An Easy RP2040 Logic Analyzer Shield - Scoppy Scope Part 2Scoppy Scope Logic analyser Shield with Logic ProbesAs part two out of a series of three articles (part 1), This is the Scoppy RP2040 Logic analyzer shield, for use with our Raspberry Pi Pico Carrier board and the Scoppy Oscilloscope firmware for the RP2040.In Part one, we took a very quick look at the installation of the firmware, as well as the basic limitations for use of this very useful project.In this part, I want to take a quick look at my Logic Analyser shield, for use with this project, as well as the Raspberry Pi Pico Carrier Board. In part one, we saw that the logic analyzer inputs are limited to 3.3v by the RP2040 GPIO pins. This shield is a prototype attempt to overcome those limitations by using logic-level conversion. What is on the PCB ?The PCB is designed to be an add-on shield for the Makeriot2020 Raspberry Pi Pico Carrier Board. (Get your own here) It is in the same form factor as the Arduino Uno shields, but with pinputs specific to the RP2040 and Raspberry Pi Pico.8 Ch Logic analyser Shield for use with Scoppy and MakerIOT2020 Pico Carrier BoardAll Raspberry Pi Pico pins are broken out and labelled, as well as all of the pins specific to the Scoppy App have been clearly labelled. The board are stackable onto the Pico Carrier board, via standard 2.54mm Male Headers, or extra long, stackable female 2.45mm headers, similar to those found on common Arduino shields. The use of stackable headers will allow simultaneous use of the logic analyser shield and the Analog frontend shield, introduced in part 3 of this series.In addition to that, a 2x8-way 2.54mm Male header provides access to the 8 logic converted logic analyser inputs.Logic conversion is done with a simple circuit, comprising a Bss138 N-Channel Mosfet and two 10K resistors per channel. The shield is powered directly from the Pico Carrier board, which is in turn powered from the OTG cable to the Android Phone or tablet used to display the captured data. ( see Part 1 for installation instructions and other details regarding the Scoppy Project)The logic level converters allow the use of a 5v logic signal, which is an improvement over the original design, which allowed only 3.3v inputs.The Schematic and PCB LayoutLogic analyser shield schematicSchematic_Pico-Logic-Analyser-with-Level-Shifted-Inputs_2022-11-25-1DownloadPCB LayoutSome more pictures of the deviceFront Back Assembled Front Assembled Back Logic analyser shield together with RP2040 carrier board Stacked view 1 Stacked view 2 Stacked with logic probesInstallation instructions (repeated from Part 1)Scoppy Scope InstallationAll credits for the development of the Scoppy firmware goes to fhdm-dev. This shield is a modification made by MakerIOT2020, and thus belongs to me. In the spirit of the original project, It will however be released to the public as a free open-source project ( free as in free download, free schematic, free design ).

SD2iEC & EPYX FAST LOAD CARTRIDGE V2 (TQFP) This, SD2iEC & Epyx Fast Load Cartridge V2 PCB is also available for TQFP package ATMEGA644P and ATMEGA1284, if you like, you may prefer to use TQFP package AT644P or AT1284, they are usualy cheaper and easy to find than DIP package models.Other instructions are the same with first version.https://www.pcbway.com/project/shareproject/_DIY__SD2iEC___EPYX_FAST_LOAD_CARTRIDGE_FOR_COMMODORE_64.htmlIf you want to program TQFP ATMEGA onboard then you should use DIP40 pins for ICSP connections. I used ATmeag644P and ATmega1284P compatible TQFP44 to DIP40 adapter Programmer socket, from aliexpress.comDIP40 pin 6 = MOSI DIP40 pin 7 = MISO DIP40 pin 8 = SCK DIP40 pin 9 = RST DIP40 pin 10 = VCCDIP40 pin 11 = GNDIn order to protect your electronical devices, always turn off your Commodore 64 before connecting or unconnecting any device.While transfering data (reading or writing) from SD cards it should not be interrupted like power-off or Reset systems. Otherwise that may damage SD cards.Gerber files can be changed at any time. Before paying for the PCBs, be sure to update your orders!Have funThank you.

