Welcome to our DIY electronics website

• New! Test FM transmitter, based on a 300mW RDVV shareware edition where you use your PC as stereo and RDS sound processor.
• Updated! Pulse to DTMF converter for GNT-A F68 rotary dial telephone used as IP telephone on e.g. a Sipura SPA 2102 telephone adapter.
• Tone control based on Sony IC TDA7439 inspired by the Elektor Magazine.
• Air/Fuel monitor, originally made by Buckeye Triumphs.
• Shooting simulator with speaking functionality simulating a track shooting commander in the following disciplines: standard pistol, sport pistol and terrain pistol.
• Light controller for (new) speed trainer/timer with red/green signal functionality simulating a track shooting commander giving the following commands: Fire and Stop. Now with pcb and schematic files.
• Voice module for (new) speed trainer/timer with speaking functionality simulating a track shooting commander giving the following commands: Ready, Fire, Stop and Finished.
• Test stereo FM transmitter with RDS, based on a 300mW RDVV shareware edition now with enclosure and CAD files.
• IR sampler (IR analyzer and experimental iPod/iPhone IR remote too).
• Adpcm2hex PIC software. With a sound file, a good sound editor eg. GoldWave, Microchip WinSpeech from application note AN643 and this software you can make sound with 8 bit PIC's.
• New improved version of the speed shooting trainer / timer used to practice speed shooting, 25 meter standard pistol, 25 meter sport pistol and, terrain pistol, now with schematic.
• 9 Volt Duracell Ultra vs. 9 Volt Duracell Plus test with our IR datalink, check out if you should  buy expensive or cheap battery.
• BUF634 / OPA627 headphone amplifier, now with schematic.
• Program for IR datalink USB in version 3.3 now with tone control.
• IR datalink USB standalone unit, holds up to 50 apparatus, now with schematic.
• IR datalink USB online, now with schematic.
• Lundahl moving coil LL1931 step up transformer and my brother's handy MC stepup calculator program, tested in Windows7 x64 and x86. We have added Lundahl's newest step up transformer LL1941 and LL1943 to the program.
• Speed shooting trainer / timer used to practice speed shooting, 25 meter standard pistol, 25 meter sport pistol and, terrain pistol, now with schematic.
• Four in a row game controlled by a 18F252 PIC, with 43 two color 10 mm leds, now with schematic.
• 3 Watt LED mood lamp, inspired by Toon Beertsen, now controlled by a Sony IR remote, with 15 different light modes, now with schematic.
• TDA1543 no oversampling DAC, inspired by Nonoz III DAC.
• 7 inch 45 rpm single adapter and 1/2 inch pickup head shell adapter.
• Heat sink calculator. Very useful when choosing power transistors, heat sinks etc. My brother's program are featured in the Elektor February 2010 edition in the article "Tailored Cooling (online help for dimensioning)" and are referred to as "...small but very handy" :-)
• IR extender for Philips RC5 and RC6 IR remote controls e.g. Windows Media Center Edition and Philips electronics, now with schematic.
• FAQ (frequently asked question) page with some of the questions I have been asked regarding the DIY projects on this webpage.
• Accugraph a NiCd/NiMh/LiPo discharger and data collector, now with schematic.
• Shooting timer: train in 25 meter standard pistol, 25 meter sport pistol and terrain pistol. With sound files for e.g. your iPod, now with schematic.
• Nelson Pass (x)ono clone RIAA preamplifier.
• How to make your own photo pcbs. With photos showing the whole DIY photo pcb manufacturing process incl. double sided pcbs.
• Audiotron radio station setup file editor, uses Access 2000 or newer, now in version 4.
• Links to other Hi-Fi DIY websites, that has inspired us.
• Read Training device, train yourself to read faster, now with schematic and txt2hex software version 3.00.
• IR code examples used to configure IR datalink.
• Shops where we buy all the parts.
• 6H30 SRPP preamplifier with Alps motor potentiometer, now with schematic.
• EL84 Single Ended 2 Watt class A amplifier in triode configuration, now with schematic.
• IR datalink used to configure Aleph P preamplifier, tuner,5.1 (6 channel) volume control,  6H30 preamplifier, TDA1541A DAC and TDA1543 DAC now in version 11 and with schematic.
• Surround 5.1 volume control remote controlled with three PGA2310 and six OPA134 as input buffers, now with schematic.
• Aleph P 1.7 clone preamplifier, with a new volume attenuator pcb version 2, new PIC processor and new program.
• Tuner with 6H30Pi triode SRPP buffer, now with schematic.
• 6C33/6SN7 SET 15W Class A amplifier, new front with blue/white LCD display and schematic's.
• Nelson Pass Aleph 5 mono block clone, 60 Watt in 8 ohm single ended Class A amplifiers.
• No oversampling dual Philips TDA1541A DAC with 6C45Pi tube SE output buffer, with re-clock circuit. We have face lifted the DAC with new control and tube buffer pcb and new aluminum front plate and all schematic's.
• Nelson Pass A40, 40 Watt in 8 ohm Class A amplifier.
• PIC controlled frequency synthesizer with MAX038 waveform generator, now with schematic.

This page was last updated 2012-03-31.