{"title":"LRB-303","description":"\u003cp\u003eDIY 303 Synthesizer\u003c\/p\u003e","products":[{"product_id":"tb-303-tr-606-bracket","title":"TB-303\/TR-606 Pot Bracket","description":"This is a replacement pot bracket for TB-303\/TR-606 Main Volume and Tempo pots","brand":"Michigan Synth Works","offers":[{"title":"Default Title","offer_id":39446347579478,"sku":"potbracket","price":3.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/3690\/8374\/products\/022.jpg?v=1624449009"},{"product_id":"lrb-303-diy-303-kit","title":"LRB-303 DIY 303 Kit","description":"\u003cp\u003e\u003cstrong\u003ePLEASE READ\u003cbr\u003e\u003cbr\u003eThere are a limited number of kits in stock.  A second large batch has been ordered and will be ready to ship in 2-3 weeks so I am making those available to order now.  Orders will fulfilled in the order received. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/forms.gle\/FUvFVxC1nf2VyjsE6\"\u003e\u003cstrong\u003eIf you are interested in an assembled device click here\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThis a complete kit to build the LRB-303 synthesizer.    This is NOT a beginner kit and some kit building skills are necessary.  Boards are 4 layer FR4 ENIG plated and fully ROHS Compliant.\u003c\/p\u003e\n\u003cp\u003eTools Required:\u003c\/p\u003e\n\u003cp\u003eSoldering Iron \u003cbr\u003eSolder (ROHS SAC305 solder is used on the board)\u003cbr\u003e\u003ca href=\"https:\/\/www.mouser.com\/ProductDetail\/Bourns\/H-90?qs=sGAEpiMZZMukHu%252BjC5l7YZAGmLqP04Zc4%252BF8z0srRPA%3D\"\u003eTrimmer Adjustment Tool\u003c\/a\u003e or Small Blade flat screw driver\u003cbr\u003eWire Strippers\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/michigansynthworks.com\/pages\/lrb-303-build-guide\"\u003e\u003cstrong\u003eBUILD GUIDE HERE (work in progress)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/discord.com\/channels\/1472239884574920900\/1481309241527504966\"\u003e\u003cstrong\u003eBuild Support can be found on the Discord Channel\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThis kit includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSMD populated LRB-303 Mainboard\u003c\/li\u003e\n\u003cli\u003eSMD populated LRB-303 Switchboard\u003c\/li\u003e\n\u003cli\u003eAlps Tact switches, LEDS, Standoffs\u003c\/li\u003e\n\u003cli\u003eSwitched DIN Socket\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMainboard Through hole parts (8 Pots, 2 Brackets, Slide Switch, Audio, DC, CV Jacks)\u003c\/li\u003e\n\u003cli\u003ePrecut and Tinned Ribbon Cables (4 Pcs)\u003c\/li\u003e\n\u003cli\u003eAlps Rotary Switches\u003c\/li\u003e\n\u003cli\u003ePrecut interconnect wires\u003c\/li\u003e\n\u003cli\u003eOS-303 Processor with MIDI harness\u003c\/li\u003e\n\u003cli\u003eDust Covers (4 pcs)\u003c\/li\u003e\n\u003cli\u003eRub-on Case Art Sheet\u003c\/li\u003e\n\u003cli\u003eMetal Keyboard panel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNOT Included:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKnobs\/ Button Caps.  Available from Krumptronics or Sound to Parts\u003c\/li\u003e\n\u003cli\u003eCase \u003ca href=\"https:\/\/jlc3dp.com\/3d-models\/detail\/MX13464-LRB-303-Synthesizer-Enclosure?spm=Jlc3dp.3dmodels\"\u003e\u003cstrong\u003eAVAILABLE HERE\u003c\/strong\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCase Ordering Instructions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAny Material Can be used for the case however I recommend 9600 Resin with Spray Painted Surface finish.  That is proven good.  JLC will probably complain about wall thicknesses, tell them that you accept it as is.   Clear is cool however the material does not have great dimensional stability so warping with clear is possible, YMMV.  Make sure you select \"Plastic Enclosure\" as the application\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0051\/3690\/8374\/files\/jlc3dp_example.jpg?v=1773967310\"\u003e\u003c\/p\u003e","brand":"Michigan Synth Works","offers":[{"title":"Black","offer_id":44211748798550,"sku":"LRB303","price":499.0,"currency_code":"USD","in_stock":true},{"title":"White","offer_id":44211748831318,"sku":"LRB304","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/3690\/8374\/files\/PXL_20260320_001641629_e6151fc2-2562-45be-bd9f-172372a90d64.jpg?v=1774010400"},{"product_id":"os-303","title":"OS-303 Open Source x0x Processor","description":"\u003cp\u003e\u003cstrong\u003ePLEASE READ\u003cbr\u003e\u003cbr\u003eI am offering these separate from the kit on a PREORDER Basis.  