The QuinLED-Deca, version 1 revision 7 is a 10 channel ESP32 based based PWM WiFi LED dimmer which integrates natively with Home Assistant. Some of it's unique properties are that it has 10 independent channels with high current handling and PWM frequencies up to 300.000Hz making it suitable for video work. All videos on the Intermittent Technology YouTube channel are shot using these dimmers lighting everything!Works with any analog LED strips or COB LEDs up to 50v and is able to drive 10 individual LED strips or 2x RGB+CCT strips or any other configuration you wish to make. Also provides 4 broken out GPIO pins and an onboard temperature sensor.The board uses an ESP32 module you can program yourself or run ESPhome as the software core, providing a very easy way to configure the board and Home Assistant making it easy for the people just starting out with LEDs and Home Assistant!The QuinLED-Deca has been developed from the ground-up to be an easy DIY project even for people just getting started. The total cost per board is less than 20$ and all information to build one (part lists, (YouTube) tutorials, configuration examples, etc.) can be found on https://quinled.infoQuick links:QuinLED-Deca and QuinLED-Quad usage examples with Home Assistant: https://www.youtube.com/watch?v=Sd77zavUyjMQuinLED-Deca Hardware specifications and capabilities: http://quinled.info/2018/09/08/quinled-deca/QuinLED-Deca Hardware buying guide: http://quinled.info/2019/12/19/quinled-deca-hardware-v1r7/QuinLED-Deca Soldering Guide (Video guide!): http://quinled.info/2019/01/26/quinled-deca-soldering-guide/

FDDEMU1.1 PROJECTGNU General Public License v3.0 Permissions Commercial use Modification Distribution Patent use Private use

This is a tool that could be useful for bowden or direct printers because allows you to eliminate the big amount of cables (hot end, hot end fan, hot end temp sensor, cooling fan..) with just 1 cable. This can hel to reduce weight and helps with the tool change (in 3d print the nozzle change) because all you have to do is disconnect 1 cable. easy and fast!

The weeCee is perhaps the smallest MSDOS gaming PC ever made that doesn't use emulation.It is based around an ICOP Vortex86 CPU module, which is a pentium-class x86-compatible embedded system-on-module that is intended for industrial control. However the module also works great for DOS gaming, as it includes a highly-compatible VGA graphics chip.To this I also added a Soundblaster Pro-compatible sound chip from Crystal Semiconductor, which is still available new-old-stock from utsource, and a gameport-compatible connector for using joysticks and gamepads.It can also support internal waveblaster MIDI expansions such as the Dreamblaster S2, or external MIDI sound modules like the MT32 and Sound Canvas.It also includes network support for multiplayer games, as well as a USB connector for mass storage devices.Enclosure will require a Hammond 1457J1201 case, as well as the end-plates gerbers included in the zip file below.Source files are available in Circuitmaker's cloud storage : https://circuitmaker.com/Projects/Details/rasteri/weeCee

AMIGA PS/2 MOUSE CONVERTER (ADAPTER) - PIC16F628(A)Hello,This is a tested and working circuit board .If you have a PIC16F628(A) and a PIC-Programmer, you can make your own Amiga PS/2 mouse converter adapter, with this circuit-board easily.This Amiga PS/2 Mouse Converter adapter supports; three mouse buttons, most of optical PS/2 mice and some of USB mice (supporting PS/2 communication protocols) (with a simple and cheap USB to PS/2 converter.)You need to download .HEX file and program it in to PIC16F628(A), from this link,https://archive.org/download/amiga-ps-2-mouse-pic-16-f-628/AMIGA_PS2_MOUSE_PIC16F628.zipIn order to protect your electronical devices, always turn off your Amiga before connecting or unconnecting any device.Gerber files can be changed at any time. Before paying for the PCBs, be sure to update your orders!Have funThank youPS. Gerbers updated for technical reasons 09.06.2020COMPONENTS:PIC16F628A or PIC16F628DIP18 IC SOCKETDB9F D-SUB 9 PIN FEMALE CONNECTOR - You may remove the metal cover if needed (for A600)6PIN RIGHT ANGLE PS/2 FEMALE PCB TYPE MINI DIN CONNECTOR100nf CAPACITOR

