Pictures!

[free electron]

Little handy bench tool i'm working on in testing:

Power Monitor

it's plugged between the power supply and the powered device, reads supply voltage, current consumption, power and shows it on a small OLED display. In addition you can set a current threshold (Ialarm), if your device draws more than that, it will beep. And blink (working on it). The current drawn by the circuit is often a very reliable indicator if there is something wrong.
Technically it is an INA219B high side current sensor + PIC24 + cheap 128x64 I2C OLED display from ebay. I designed the PCB to be more like a simple PIC24F16K101 dev board. There are pin headers for all comms (UART,SPI,I2C, software I2C for the display). The SPI header is also compatible with nokia 5110 display.
I'm still tweaking the software, adding more secondary features, like detection if the supply is plugged not in the right  jack, some blinking etc.
I really like these small OLED displays, the have such a great contrast even in strong light conditions (bench!).
The INA219 has a cool feature of averaging the taken measurements (up to 128 samples), which makes the readout quite stable.
I managed to calibrate the chip to be quite precise, here on the pic below: compared against Fluke87V:

 

[Perrow]

Power Monitor

How much money will have to leave my pocket before one of those lands in my mailbox? And, what's the voltage and current limits of the measurements/circuit?

[jubal81]

Power Monitor

How much money will have to leave my pocket before one of those lands in my mailbox? And, what's the voltage and current limits of the measurements/circuit?

+1

[Govmnt_Lacky]

Power Monitor

How much money will have to leave my pocket before one of those lands in my mailbox? And, what's the voltage and current limits of the measurements/circuit?

+1

+2

[storyboardist]

Nothing crazy from me. Here's an NPN Tonebender MkII with Russian Mπ38a transistors and an external bias roller knob.





Close up of the roller knob. Just a cupcake knob that I cut the top off and painted black.



Gut shot. PCB I etched from the Tone Pad layout.



I had one more Spiderman comic book covered 1590B. I didn't want to cover up too much of the modge podge work with knobs, so I went with the Simple Clipper distortion circuit I found in the Gallery. (http://www.aronnelson.com/gallery/main.php/v/DRAGONFLY-LAYOUTS_0/album87/album172/)





Guts



Here's my perf layout if anyone is interested: http://i756.photobucket.com/albums/xx206/storyboards27/SimpleClipper_zps0550ef36.png

And finally, here's a JFET boost (also from the Gallery) I built into a wooden enclosure I made from some scrap poplar.





At one point I stained it and it looked awful, so I hit it with a coat or 2 of primer then metallic green auto paint.





Guts

[deadastronaut]

^ awesome wooden box..

[gtudoran]

@deadastronaut: Thank you, i appreciate.

[duck_arse]

And finally, here's a JFET boost (also from the Gallery) I built into a wooden enclosure I made from some scrap poplar.



......

awwwww, I saw this and thought it was the finished product! wowwee, I thort. still, they all look v. nice. and your cupcakes have knobs, you say?

[Perrow]

The recessed knob and led makes it so much cooler, and it was cool already 

Stunning.

[Govmnt_Lacky]

GENIUS!

That roller knob is very creative! 

[Freppo]

I have just look through this thread from the beginning.. not joking. It took med two weeks lol
Very inspiring stuff! So many talented people. Makes you wanna try harder with your own builds.

Here are a few of mine that came out decent enough




Check out my building blog at http://www.parasitstudio.se for more pics, videos and soundclips

Cheers
/ Fredrik

[duck_arse]

I have just look through this thread from the beginning.. not joking. It took med two weeks lol
Very inspiring stuff! So many talented people. Makes you wanna try harder with your own builds.

Here are a few of mine that came out decent enough




Check out my building blog at http://www.parasitstudio.se for more pics, videos and soundclips

Cheers
/ Fredrik

1203 pages? I think that deserves a sausage. welcome to the forum.

[deadastronaut]

indeed... well deserved. and nice builds too

congratulations on reading 1200 pages.

[deafbutpicky]

And finally, here's a JFET boost (also from the Gallery) I built into a wooden enclosure I made from some scrap poplar.





At one point I stained it and it looked awful, so I hit it with a coat or 2 of primer then metallic green auto paint.

Oh no, you ruined it, quick, sand it off and make it look awesome again (just kidding , partly... ) 

[free electron]

How much money will have to leave my pocket before one of those lands in my mailbox? And, what's the voltage and current limits of the measurements/circuit?

Well, i have no plans on selling these. There is an open hardware logo on the pcb, which means once the software is finished i will release all the files including schem, pcb design, gerbers and the source code.

It is actually a pretty simple schematic, plain INA219 application, PIC holds all the configuration and calibration constants, reads the data and shows in on the OLED display.
There is one limit - the max power rail voltage the INA chip can measure is 26V. Apart from that the circuit is highly tweakable. The current range can be adjusted by using a proper current sensing resistor and the calibration constants within the chip.
The PIC loads them into the INA at startup.

I have chosen the most useful settings for what i, and perhaps most of us here do - pedal building:

• power rail voltage: max 16VDC (can be easily set to max available for 18V powered pedals)
• current: max 1A

Here is a pic of the pcb with all SMT parts populated (solder paste + hot air):

[storyboardist]

^ awesome wooden box..

Thanks man!

awwwww, I saw this and thought it was the finished product! wowwee, I thort. still, they all look v. nice. and your cupcakes have knobs, you say?

Haha! Thanks man

The recessed knob and led makes it so much cooler, and it was cool already 

Stunning.

GENIUS!

That roller knob is very creative! 

Thanks guys! I was playing my Jaguar a while back and was messing with the rhythm circuit controls and thought, "Man this would be cool on a pedal..." 

Oh no, you ruined it, quick, sand it off and make it look awesome again (just kidding , partly... ) 

Haha I tried sanding off the stain to give it another go, but I was afraid I would take away too much wood so I ended up painting it. The grain was awesome, but just further proof that staining poplar sucks.  If I make any more like that I will use better wood.

[bluebunny]

congratulations on reading 1200 pages.

+1, and welcome.  And well done for winning the sausage.  Rob doesn't give those away to just anyone!   

[bluebunny]

Wow! 

[edd101]

Tap Tempo Tremolo. Random mode is freakin cool.


More pictures: instagram.com/janisaltmanis

Hi there,

tell me please, how did you do that type of labeling?

Ed

[Freppo]

indeed... well deserved. and nice builds too

congratulations on reading 1200 pages.

Thanks! I'm a vegetarian though, so I'll just pretend that it's a tofu-weenie  
I have to admit that after reading about 500 pages it did get a bit tiresome, but still my favourite thread on the internet

That looks like Dymo labelings on artemijs pedal. It's what I used for my first 50 pedals or so.
/ Freppo