this tracking system is being encouraged by the Federal Motor Carriers Association so it can make sure truckers are stopping for the required rest time. KOMU Photos/ Anna Burkart
(rolling stones - 1965). who knew "the stones" were so far ahead of their time when jagger and richards wrote this song. they had the foresight to see cloud computing 47 years ago! brilliant.
btw, this toshiba ultrabook with the intel atom processor is the lightest notebook ever made.
it's so light, that they actually had to velcro it to the table. otherwise it would've floated away.
Pretty damn crude, but at least I know that the servo can lift that motor, I still need to hook it all up so it is under control of one circuitry (right now motor and servo are separate) so I can make it mimic the actions of one of the servos in my software simulation.
I'm still figuring out this whole electricity thing, I gotta make sure my circuit can actually power all the servos and motors at the same time.
Drones are one of the coolest gadgets out there right now, and there are so many different reasons you'd want to operate one.
This is the breadboard with the TX converter complete. The coax is connected to the FT-817 acting as an IF rig, and the blue wire is connected to the balanced antenna port on the R-75. On the input side I'm running 100mW from the FT-817 into a ~20dB attenuator. This signal gets fed to a mixer that combines the signal with the 10MHz local oscillator, then outputs a signal at 136KHz. I will be adding a 500KHz low pass section and a power amplifier soon.