C64 EPROM PROGRAMMER (DELA EPROMMER II - REDRAWN)DELA EPROMMER II is a eprom programmer for Commodore 64This is a tested and working circuit board.This is an Easy DIY circuit board, all components are through hole, marked on the PCB, Easy to solder, Easy to make ;) This Dela Eprommer II circuit board is redrawn as original product.Dela Eprommer II was a very popular eprom programmer for commodore 64Dela Eprommer II eprom programmer works on Commodore 64 User Port.You can program 2716, 2732, 2764, 27128, 27256 eproms with 12V, 21V, 25V VPP voltages with this programmer.You can chose two different programming algorithms; fast and normal (50ms/byte). For some old eproms you can chose normal (50ms/byte) programming mode. There are also "One Byte Programming" and "eeprom erasing" functions.Always, turn your Commodre-64 power off before pluging or unpluging this eprom programmer.You can download DELA EPROMMER II software and some manuals from this link. (German Language)https://archive.org/download/eprommer-ii/EPROMMER_II.zipMany thanks to Dela Elektronik GmbH for this great C64 eprom programmer.Do not put an EPROM in the EPROMMER before Eprommer II Software started.Commodore 64 file system records 2 bytes start adress header at the beginning of the files, but PC recorded .BIN files do not have these 2 Bytes, this difference can cause problems.In order to protect your electronical devices, always turn off your Commodore 64 before connecting or unconnecting any device.Gerber files can be changed at any time. Before paying for the PCBs, be sure to update your orders!Have funThank you.COMPONENTS:2 pcs CD4040 (DIP16)7406 (DIP14)74LS373 (DIP20)7805 (TO-220)6 pcs. BC237 (TO-92)BC558 (TO-92)28 pin wide ZIF socket (DIP28)DIP20 IC socketDIP14 IC socket2 pcs. DIP16 IC socketRED LED4 pcs. 1N4002 DIODE3 pcs 1N4148 DIODE8.2V ZENER DIODE7.5V ZENER DIODE5.6V ZENER DIODE680 OHM 1/4 watt RESISTANCE2 pcs. 1K 1/4 watt RESISTANCE9 pcs. 10K 1/4 watt RESISTANCE2 pcs. 470μF 50V electrolytic capacitor470μF 35V electrolytic capacitor100μF 35V electrolytic capacitor (updated from 25V to 35V 08.12.2020)10μF 16V electrolytic capacitor805-24p 2x12pin 3.96mm Pitch CARD EDGE CONNECTOR2 pcs. screw and 4pcs nut (for 2 legs)

