PCBWay Supports High Precision Advanced PCBs: https://www.pcbway.com/ This experiment involves setting up a DC current loop so phones or modems can come alive and interact without needing a landline service. Then an AC ring voltage is added to the simulated phone line so the phones or modems can ring when on-hook. This is the first step in a bigger project where more complete functionality will be added to the system. Schematic/Files: https://github.com/GadgetReboot/RJ_6P6C_Header PCBs at PCBWay.com: https://www.pcbway.com/project/shareproject/6p6c_RJ_Jack_Breakout_PCB_6ee49e7e.html Registered Jack details and pinouts https://en.wikipedia.org/wiki/Registered_jack#RJ11,_RJ14,_RJ25_wiring Telephone interface info and circuits https://www.epanorama.net/circuits/teleinterface.html https://www.epanorama.net/circuits/telephone_ringer.html Phone line info http://massis.lcs.mit.edu/archives/technical/how.phones.work https://www.elenco.com/wp-content/uploads/2017/10/TT400K-2.pdf TIA-968-A Technical Requirements for Connection of Terminal Equipment to the Telephone Network https://web.archive.org/web/20110723105039/https://www.part68.org/SecureDocuments/TIA-968-A-Final.pdf CS-03 Part I — Requirements for Terminal Equipment (TE) and Related Access Arrangements Intended for Direct Connection to Analog Wireline Facilities https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf09840.html If you'd like to support the channel, you can: Support me on Patreon: https://www.patreon.com/gadgetreboot Become a channel member (click the Join button): https://www.youtube.com/c/GadgetReboot Shop through my affiliate links (I may earn a small commission, costs you nothing)! Banggood https://www.banggood.com/custlink/3vKYLANH8N Aliexpress https://s.click.aliexpress.com/e/_AFeHwB Amazon.com https://www.amazon.com/?&_encoding=UTF8&tag=gadgetreboo05-20&linkCode=ur2&linkId=952875a3564e2204d1786f94b9e1a8d3&camp=1789&creative=9325 Amazon.ca https://www.amazon.ca/?&_encoding=UTF8&tag=gadgetreboot-20&linkCode=ur2&linkId=70fa82315ac48f03342938bd4fb93535&camp=15121&creative=330641 Videos are mirrored at LBRY/Odysee: https://odysee.com/@GadgetReboot:4 #ElectronicsCreators ... https://www.youtube.com/watch?v=jpV_iGS8EfU

Taking advantage of a few sales, I bought a new overhead LED shop light fixture, a heavy duty hydraulic shop stool, and several part storage tray cabinets. I haven't had a dedicated work space for electronics in a long time so the test equipment and parts have been all over the house. I decided to finally pick a corner in the basement and start building up a work environment for projects. Now I can focus on building and experimenting with some projects. To test out the new work bench, I opened a few eBay shipments including: Surface mount resistor kit 1K - 1M Potentiometer assortment Flat Flex Cable connectors (surface mount) PCB break out boards for flat flex connectors to 0.1 inch through hole And analyzing some specs of a multi turn potentiometer Patreon: https://www.patreon.com/gadgetreboot Pinterest: https://www.pinterest.ca/GadgetReboot Twitter: @GadgetReboot https://twitter.com/gadgetreboot ... https://www.youtube.com/watch?v=tkU-iIOGp2Y

Parts for upcoming projects, tools to keep on using, the re-stocking fun never ends! Polyimide High Temperature Tape 36 Yds Amazon.com: https://amzn.to/37lusOt Amazon.ca: https://amzn.to/3b8eGaW Dual Channel Digital Thermometer with Two K- Type Thermocouples LCD Backlight Amazon.com: https://amzn.to/2ZnqPmX Amazon.ca: https://amzn.to/3jWPEQ6 Note: I may earn a small amount from qualifying purchases made from these Amazon affiliate links PCM5102APWR I2S Audio DAC TSSOP-20 https://www.aliexpress.com/wholesale?SearchText=pcm5102a 2.54mm/0.1" Pitch PCB Screw Terminal Blocks Connector 2P 3P 4P 5P 6P 7P 8P 9P 10P 12P 16Pin Terminals 150V 6A for 26-18AWG Cable https://www.aliexpress.com/wholesale?SearchText=screw+terminal+0.1 LM4040 shunt voltage reference https://www.digikey.ca/en/products/detail/texas-instruments/LM4040DIM3-4-1-NOPB/305139 Oscilloscope probe to BNC Plug https://www.digikey.ca/en/products/detail/cal-test-electronics/CT2708/5028727 Cable BNC PLUG-PLUG RG58 24" 50 ohm 4 GHz https://www.digikey.ca/en/products/detail/cinch-connectivity-solutions-johnson/415-0054-024/457177 50 ohm BNC Tee Adapter https://www.digikey.ca/en/products/detail/te-connectivity-amp-connectors/5-1634532-1/1755958 50 ohm BNC Terminator https://www.digikey.ca/en/products/detail/cinch-connectivity-solutions-aim-cambridge/27-9008/3830268 Support me on Patreon: https://www.patreon.com/gadgetreboot LBRY/Odysee: https://odysee.com/@GadgetReboot:4 ... https://www.youtube.com/watch?v=tnxJQ7NcBmY

PCBWay Supports High Precision Advanced PCBs: https://www.pcbway.com/ This PCB provides an I2C interface to control 555 timer frequency and the ability to switch multiple audio channels on and off to create simple or complex tones, melodies, or sound effects. Arduino Uno is used as the I2C controller in this project. This PCB can be ordered from PCBWay (I will receive a small commission): https://www.pcbway.com/project/shareproject/555_Sound_Generator_I2C_Controlled.html Sketch & Schematic https://github.com/GadgetReboot/GR_555_Controller Atari Punk Console / Stepped Tone Generator https://en.wikipedia.org/wiki/Atari_Punk_Console https://www.jameco.com/Jameco/workshop/diy/atari-punk-console.html Datasheets https://www.renesas.com/us/en/www/doc/datasheet/x9c102-103-104-503.pdf https://www.renesas.com/br/zh/www/doc/datasheet/icm7555-56.pdf http://www.ti.com/lit/ds/symlink/cd4066b.pdf?ts=1590842832904 http://www.ti.com/lit/ds/symlink/pcf8574.pdf?ts=1590843096845 Patreon: https://www.patreon.com/gadgetreboot Pinterest: https://www.pinterest.ca/GadgetReboot Twitter: @GadgetReboot https://twitter.com/gadgetreboot ... https://www.youtube.com/watch?v=oFtGOOA25tA