OS-303 Processors will ship in 3-4 Weeks\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOpen Source TB-303 Processor.\u003c\/p\u003e\n\u003cp\u003eIncludes:  OS-303 Processor Flashed with most current firmware and MIDI Jack\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/github.com\/djphazer\/OS-303\"\u003edjphazer\/OS-303: Open Source TB-303 CPU firmware\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e\u003ca rel=\"noopener\" href=\"https:\/\/discord.gg\/zGJEkx7E\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/discord.gg\/7j2Vw7jx2f\" target=\"_blank\" rel=\"noopener\"\u003eJoin the Discord Channel!\u003c\/a\u003e\u003ca rel=\"noopener\" href=\"https:\/\/discord.com\/channels\/1472239884574920900\/1473032410940702873\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is drop in replacement for the u650 processor used in TB-303, TR-606, and TR-808.  Currently only the TB-303 code is available.  More info soon!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cpre\u003eMIT License\n\nCopyright (c) 2026 Nicholas J. Michalek\n\nPermission is hereby granted, free of charge, to any person obtaining a copy\nof this software and associated documentation files (the \"Software\"), to deal\nin the Software without restriction, including without limitation the rights\nto use, copy, modify, merge, publish, distribute, sublicense, and\/or sell\ncopies of the Software, and to permit persons to whom the Software is\nfurnished to do so, subject to the following conditions:\n\nThe above copyright notice and this permission notice shall be included in all\ncopies or substantial portions of the Software.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\nIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\nFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\nAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\nLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\nOUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\nSOFTWARE.\u003c\/pre\u003e","brand":"Michigan Synth Works","offers":[{"title":"Default Title","offer_id":44057638862934,"sku":"OS303CPU","price":59.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/3690\/8374\/files\/OS303.jpg?v=1772544663"},{"product_id":"lrb-303-decal","title":"LRB-303 Rubon Decal","description":"\u003cp\u003eThis is for an additional rub-on decal for the LRB-303 DIY Synth.  These are high quality permanent graphics.  Instructions in the LRB-303 build guide\u003c\/p\u003e","brand":"Michigan Synth Works","offers":[{"title":"Black","offer_id":44202123755606,"sku":"LRBdecal-1","price":35.0,"currency_code":"USD","in_stock":true},{"title":"White","offer_id":44202123788374,"sku":"LRBdecal-2","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/3690\/8374\/files\/PXL_20260322_150646402.jpg?v=1774194864"},{"product_id":"tb-303-lrb-303-tempo-potentiometer-with-bracket","title":"TB-303\/LRB-303 Tempo Potentiometer with bracket","description":"\u003cp\u003eC1M Taper, Includes bracket and nut\u003c\/p\u003e","brand":"Michigan Synth Works","offers":[{"title":"Default Title","offer_id":44651168235606,"sku":null,"price":10.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/3690\/8374\/files\/PXL_20260502_143907616.jpg?v=1777733644"},{"product_id":"tb-303-lrb-303-switched-volume-potentiometer-with-bracket","title":"TB-303\/LRB-303 Switched Volume Potentiometer with bracket","description":"\u003cp\u003eA50K Taper, Includes bracket and nut\u003c\/p\u003e","brand":"Michigan Synth Works","offers":[{"title":"Default Title","offer_id":44651168366678,"sku":null,"price":10.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/3690\/8374\/files\/PXL_20260502_143907616.jpg?v=1777733644"}],"url":"https:\/\/michigansynthworks.com\/collections\/lrb-303.oembed","provider":"Michigan Synth Works","version":"1.0","type":"link"}