Would this be an example of what is needed to power this ?
http://www.getfpv.com/12v-step-up-voltage-regulator.html
Sorry to ask but why can I not power it using a wall/D.C. Adapter 12VDC ?
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Roland TR-808 Bass Drum Breadboard Project
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Roland TR-808 Bass Drum Breadboard Project
Not exactly, it will only provide one half of what you need. There are a variety of ways to do this, two 12V Wall adapters will work (one to provide +12V and the other to provide -12V) it needs 2 power sockets (which may not be an issue). That may be the easiest and it should work. One of the adapters provides +12V and the other has its +12V lead attached to ground and its ground lead connects to the -12V lead on your breadboard (providing -12V relative to ground). Another option is a regulated 12V wall adapter and a boost regulator module that will take 12V input and produce a 24V regulated output. Ground for the boost module connects to +12V and the 24V output provide the -12V output. This unit from pololu will do it but is quite
expensive at $11US,
an similar unit from ebay is $1 US (but long delivery) such as this one:
In either case you would need to adjust the supply output to be 24 V (as both boost modules are variable voltage). A 5V wall adapter and one of the ebay modules I referenced earlier will work as well with no voltage adjustment required (as the module takes 2.5 to 5V in and outputs +-12V already), the 5V adapter (or 2 AA batteries at 3V) will power the module and it will produce the needed + and - 12V to power your circuit. The downside to it is shipping from China for the module can take up to a month or so via mail, so it isn't necessarily fast if you are in a hurry and as the module is only $2US overnight delivery would be probably expensive. You could also make a split power supply from a 24 volt center tapped transformer, rectifier, capacitors and 7812/7912 regulators (there are instructions on google for doing so), but you don't seem to be able to buy a cheap +/-12V wall wart from any supplier I can find. You used to be able to find them surplus sometimes, but even my favorite surplus suppliers don't have any.
Peter
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Roland TR-808 Bass Drum Breadboard Project
I see, perhaps then this one!!?
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Roland TR-808 Bass Drum Breadboard Project
Yes, good find! This is exactly what you want. Didn't show up on any of the google searchs I did. I'll have to remember this in case I need one sometime.
Peter
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Repetitive downloads don't work on Win10
There were reports of anti-virus stripping file when 9.3 came out, but that was for the install not working.
I also remember a W10 problem were some updates stopped FZ, but I think that was install as well.
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NodeMcu V3 parts library
Hi Peter,
I've fixed the schematic SVGs. I've also added connectorXterminal to the moisture sensor breadboard, but it's not working(https://raw.githubusercontent.com/OgreTransporter/fritzing-parts-extra/master/DFRobot_Capacitive_Soil_Moisture_Sensor/DFRobot_Capacitive_Soil_Moisture_Sensor_breadboard.svg).
Transporter
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Roland TR-808 Bass Drum Breadboard Project
Hi J303
If you fancy building your own split supply you can take a look at this (I've designed this layout and built it. I use it for my modular synth):
:12V Rack Power_1.02.fzz (55.9 KB)
It is based on the MFOS project here:
http://musicfromouterspace.com/analogsynth_new/WALLWARTSUPPLY/WALLWARTSUPPLY.php
There's also some nice schematics on Hexinverters site of all the 909 drums and a few 808 voices too.
http://www.hexinverter.net/neinohnein-kick/
You might also find these parts useful:
RE: spilt power: You can make a battery powered split supply. Here's a guide on how to do it:
Good luck,
Kevin.
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Roland TR-808 Bass Drum Breadboard Project
Is there no way to make this work from 9V batteries? How does Eric Archer make the Andromeda Space Rocker? It seems this whole circuit should be able to run off of two 9V batteries.
http://www.ericarcher.net/wp-content/uploads/2014/07/mk4-v2-kit-instructions-0.pdf
Same with this other clone, that is modeled on Eric Archer's schematic
It runs on +/- power supply, you can run 2 9v batteries in series, or run it off a bipolar (+/-15v or +/-12v power supply). Or... experiment!
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Roland TR-808 Bass Drum Breadboard Project
As long as it will run on +/-9V (which the second article seems to indicate it will) then 2 9V batteries connected as in noodleDriver's Split Supply Concept drawing should work just fine. Won't hurt anything to try it, low voltage won''t damage anything in the circuit, at most it won't work if the transistor bias is off far enough (but that's somewhat unlikely).