(DIY) SD2iEC & EPYX FAST LOAD CARTRIDGE FOR COMMODORE 64This is a tested and working project.This is an Easy DIY project, all components are through hole, marked on the PCB, Easy to solder, Easy to make ;) SD2iEC (Commodore disk drive emulator) and Epyx Fast Load Cartridge (the most popular "disk fast loader" for Commodore 64). Now they are togetger on one PCB.Actually, this PCB is a combination of two independent projects, one of them is SD2iEC (Commodore disk drive emulator) and the other is Epyx Fast Load Cartridge. They can be used separately or both together. A lot of experienced Commodore users prefer EPYX FASTLOAD, because of its high compatibility with Commodore hardware and software. While working with Commodore's original Disk Operating System, Commodore Disk drives (1541, 1571...) or disk drive emulators (SD2iEC, Pi1541...) loading is slow. Epyx Fastload Cartridge increases the loading speed remakable rate.Average Loading Speeds Comparison:Normal C64 Loading: 500 bytes per secondEpyx Fastload (SD2iEC): 8000 bytes per secondHere is; 180 blocks (45KB) loading video, from SD2iEC, with using Epyx Fastload:https://www.youtube.com/watch?v=sfkIw4P4sD0EPYX FASTLOAD CARTRIDGE also contains disk utilities and a machine code monitor for Commodore 64.https://en.wikipedia.org/wiki/Epyx_Fast_LoadYou can download Epyx Fast Load Cartridge Binary Eprom Image and user manuals from this link.https://archive.org/download/epyx-fast-load-1984-v-2-roms_202005/Epyx_FastLoad_1984_v2_ROMS.zipOriginal SD2iEC is designed by Lars PontoppidanWith SD2iEC, from an regular SD Card; you can use D64, M2I, PRG, D71, D81 and P00 ... extensions, Commodore 64 floppy disk images and program files. SD2iEC is easier to use and faster than its competitors. You can use SD Card as a huge capacity floppy or hard disk drive, you are not obligated to mount D64 disk images, you can load and save easly.You can search and find alot of information about "how to use SD2iEC" in the internet.SD2iEC Official Site is https://www.sd2iec.de/SD2iEC firmware download link: https://www.sd2iec.de/nightlies/ (Use firmware ...larsp-m1284p.bin or ...larsp-m644p.bin)MMC2IEC / SD2IEC - Evolutionen link: http://www.pitsch.de/stuff/mmc2iec/index.htm ** Before soldering SD Card Module you should place some isolation tape between PCB and SD card module. ** If you already have ATMEGA1284 or ATMEGA644 in TQFP44 package, then you have an option of using this TQFP44 to DIP40 adapter in the place of buying DIP40 package ones. Or you can order TQFP version of this PCB.** If you want to use SD2iEC unconnected to the C64 expansion port then you need to provide DC +5V power to the (+ -) pins on the PCB.In order to protect your electronical devices, always turn off your Commodore 64 before connecting or unconnecting any device.Ps. While transfering data (reading or writing) from SD cards it should not be interrupted like power-off or Reset systems. Otherwise that may damage SD cards.Gerber files can be changed at any time. Before paying for the PCBs, be sure to update your orders!Have funThank you.ATMEGA1284 or ATMEGA644 FUSE SETUPCOMPONENTS:ATMEGA1284 or ATMEGA644 (DIP40)27C512 or W27C512 or 27C64 or 27C128 or 27C256 (DIP28) 74LS07 (DIP14)DIP14 IC SOCKETDIP28 WIDE IC SOCKET (for eprom)DIP40 WIDE IC SOCKET (for ATMega)2x8 pin SD Card Module ( NOT Micro SD module ! ) (will be placed to the bottom side)RED LEDGREEN LED2 PCS. 270ohm - 1K 1/4watt RESISTANCE (value changes leds brigtness)10K 1/4watt RESISTANCE2.7K 1/4watt RESISTANCE8 Mhz Passive Quartz Crystal1N4148 DIODE2 PCS. 33pf ceramic CAPACITORS6pin MALE DIN CONNECTOR6PIN MALE HEADER1PCS. HEADER JUMPER CAP4 PCS. RIGHT ANGLE TACTILE BUTTON6 PCS. 30cm MALE-FEMALE DUPONT CABLESD CARD (4GB will be enough)3 PCS. 2PIN MALE HEADER2 PCS. 100nF ceramic CAPACITORS1 PCS. 0.47μF CAPACITORYou will need a programmer for ATMEGA and EPROMIf your programmer have capability to test IC chips, like 74LS series, then you should not forget to test them before soldering, some chips may have defect. (TL866 Minipro Programmer is able to test some of logic IC)

