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	<title>Hobby DIY Garage - Electronic Projects</title>
	
	<link>http://www.dapj.net/hobby</link>
	<description>Hobby and Do-It-Yourself Projects, DIY Electronics, Gadgets News.</description>
	<lastBuildDate>Mon, 06 Sep 2010 03:08:00 +0000</lastBuildDate>
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		<title>Convert Analog to Digital with a V-F</title>
		<link>http://feedproxy.google.com/~r/HobbyDiyGarage/~3/mtkMmw_tmew/</link>
		<comments>http://www.dapj.net/hobby/?p=694#comments</comments>
		<pubDate>Mon, 06 Sep 2010 03:08:00 +0000</pubDate>
		<dc:creator>dapj</dc:creator>
				<category><![CDATA[Hobby Lab]]></category>

		<guid isPermaLink="false">http://www.dapj.net/hobby/?p=694</guid>
		
			<content:encoded><![CDATA[A Low cost A/D with a Potential of 5KV Isolation from Computing elements by use of Normal/Special Opto-Couplers. This can give better resolution and accuracy than a 8 bit A/D. may be close to 10 bit A/D. Added advantage is that you can optically isolate the inputs.
Suppose your temperature sensor touches a heating element OR [...]<br/>
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		<item>
		<title>Analog Op-Amp Tutors with Gadgets</title>
		<link>http://feedproxy.google.com/~r/HobbyDiyGarage/~3/4Yk6XxdNrZw/</link>
		<comments>http://www.dapj.net/hobby/?p=693#comments</comments>
		<pubDate>Sat, 04 Sep 2010 10:31:00 +0000</pubDate>
		<dc:creator>dapj</dc:creator>
				<category><![CDATA[Educational Tutors]]></category>

		<guid isPermaLink="false">http://www.dapj.net/hobby/?p=693</guid>
		
			<content:encoded><![CDATA[I have made some iGoogle Gadgets with canvas view, these are analog opamp tutors. Interactive Tutorial with Simulated Meters and Potentiometers, demonstrating how Operational Amplifier functions in different configurations.
Op-Amp Simulation using Javascript
Inverting Amplifier Gadget &#8211; Get Inverting Op-Amp Tutorial
Non-Inverting Opamp Gadget &#8211; Get Non-Inverting Op-Amp Tutorial
Buffer Unity Gain Amp &#8211; Get Buffer Unity Gain Op-Amp [...]<br/>
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		<item>
		<title>Genie E18 Activity Kit – PCB118</title>
		<link>http://feedproxy.google.com/~r/HobbyDiyGarage/~3/JH09FGawSII/</link>
		<comments>http://www.dapj.net/hobby/?p=691#comments</comments>
		<pubDate>Sat, 04 Sep 2010 09:32:00 +0000</pubDate>
		<dc:creator>dapj</dc:creator>
				<category><![CDATA[Embedded Micro]]></category>
		<category><![CDATA[PIC-Micro]]></category>

		<guid isPermaLink="false">http://www.dapj.net/hobby/?p=691</guid>
		
			<content:encoded><![CDATA[Low-cost microcontroller programming system for Education. Easy-to-use flowchart software, add intelligence and control to your designs. USB or Serial Cable for Programming.
Some Features

Run multiple programs at the same time.
Run &#38; Test programs live.
Unique Plug &#38; Play USB Cable.
Compatible with Picaxe circuits &#38; PIC Logicator.
Supports advanced I/O such as events, interrupts and infrared.
On-screen monitoring and calibration [...]<br/>
<br/>
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		<item>
		<title>Electronic DIY Projects from Dago</title>
		<link>http://feedproxy.google.com/~r/HobbyDiyGarage/~3/crLbKSjx9b4/</link>
		<comments>http://www.dapj.net/hobby/?p=688#comments</comments>
		<pubDate>Sat, 04 Sep 2010 05:50:00 +0000</pubDate>
		<dc:creator>dapj</dc:creator>
				<category><![CDATA[Hobby Lab]]></category>
		<category><![CDATA[Nordic-Countries]]></category>
		<category><![CDATA[Photography]]></category>

		<guid isPermaLink="false">http://www.dapj.net/hobby/?p=688</guid>
		
			<content:encoded><![CDATA[USB-to-1-wire Adapter, ALC-60X Argon Lasers, DDS Function Generator and Gainclone Stereo Amplifier.

