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Preamplifier 2012 (1) - introduction and line-in/tone/volume board (110650)

by ClemensValens
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Audio lovers, sit up. Besides presenting a truly high end audio control preamplifier for home construction, this article series also aims to show how low-impedance design and multiple-amplifier techniques can be used to significantly reduce the noise levels in analogue circuitry.
14419 views | 20 comments
MAXREFDES99# LED Shield Experiments [160267]
Product available

MAXREFDES99# LED Shield Experiments [160267]

by ClemensValens
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Software for the Maxim MAXREFDES99# Display Driver Shield, an Arduino & ARM mbed compatible shield with a 16x16 LED matrix on it.
66 views | 0 comments
Platino Soldering Station [140107 ]
Product available

Platino Soldering Station [140107 ]

by Sunil_M
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A simple Platino based soldering station for not too demanding (hobbyist) applications. Temperature range of 90 – 450 degrees Celsius with temperature readout on an LCD.
15994 views | 57 comments
New Software for Network Connected Signal Analyzer
Product available

New Software for Network Connected Signal Analyzer

by BreedJ
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I recently bought the Network Connected Signal Analyzer from the Elektor shop.http://www.elektor-labs.com/project/network-connected-signal-analyzer-150211.14581.html
2503 views | 22 comments
230V AC dimmer, mains isolated, using P12F629

230V AC dimmer, mains isolated, using P12F629

by DanyR
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This is a very simple mains isolated dimmer with a triac output (phase control). It uses timer0 to do the timing.
4380 views | 21 comments
Weather Display

Weather Display

by Nickelgrass
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This is a stand alone WiFi weather display that also features UV and moonphase data. It is powerd by an ESP8266 with custom firmware an an AVR.
2440 views | 7 comments
UV Exposure Unit with built in PIC-based timer

UV Exposure Unit with built in PIC-based timer

by Steveg0
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The idea of using Ultraviolet LEDs to expose photo-sensitive circuit board is not a new one but with this design I hope to provide a solution with consistent timed exposure using very simple circuit construction, downward exposure and using off-the-peg boxes to house the unit. In fact, everything has been designed with the home constructor in mind.
7989 views | 3 comments
OBD2 for Raspberry Pi

OBD2 for Raspberry Pi

by Thomas Beck
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OBD2 for Raspberry Pi with Pi-OBD add-on board or DXM OBD2 module and OBD2 software taken from my other labs project Firmware Update for OBD2-Analyser NG.
9964 views | 0 comments
Card Sound

Card Sound

by fasoft
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Play sounds stored onto SD card with 2x 7W output power.
164 views | 4 comments
Upgrade Magic Eye EM84 to Windows10

Upgrade Magic Eye EM84 to Windows10

by cvdo
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This Elektor-project from 2010 uses an EM84 magic eye to display the cpu usage of a pc. Great, but it doesn't work any more under Windows 10 :-(
2909 views | 6 comments
AUDIO CLASS-D POWER AMPLIFIER

AUDIO CLASS-D POWER AMPLIFIER

by sequencer
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Simple, single-channel, low-cost, high-efficiency, high-performance audio class-D power amplifier.
4702 views | 22 comments
Wireless High Power Transmission [160119]

Wireless High Power Transmission [160119]

by TonGiesberts
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For those who like to experiment with wireless power transfer this circuit can deliver almost 50 W at an efficiency of 88 % (supply voltage 12-24 V).
7680 views | 6 comments
Magic Eye CPUshow for Windows 10

Magic Eye CPUshow for Windows 10

by JDJK
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Modify MagicEye CPUshow for Windows 10
174 views | 2 comments
Solar charger for smartphone:

Solar charger for smartphone:

by gfaman
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How a small solar panel can recharge a smartphone through the USB plug:
3502 views | 4 comments
Bluetooth Relay on the Elektor-Labs Prototype Board ELPB-NG (150180)