Peter
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NodeMcu V3 parts library
As well as the svg you need to add the terminal definition to the fzp file as well, the three connector lines in breadboard need to change from this:
<breadboardView>
<p svgId="connector9pin" layer="breadboard"/>to
<breadboardView>
<p svgId="connector9pin" layer="breadboard" terminalId="connector9terminal"/>As well as defining the terminalid in the svg. With only the svgid definition the terminal defaults to the middle of the shape defined as the pin which isn't what we want in this case. Here is a copy of the part with the fpz modified to add the terminal id, and the svg modified to move the terminal definition to the edge of the pin:
DFRobot Capacitive Soil Moisture Sensor V1.0_fixed.fzpz (21.9 KB)
Peter
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Mini-360 DC-DC Buck converter part request
Hi,
I am newbie in Fritzing. Can anyone help or suggest me to make part of Mini-360 DC-DC Buck converter (like in the links below)
https://solarbotics.com/product/40410/
Thank you in advance.
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Mini-360 DC-DC Buck converter part request
I don't have this exact one, but I have ones that are similar. If you can provide the dimensions I can likely adapt another part. The board outer dimensions are listed in one of the posts, but whats missing is the position of the terminals for input and output. If you take a piece of .1 perf board and provide the number of holes between pads (hopefully aligned on .1 inch centers) or alternately the length between identical edges of the holes) I'll have a bash at it.
edit: Never mind, electrodragon has dimensions including the hole spacing.:
Peter
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Mini-360 DC-DC Buck converter part request
Hi Peter,
Thank you so much for your reply. Actually, I bought the module from AliExpress https://www.aliexpress.com/item/10PCS-LOT-Mini360-DC-DC-Buck-Converter-Step-Down-Module-4-75V-23V-to-1V-17V/32582509989.html.
In this page, it provided the dimensions of the module which is identical to what you posted from ElectroDragon.
Please see image herehttps://ae01.alicdn.com/kf/HTB1xJy3LXXXXXcRXpXXq6xXFXXX1/226751614/HTB1xJy3LXXXXXcRXpXXq6xXFXXX1.jpg.
I believe that the Fritzing part of this module will be useful because of its low-cost and high efficiency.
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Mini-360 DC-DC Buck converter
Mini-360 DC-DC Buck converter available for ebay and other such sources. A tiny ((17mm by 11mm) buck converted module that will do around 2Amps with an adjustable output. All three views present, but pcb not yet verified (I haven't yet got my set of these 
).
Mini-360 DC-DC Buck converter.fzpz (15.0 KB)
Peter
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Mini-360 DC-DC Buck converter part request
They are available from all over . Turns out I saw them last night while ordering more of the +-12v modules that I made the part for yesterday and ordered some. Won't be here for a month or so but I'll have a part when they arrive this time .This is a relatively minor (if you are familiar with parts creation) modification of the +-12 module. I put it in parts submit (where eventually it may make it in to the core parts bin) in this url and you can down load it from there. If it doesn't match the real device, please post and I'll fix it .
Peter
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Mini-360 DC-DC Buck converter part request
Thank you very much again, Peter. I'll test it and report the result soon.
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What is the license of work greated with Fritzing?
Can I use the PCB made by Fritzing to grant my own licence, such as robot controller board, and produce it for selling?
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Mini-360 DC-DC Buck converter
Thank you for contributing great work.
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Roland TR-808 Bass Drum Breadboard Project
2 Batteries will work just fine and will not hurt anything in your circuit but as they loose charge the voltage will drop and maybe make it sound a bit different ie drop in volume or some minor thing. At some point the voltage of your batteries will droip below (3 or 4 volts) the minimum voltage for some component. I think op amps like TL072 work right down to 3 or 4V then they just stop working (ie you will hear no sounds) at which point you just replace the batteries! This method will work for any circuit that requires a split supply. Of course you could use 2 x 12V batteries but they are not so common unless you use 2 car batteries or something crazy! I have used both methods to test modules (2 x 12V car batteries and also 2 x 9V square batteries. However, it is quite easy to find an old 24VDC wall wart in your attic and use a resistor divider to make a virtual ground then 2 big caps for smoothing.
This page shows the various methods described above:
https://tangentsoft.net/elec/vgrounds.html
Kevin.
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Can't seem to bring LEDs to front
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