Electronic DIY Projects from Dago
Make a temperature logger for your room on a PC, This uses DS1820 sensors from Maxim and USB for interfacing. USB to 1-wire adapter helps attaching sensors to the computer. This circuit also uses a MAX8881 &#8211; 12V, Ultra-Low-IQ, Low-Dropout [...]<br/>
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		<item>
		<title>Microohm Meter with LED Analog Bar</title>
		<link>http://feedproxy.google.com/~r/HobbyDiyGarage/~3/IZakKa39TGY/</link>
		<comments>http://www.dapj.net/hobby/?p=684#comments</comments>
		<pubDate>Thu, 02 Sep 2010 01:57:00 +0000</pubDate>
		<dc:creator>dapj</dc:creator>
				<category><![CDATA[Schematics]]></category>

		<guid isPermaLink="false">http://www.dapj.net/hobby/?p=684</guid>
		
			<content:encoded><![CDATA[This indicates like LM3914 in dot-mode. It is a drawing i made made to troubleshoot a gadget, around two decades ago. Strangely it had a echo of a design i had made into a 7107 dpm years before that. Now i am scanning all my drawing and notes, useful or not. Clean or with errors. [...]<br/>
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		<item>
		<title>Two PCB Mills – Jonathan Ward and Ilan Moyer</title>
		<link>http://feedproxy.google.com/~r/HobbyDiyGarage/~3/FT04TtlcbRg/</link>
		<comments>http://www.dapj.net/hobby/?p=680#comments</comments>
		<pubDate>Wed, 01 Sep 2010 08:05:00 +0000</pubDate>
		<dc:creator>dapj</dc:creator>
				<category><![CDATA[Hardware]]></category>
		<category><![CDATA[Machines-Tools]]></category>

		<guid isPermaLink="false">http://www.dapj.net/hobby/?p=680</guid>
		
			<content:encoded><![CDATA[Make your own PCB Mechanical Routing/Erosion/Milling Machine at a low cost.

PCB Mill &#8211; Jonathan Ward &#8211; MIT
&#8220;Design a low cost circuit board milling machine optimized to be mass-produced.&#8221;
Low Cost PCB Mill lan Moyer
The overall device has a working area of 4&#8243; x 6&#8243; with a footprint roughly the size of a letter-sized sheet of paper. [...]<br/>
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		<item>
		<title>Mains Powered China Emergency Bulb</title>
		<link>http://feedproxy.google.com/~r/HobbyDiyGarage/~3/LvMB4vl_rV0/</link>
		<comments>http://www.dapj.net/hobby/?p=679#comments</comments>
		<pubDate>Wed, 01 Sep 2010 06:32:00 +0000</pubDate>
		<dc:creator>dapj</dc:creator>
				<category><![CDATA[Electrical]]></category>
		<category><![CDATA[Gadgets]]></category>
		<category><![CDATA[Lamps-LED]]></category>
		<category><![CDATA[Schoodles]]></category>

		<guid isPermaLink="false">http://www.dapj.net/hobby/?p=679</guid>
		
			<content:encoded><![CDATA[A typical Mains Powered China Lamp. On power down, LED light turns on for around 1/2 hr. Gets damaged on lightning activity and wide (uS not nS) transients above 300V. Drawing may have error.






From Schoodles<br/>
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		<item>
		<title>Torch or Flashlight Circuit Improvements</title>
		<link>http://feedproxy.google.com/~r/HobbyDiyGarage/~3/xs4j-HYtuGE/</link>
		<comments>http://www.dapj.net/hobby/?p=677#comments</comments>
		<pubDate>Mon, 09 Aug 2010 07:13:00 +0000</pubDate>
		<dc:creator>dapj</dc:creator>
				<category><![CDATA[Gadgets]]></category>
		<category><![CDATA[Schoodles]]></category>