Bluetooth Relay on the Elektor-Labs Prototype Board ELPB-NG (150180)

by raarts
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I came up with this project because a colleague of mine wanted an easy way to control his three garage ports, so I thought it would be nice to control it with an Android app via Bluetooth.
3118 views | 8 comments
Versatile Switch Mode Power Supply PWM Controller [ 150100 ]

Versatile Switch Mode Power Supply PWM Controller [ 150100 ]

by Mickael.Delayen
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Although SMPS (switch mode power supplies) can take various structures (Buck, Boost, Flyback, Forward, etc.), they are always based o
5683 views | 5 comments
Elektor Uno R4 [150790]
Staff pick
Product available

Elektor Uno R4 [150790]

by ClemensValens
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This board is an evolution of the Arduino Uno R3 board. Identical form factor as the Uno but based on the ATmega328PB-AU, this board has many more features than the Uno. Because it is backwards compatible you can think of it as revision 4 of the Uno, which is why we called it the R4.
12367 views | 55 comments
Accessory of programming

Accessory of programming

by ProfTourn
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If you need to create a circuit of small size with a microcontroller to be programmed, the programming connector size will be a handicap. The install
105 views | 0 comments
Open-source ELM327 OBD adapter

Open-source ELM327 OBD adapter

by asidorenk
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The adapter allows you to interface with your car's OBD-II bus using the ELM327 command set
110 views | 0 comments
SolarBench: test your solar panel up to 300W with a MPPT matchbox

SolarBench: test your solar panel up to 300W with a MPPT matchbox

by greenlicium
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What is the power really delivered by this solar panel? is that panel working properly? are the real performance derated because of aging or counterfeit origin?This small and convinient tool can help you selecting and sorting panels by finding MPPT automaticaly. It also displays Voltage and Amps when MPPT pops out.
2922 views | 7 comments
Q-Watt - Simple Audio Power Amplifier (110656)
Staff pick
Product available

Q-Watt - Simple Audio Power Amplifier (110656)

by TonGiesberts
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Simple audio power amplifier A kit with the PCB and all the needed components (except
36220 views | 81 comments
Latest comments
Calpe
Calpe 1 hour ago
Sadly, i'm getting no where with these items: - I am unable to place my spares order from the U.K. until this is clear. The spare list consists of: - Pinheaders Pinheaders with Mating Sockets Pinheaders with jumper Pinheaders with Socket Headers Jumpers Socket Headers Boxheaders Although Farnell has a 'filter', what i want to avoid is ordering the incorrect types. Help would be greatly appreciated.  
Preamplifier 2012 (1) - introduction and line-in/tone/volume board (110650)
rjv
rjv 4 hours ago
is pin 15 and 16 from the display attached?
Platino Soldering Station [140107 ]
rjv
rjv 4 hours ago
it will do fine, the soldering station accepts from 15 to 20 volts
Platino Soldering Station [140107 ]
RICH OBERMEYER
RICH OBERMEYER 17 hours ago
What happened to the great team of Neal and Breed working together to add some new features? In March it was exciting. Here in almost October it looks like it died out and lost interest which also kill elektor readers interest.  Breed suggested he might get back from something else more exciting by end of year. The boot loader is critical and that needs to come from the factory or each user has to buy a pickit, install all the software, and figure out how to make it work.  A built in UI boot loader makes it trivial for newbies to get excited.  They really can make their own features. A roadmap and wiki might get some interest going. It needs a champion and right now I don't see one. I held off buying mine until I see it moving.  Right now it not looking like a HOLD, not a BUY status.
New Software for Network Connected Signal Analyzer
DanyR
DanyR 17 hours ago
Thanks Roland. In the MOC3020M is stated:typical 115/240 Vac(rms) applicationsSolenoid/Valve ControlsLamp BallastsInterfacing Microprocessors to 115/240 Vac PeripheralsMotor Controls Incandescent Lamp Dimmers So I am a little surprised...
230V AC dimmer, mains isolated, using P12F629