tag:blogger.com,1999:blog-13561556979781607292024-03-05T09:48:19.026-08:00Robots and circuitsEric Goodchildhttp://www.blogger.com/profile/05885778674201562241noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-1356155697978160729.post-58489995008616617512007-08-11T08:28:00.000-07:002007-08-11T10:03:34.119-07:00FM Radio project<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitUrHah9h4BLXjuSePsiYTLHjfbr62KXk1Tj9J_Tfg38MS9W2BN8OA-tkxbb3PBt6EglQwUzdKViquChcM1KyEFEzovIjb2nmy0MTljrcdr85vfdnFd79PN1732RTj6S60ArNNoCFw3OY/s1600-h/FM+radio.JPG"><img style="float:left; margin:0 10px 10px 0;cursor:pointer; cursor:hand;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitUrHah9h4BLXjuSePsiYTLHjfbr62KXk1Tj9J_Tfg38MS9W2BN8OA-tkxbb3PBt6EglQwUzdKViquChcM1KyEFEzovIjb2nmy0MTljrcdr85vfdnFd79PN1732RTj6S60ArNNoCFw3OY/s400/FM+radio.JPG" border="0" alt=""id="BLOGGER_PHOTO_ID_5097482401455942434" /></a><br />Here we will explore the wonderful world of radio. Now we will start by making L1 the tuning coil of this radio. You will need 22 gauge hookup wire and a metal bolt, 1/4 inch in diameter. Start by striping the insulation off of a 1 foot long piece of wire. Then rap it in the groves of the 1/4 inch bolt 6 times and cut off the excess wire. Leave the bolt in the coil because turning the bolt in and out of the coil tunes the radio.<br /><br /><br />The antenna is a 30 inch long piece of 22 gauge hookup wire and the mic is a condenser microphone. I have tested this circuit up to 1000ft!!! line of site<br />and can probably go even farther with some minor adjustments. You can receive the signal on any FM radio. If you have any questions email me at (ericgoodchild@yahoo.com)Eric Goodchildhttp://www.blogger.com/profile/05885778674201562241noreply@blogger.com0tag:blogger.com,1999:blog-1356155697978160729.post-39492035789591796362007-08-02T17:03:00.001-07:002007-08-02T17:11:13.162-07:00Robot with talent<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/eXBE5rsCavA"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/eXBE5rsCavA" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></object><br />Here is a robot I programed to sing the song green sleeves using <br />a musical algorithm.Eric Goodchildhttp://www.blogger.com/profile/05885778674201562241noreply@blogger.com0tag:blogger.com,1999:blog-1356155697978160729.post-55542143197928714052007-03-27T11:49:00.000-07:002007-03-27T11:53:36.554-07:00Vex Avoidance Robot<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/HIASD2_KMUc"></param><embed src="http://www.youtube.com/v/HIASD2_KMUc" type="application/x-shockwave-flash" width="425" height="350"></embed></object>This is a simple obsticle aviodabs robot that use servo motors I use servo motors because they are more presise.Eric Goodchildhttp://www.blogger.com/profile/05885778674201562241noreply@blogger.com0tag:blogger.com,1999:blog-1356155697978160729.post-22433100639499892142007-03-27T11:22:00.001-07:002007-03-27T11:45:53.061-07:00Vex Line Following RobotThis is a very simple line following robot I made with a vex kit and some simple electronics such as relays and 556 timer chips and some other basic components.I will post how to build it in a later post.<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/MQZDMcpuuXk"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/MQZDMcpuuXk" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></object>Eric Goodchildhttp://www.blogger.com/profile/05885778674201562241noreply@blogger.com0tag:blogger.com,1999:blog-1356155697978160729.post-4978107305116134392007-02-28T14:11:00.000-08:002007-03-27T12:09:34.680-07:00Timer Circuit<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiYnpSlMkRotv76kjs-933BsrTPKDd7wPyx7Zb3eJDPumBDCTGmiHtADxqhkutxfZ1GIpy1LFzwYGUmHIsLHkXWnlyNSlKpDIAH8KCon0JvBVIO0nBph3DUc6OEY4VpRl41yAKu0IfuQi0/s1600-h/9+second+digital+readout+countdown+timer.gif"><img style="cursor:pointer; cursor:hand;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiYnpSlMkRotv76kjs-933BsrTPKDd7wPyx7Zb3eJDPumBDCTGmiHtADxqhkutxfZ1GIpy1LFzwYGUmHIsLHkXWnlyNSlKpDIAH8KCon0JvBVIO0nBph3DUc6OEY4VpRl41yAKu0IfuQi0/s400/9+second+digital+readout+countdown+timer.gif" border="0" alt=""id="BLOGGER_PHOTO_ID_5036711791751747234" /></a><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhTrp9ibuCkd2_WrChbJdHG-jV6pZau6lSCcCXNolrpkeV6-psIqXEd7avf3FXy5r7C4zioP6W0_DifTY28jvI6DYXYNX_UaYQ4SWDyjgsEtieX8Vvb1oYRfpEyCD_ixgsxfiqsR-h7SPA/s1600-h/9+second+LED+timer+and+relay+circuit.gif"><img