		<guid isPermaLink="false">http://www.dapj.net/hobby/?p=677</guid>
		
			<content:encoded><![CDATA[I fixed a China Torch with New LEDs and a Diode, it failed probably on a drop shock, the battery wire cut &#8230; then when put on charge Few LEDs went bad, as battery was absent in ckt.
design review &#8211; 1.5uF voltage rating can increase like 440V AC. A current source with low dropout voltage [...]<br/>
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		<item>
		<title>LED Lamp – Simple Bed-Lamp Circuit</title>
		<link>http://feedproxy.google.com/~r/HobbyDiyGarage/~3/fAA0pgl3w_E/</link>
		<comments>http://www.dapj.net/hobby/?p=676#comments</comments>
		<pubDate>Mon, 09 Aug 2010 02:55:00 +0000</pubDate>
		<dc:creator>dapj</dc:creator>
				<category><![CDATA[Gadgets]]></category>
		<category><![CDATA[Lamps-LED]]></category>
		<category><![CDATA[Schoodles]]></category>

		<guid isPermaLink="false">http://www.dapj.net/hobby/?p=676</guid>
		
			<content:encoded><![CDATA[LED Night lamp, Clock Lamp to see time at night. It is a Green Lamp just 50mA, but its Blue in Color.






From Schoodles



This can be a first LED Lighting project anybody can do. Just twist wire, use insulation tape. Get a Nice Mains adapter that will provide 6V DC. 5V also will do. A prior [...]<br/>
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		<title>Mains Adapter 230V AC 50 Hz to Rectified DC</title>
		<link>http://feedproxy.google.com/~r/HobbyDiyGarage/~3/z2njQiB_UZw/</link>
		<comments>http://www.dapj.net/hobby/?p=674#comments</comments>
		<pubDate>Sun, 08 Aug 2010 10:25:00 +0000</pubDate>
		<dc:creator>dapj</dc:creator>
				<category><![CDATA[Electrical]]></category>
		<category><![CDATA[Gadgets]]></category>
		<category><![CDATA[Schoodles]]></category>

		<guid isPermaLink="false">http://www.dapj.net/hobby/?p=674</guid>
		
			<content:encoded><![CDATA[Mains Adapter Converts 230V AC 50 Hz to Rectified DC which replaces a Battery Pack. It was also called Battery Eliminator by older generations as it was used to save Battery Cost in AM Radios.






From Schoodles



The most important product safety aspect is the transformer, may it be well isolated, may it use a split bobbin, [...]<br/>
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		<item>
		<title>Ni-Cd and Li-ion Battery charger Generic</title>
		<link>http://feedproxy.google.com/~r/HobbyDiyGarage/~3/VudWioIpai0/</link>
		<comments>http://www.dapj.net/hobby/?p=672#comments</comments>
		<pubDate>Sun, 08 Aug 2010 06:10:00 +0000</pubDate>
		<dc:creator>dapj</dc:creator>
				<category><![CDATA[Electrical]]></category>
		<category><![CDATA[Schoodles]]></category>

		<guid isPermaLink="false">http://www.dapj.net/hobby/?p=672</guid>
		
			<content:encoded><![CDATA[This is a Generic charger that is made by many brands, the circuit is an approximation of all. Some improvements suggested. Some brands in europe and usa also use this circuit. This works well, but may not be in the best interest of battery life. The cost of the charger needs to be low. So [...]<br/>
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		<item>
		<title>LED Flashlight made out of a China Lamp</title>
		<link>http://feedproxy.google.com/~r/HobbyDiyGarage/~3/yR5rDggQ68E/</link>
		<comments>http://www.dapj.net/hobby/?p=669#comments</comments>
		<pubDate>Sat, 07 Aug 2010 07:42:00 +0000</pubDate>
		<dc:creator>dapj</dc:creator>
				<category><![CDATA[Gadgets]]></category>
		<category><![CDATA[Schoodles]]></category>

		<guid isPermaLink="false">http://www.dapj.net/hobby/?p=669</guid>
		
			<content:encoded><![CDATA[LED Flashlight made out of a China Lamp that was busted on a High voltage surge during a Thunderstorm.






From Schoodles



I got many LED lamps, mainly from china. The Chinese Entrepreneurs are Creative and Adventurous. There is a problem though, the quality, reliability and safety factors are not so good. These are so for even branded [...]<br/>
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