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Money has to be saved everywhere these days, but should a public entity be allowed to flog the family silver? The city of Stralsund, UNESCO world heritage site, has recently silently and covertly sold off a unique library collection. An online petition was started with the aim to revoke this action: […] Continue reading City of Stralsund flogs unique library collection Based on my experience buying electronic components on ebay I decided to maintain a personal white-list and black-list of ebay sellers.  Ok, let us continue the reverse engineering of the E27 LED bulb LEDARE from IKEA. After describing the actual light emitting diode assembly in the previous post, I will today look deeper under the hood into the power supply. Disassembling the socket of the clear E27 LED bulb LEDARE from IKEA to […] Continue reading The best LED bulb? – part 2  At least the best one I have seen so far. After giving a lecture on LEDs yesterday I finally unpacked and tested my latest buy – the clear E27 LED bulb LEDARE from IKEA. The clear E27 LED bulb LEDARE from IKEA. (Image linked from IKEA’s homepage.) The specs of this LED bulb […] Continue reading The best LED bulb?  The Atmel STK500 development board does support many but not all of Atmels AVR controllers. As an enhancement a STK505 unit was constructed by Atmel to support the ATtiny24/44/84 series of microcontrollers, which come in a 14-pin DIP package. Other plugin-boards for other pinouts have also been made, but since the STK500 itself is […] Continue reading DIY STK505 replacement |
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