Mailbag Monday Negative Feedback T-Shirts NOTE: Black shirt coming shortly, bug in Teespring site… 555 Timer T-Shirt Warranty VOID T-Shirt Spoliers & Links: Programmable Constant Current Dummy Load Geppetto Electronics SMD Prototype Board The RoBoard Robot Development Board LED Strip Driver Board Madworm projects on Tindie Conrad Retro Radio Kits …
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Today came the news from the ASX that Altium shares have been put on a voluntary trading halt: “Pending an announcement by Altium in relation to a proposed capital raising by institutional investors” Now, this is very interesting indeed for several reasons: Altium have not taken investment since they originally …
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www.electronex.com.au Dave will have his own stand again at Electronex 2014 at the Australian Technology Park in Sydney on Wed 10th and Thurs 11th September Drop by and say HI!
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Some experiments with the Electrocardiogram (ECG) circuitry in the St Jude Pacemaker Monitor Heart Rate Analyser. Forum HERE Podcast: Download
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What’s inside an IEC60601-1 medical class 5V mains DC-DC plugpack? What is the difference between PCB clearance and creepage? A German FRIWO 5V FW7555M/05 brand medical grade isolation unit vs a cheap Wun Hung Lo consumer brand. Also a comparative look at transformer construction. Datasheets & Links: www.farnell.com/datasheets/30889.pdf IEC_60601 Rubycon …
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Mailbag Monday. Dave opens his mail Forum HERE Spoilers: Keithley 177 Multimeter teardown schmeatic and Manual Commodore GL987R Calculator Teardown and VFD probing. Sharpie Hanger Kickstarter Podcast: Download
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Some interviews from the 2014 Sydney Mini Maker Faire at the powerhouse museum. Podcast: Download
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What’s inside a dial-in pacemaker monitor system? Datasheets: LMV824 MAX4330 CNY64 Optocoupler ADSP-2185N DSP CX88168 Smart Modem with Voice CODEC MAX994 10bit ADC Meder Reed Sensor Probe shock video showing the piezoelectric effect Forum HERE Podcast: Download
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Lots of test equipment auction goodness from Precision Mechatronics who went into liquidation. And is it possible to mod a system PSU with binding posts? Service manual HERE Keithley 2400 SMU Source Unit Agilent 54845A 1.5GHz Infiniium Oscilloscope Agilent E3646A dual output bench power supply Agilent 6641A and 6643A DC …
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Behind the scenes at the 2014 Sydney Mini Maker Faire at the Powerhouse Museum. Podcast: Download
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Highlights from the 2014 Sydney Mini Maker Faire Introduction Video Behind The Scenes Video Growing Maker Communities Video Podcast: Download
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Dave explains a big trap in high frequency measurement with your oscilloscope. Based on a viewer request, Dave demonstrates how to incorrectly and then correctly measure the signal output level over frequency of your function generator using your oscilloscope. Some whiteboard transmission line theory is thrown in as well. Forum …
Read More »I’ll be at the Sydney Maker Faire this weekend (16th-17th), roaming around with the camera for two days, come up and say HI. I’ll also be having a “Fireside chat” with Sebastien Eckersley-Maslin (CEO of startup incubator BlueChilli)
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Mailbag Monday Coin Validator & Laser Scanner Teardowns Datasheets SCX6206 1980’s Microchip/GI EEPROM Chopper Amplifiers Forum HERE Podcast: Download
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In the last day there has been some buzz about the uBeam wireless energy charging device, which of course, like all great new inventions, does not actually exist yet, it just needs the magic input of money. It ticks all the media story hype boxes though – designed by a …
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