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DIY high temperature programmable thermostat
A programmable thermostat/thermometer/thermofuse with K-type thermocouple sensor. Range from 0°C up to 1024°C (depending on sensor). Continue reading
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Restoration: Tandberg Sølvsuper 3
Combining parts from two severely damaged Sølvsuper 3s, to make a beautiful and well-sounding radio. Continue reading
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DIY RF Step Attenuator/Dummy Antenna
A cheap and simple RF attenuator, with 10dB steps from 0 to -40dB, and integrated dummy antenna, for use when aligning old AM radios. Continue reading
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Andonstar AD407 microscope add-ons, part 2: Base, PSU and LED dimmer
Extending the base platform. Making a custom PSU and LED dimmer. Continue reading
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Andonstar AD407 microscope add-ons, part 1: extender and LED ring
Some of the drawbacks of this microscope, and how to fix them. Continue reading
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DIY: Mini turntable strobe
A crystal controlled, USB powered strobe light for turntable speed adjustment, with selector for 50 or 60 Hz strobe discs. Continue reading
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Add-on: USB DAC integrated in Tandberg Huldra 11
A DIY DAC which lets an old receiver play music directly from a PC. Continue reading
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Modification: Tandberg Huldra 11 LED illumination
Radio dial illumination with LED strips and a DIY adjustable PSU. Continue reading
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Repair: Tandberg Huldra 11
Some common issues with this receiver, and how to solve them. Continue reading
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DIY: Combined solder fume extractor and work light
Inhaling large amounts of solder fume is probably not healthy, so having a solder fume extractor may be a good idea. There are a lot of solutions on the market, from small and cheap (and inefficient) fans to place on your table top, to expensive ventilation/extraction systems for industrial use. Since the hot fumes rise Continue reading
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DYI: A mini “Arduino” which can power your peripherals
An ATMEGA328P based “Arduino” board with built-in switching voltage regulator, and wide input voltage range. Continue reading
CATEGORIES
- Devices (58)
- Audio amplifiers (4)
- Broadcast receivers (13)
- Instruments (23)
- Microcontrollers (9)
- Power supplies (1)
- Storage (1)
- Televisions (1)
- Tools (11)
- Vacuum tubes (1)
- Horticulture (3)
- Processes (60)
- 3D printing (13)
- Concepts (4)
- DIY (48)
- Modification (5)
- Recycled parts (4)
- Repairs (3)
- Restoration (8)
- Woodworking (1)
ABOUT ME
Self-taught electronics hobbyist. Collector of Tandberg and other Norwegian broadcast receivers.
Retronics 