style="cursor:pointer; cursor:hand;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhTrp9ibuCkd2_WrChbJdHG-jV6pZau6lSCcCXNolrpkeV6-psIqXEd7avf3FXy5r7C4zioP6W0_DifTY28jvI6DYXYNX_UaYQ4SWDyjgsEtieX8Vvb1oYRfpEyCD_ixgsxfiqsR-h7SPA/s400/9+second+LED+timer+and+relay+circuit.gif" border="0" alt=""id="BLOGGER_PHOTO_ID_5036711796046714546" /></a><br />Here are some fun counter chips in a timer circuit.Eric Goodchildhttp://www.blogger.com/profile/05885778674201562241noreply@blogger.com0tag:blogger.com,1999:blog-1356155697978160729.post-39722674282555344112007-02-28T13:58:00.000-08:002007-03-27T12:10:11.171-07:00Inverter Circuits<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhAYeXS-J1GLApKJFGtV65DkYoS85Ivj_BT9o_s20TpfdH-70OrQcEmsKJoeFE9XyX_ejK9RtrBQpO85s3Y-PR7TiiZMKmSP2jAIZ1eC8zkhgsRu1FaKKt_PkwaOYxMA6Fpdfmwpyr9lqs/s1600-h/AC+Power++inverter.gif"><img style="cursor:pointer; cursor:hand;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhAYeXS-J1GLApKJFGtV65DkYoS85Ivj_BT9o_s20TpfdH-70OrQcEmsKJoeFE9XyX_ejK9RtrBQpO85s3Y-PR7TiiZMKmSP2jAIZ1eC8zkhgsRu1FaKKt_PkwaOYxMA6Fpdfmwpyr9lqs/s400/AC+Power++inverter.gif" border="0" alt=""id="BLOGGER_PHOTO_ID_5036708712260195970" /></a><br /><a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjrGeUxAXUxhMUPCTALLEoTkgn34E8b5c0FA1wijk_1D32WdUtOePWsLZFJzoTsCFMrLDlnH-lhtj_vbeDcTkDBO2pejLATlWfoMTjYK8do15B-52uSAd3GcVLP2VARtZjh3bQp9ACWhVw/s1600-h/555dcac.gif"><img style="cursor:pointer; cursor:hand;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjrGeUxAXUxhMUPCTALLEoTkgn34E8b5c0FA1wijk_1D32WdUtOePWsLZFJzoTsCFMrLDlnH-lhtj_vbeDcTkDBO2pejLATlWfoMTjYK8do15B-52uSAd3GcVLP2VARtZjh3bQp9ACWhVw/s400/555dcac.gif" border="0" alt=""id="BLOGGER_PHOTO_ID_5036708725145097874" /></a><br />Here are some good inverter circuits I fond they, oscillate at about 50 to 60Hz. They will probably handle up to about two amps any more and the will auto shut off.Have questions ask me leave your questions in the comment box or email me at ericgoodchild@yahoo.comEric Goodchildhttp://www.blogger.com/profile/05885778674201562241noreply@blogger.com0tag:blogger.com,1999:blog-1356155697978160729.post-46623557394446362872007-02-25T12:51:00.000-08:002007-02-25T13:32:59.554-08:00Light Seeking Robot<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8pOrARsPP2Lqw_Ui_HiV0G0UXMcL5WStXugQ2gfHRjb0FfXSV2hWQW7yD9SKya0_P8w7onOXmsPvmgp5jqzhlWnkd_ag0soReuQm9fD5r-2BoJCTjVNDy5MSv8Pti0KkaNp5LFOLTg5o/s1600-h/light+seeking+robot+using+556+timer.GIF"><img style="cursor:pointer; cursor:hand;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8pOrARsPP2Lqw_Ui_HiV0G0UXMcL5WStXugQ2gfHRjb0FfXSV2hWQW7yD9SKya0_P8w7onOXmsPvmgp5jqzhlWnkd_ag0soReuQm9fD5r-2BoJCTjVNDy5MSv8Pti0KkaNp5LFOLTg5o/s400/light+seeking+robot+using+556+timer.GIF" border="0" alt=""id="BLOGGER_PHOTO_ID_5035582666324465266" /></a><br />Now most people I now tell me that they can not find a good light seeking robot circuit, but I have a very easy to build simple circuit using a 556 duel timer.Now this robot works on the same principle as the 555 oscillator circuit I posted in an earlier post the only difference is that I swapped the 50k pot for 20k photo resistors. You can fiddle with the 220uf capacitors and the 470 resistors but they work the best. The robot should move about one inch a second towards the light for optimum performance, any faster it will miss the light any slower and you will get board real fast.If you have any question leave them in the comment box or email me at ericgoodchild@yahoo.com.Eric Goodchildhttp://www.blogger.com/profile/05885778674201562241noreply@blogger.com5tag:blogger.com,1999:blog-1356155697978160729.post-57312926936612653572007-02-25T12:06:00.000-08:002007-02-25T13:16:41.060-08:00Simple 555 Timer Circuit<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgKHGcFiESBsRohU5sXHZj-fKi-bIYMko0aXiNK27gE5sTfSM6eJpTqHhI4JF6hVuddDihZ9EMlnX1GDb5bjdIXZ5IQyV1GOKJDIKFsuzaF4_W3kgkSJ-BAkidI3cBm_NPub7LCVSYfLAM/s1600-h/555+timer+circuit.GIF"><img style="cursor:pointer; cursor:hand;" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgKHGcFiESBsRohU5sXHZj-fKi-bIYMko0aXiNK27gE5sTfSM6eJpTqHhI4JF6hVuddDihZ9EMlnX1GDb5bjdIXZ5IQyV1GOKJDIKFsuzaF4_W3kgkSJ-BAkidI3cBm_NPub7LCVSYfLAM/s400/555+timer+circuit.GIF" border="0" alt=""id="BLOGGER_PHOTO_ID_5035576812284040802" /></a><br />This is a simple 555 circuit perfect for osculating circuits if you wont the strobe slower swap the 220uf capacitors for some 1000uf capacitors and if you wont it faster try some 150uf capacitor and you can also change out R1 to, try 470 or 910 ohms and if you have any questions ask my by leaving your questions in the comment box or email me at ericgoodchild@yahoo.comEric Goodchildhttp://www.blogger.com/profile/05885778674201562241noreply@blogger.com0