COMMODORE 64 SD2iEC & KERNAL CART COMBOThis is a tested and working project. I think, SD2iEC (Commodore disk drive emulator) and Kernal Cart is a very good combination. They come together to make a complete Disk Operating System for your Commodore 64. Actually, this PCB is a combination of two independent projects, one of them is SD2iEC (Commodore disk drive emulator) and the other is KernalCart (Commodore's low-level Operating System ROM in cartridge form). They can be used separately or both together. If you want to use SD2iEC unconnected to the expansion port then you need to provide DC +5V power for the (+ -) pins on the PCB.Original SD2iEC is designed by Lars PontoppidanOriginal Kernal Cart is designed by SukkoPera While working with Commodore's original kernal ROM, The SD2iEC loads slow (like speed of original old Commodore 1541 disk drive). When you use 'SD2iEC Kernal' or 'JiffyDOS * Kernal' with your SD2iEC, the loading speed increases spectacularly.Average loading speeds comparison:Original C64 kernal : 500 byte/secondJiffy DOS Kernal: 10150 byte/secondHere is; 180 blocks (45KB) loading, with DolphinDos-patched-JiffyDOS, video:https://www.youtube.com/watch?v=6asuU_cAbqs Referral for SD2iEC; I used ozayturay's schematics https://github.com/ozayturay/EagleProjects/tree/master/SD2IECSD2iEC Official Site is https://www.sd2iec.de/SD2iEC firmware download link: https://www.sd2iec.de/nightlies/(Use firmware ...larsp-m644p.bin)SD2iEC Kernal 2.2 download link: https://csdb.dk/release/?id=159050 (Thanks to Claus)MMC2IEC / SD2IEC - Evolutionen link: http://www.pitsch.de/stuff/mmc2iec/index.htm Referral for Kernal cart; I used SukkoPera / OpenC64KernalCart project and Turbo DOS V3 cartridge PCB images.https://github.com/SukkoPera/OpenC64KernalCarthttp://blog.worldofjani.com/?p=3736 If you need, you can find more information from original project's sites, and you can find many more information from internet. On this PCB v1.02, I added an enable/disable switch (headers and jumper cap) for Kernal Cart, it is between 74LS30 pin-8 and 27c512 eprom pin-22. (Disabling KernalCart is required while using SD2iEC COMBO without CPU pin28 cable connection) To make this project, you have to program ATMEGA644P TQFP-44 and 27C512 dip28The link below contains some kernal ROMs like Dolphindos, Speeddos, SD2IEC v2.2 kernal ... and a sample 27c512 eprom image for testing. You can also run DEADTEST 781220 ROM file in 27c512 eprom .https://archive.org/download/c-64-kernals_202004/C64_KERNALS.zip* KernalCart is also compatible with JiffyDOS ROM, you can buy and use JiffyDOS 64 KERNAL ROM Image http://store.go4retro.com/jiffydos-64-kernal-rom-overlay-image/ ** Before soldering Micro SD Card Module you should place some isolation tape between PCB and SD card module.Many thanks to SukkoPera, Lars Pontoppidan and Ozay Turay for their great works.In terms of device and software security; please turn your Commodore64 off before switching Kernal ROMs.In order to protect your electronical devices, always turn off your Commodore 64 before connecting or unconnecting any device.Ps. While transfering data (reading or writing) from SD cards it should not be interrupted like power-off or Reset systems. Otherwise that may damage SD cards.Gerber files can be changed at any time. Before paying for the PCBs, be sure to update your orders!Have FunThank you.COMPONENTS:ATMEGA644P TQFP-4427C512 or W27C512 DIP28 (maximum; 64KB is for 8x kernal ROM)DIP28 WIDE IC SOCKET (for eprom)74LS30 DIP14DIP14 IC SOCKET6Pin MICRO SD CARD MODULE (will be placed to the bottom side and needs isolation)RED LEDGREEN LED2 PCS. 270ohm - 1K 1/4watt RESISTANCE (value changes leds brigtness)10K 1/4watt RESISTANCE8 Mhz Passive Quartz Crystal1N4148 DIODE2 PCS. 33pf CAPACITORS6pin MALE DIN CONNECTOR6PIN MALE HEADER5 PCS. 2PIN MALE HEADER2 PCS. 3PIN MALE HEADER1PIN MALE HEADER2 PCS. HEADER JUMPER CAP3PCS. 3pin 2.54mm SPDT slide SWITCH3 PCS. 100nf CAPACITORS3 PCS. RIGHT ANGLE TACTILE BUTTON7 PCS. 30cm MALE-FEMALE DUPONT CABLEMICRO SD CARD (4GB will be enough)FUSE SETUPIf your programmer have capability to test IC chips, like 74LS series, then you should not forget to test them before soldering, some chips may have defect. (TL866 Minipro Programmer is able to test some of logic IC)

This is a multifunctional voltage and current meter with electronic potentiometer function.The screen model is FM1721625 and it should be possible to use a 12864 serial port screen compatible with ST7567.Double electronic potentiometer. It can be controlled with an encoder to output a controlled voltage of 0~6.6V to DV and DA, which can be used to replace those who use two-way precision multi-turn potentiometers.

DESCRIPTIONThis is the hardware part that accompanies the project of Magic Desk Cartridge Generator - https://bitbucket.org/zzarko/magic-desk-cartridge-generator/The PCB was designed to accomodate various types of EPROMs and their FLASH variants. The smallest EPROM you can use is 27C512 (64Kb), and the largest is 27C040 (512 Kb). There is an option to expand the board to a full 1MbThe PCB is designed so it can be used in various types of cartridge cases. It has been designed to fit the original Commodore cases and cases from the Polish companies KRADEX / MASZCZYK which are available at some retailers in Europe. It also fits in a 3D-prited case from the model available at Thingiverse. Unfortunately, we don't have all of the cartridge cases available in the market, so the design is NOT tested to fit with: Individual Computers', TFW8B and Shareware Plus' (and all other currently available) cases. Please note - the cartridge cases from KRADEX / MASZCZYK are "low profile", and you cannot use a socket for the EPROM with this type of cases!COMPONENTS1x 74LS021x 74LS2731x EPROM (from 27C512 to 27C040 or their FLASH / EEPROM variants)1x Tact Switch (6x6mm, horizontal or vertical)