A simple shield for controlling 14 stepper motors.

Macintosh Classic II FPU cardThis project is about an expansion card that adds an MC68882 FPU to your Macintosh Classic II. The board has two layers to keep the PCB cost down. It offers a switchable clock source between the system clock (16 MHz, synchronous operation) and a crystal oscillator on the board (40 MHz, asynchronous operation; tested with MC68882FN40A, the rumours claim 50 MHz will work too).ResultsAfter plugging in the card, it should be immediately visible in some tools (here System Information of MacBench): The board dramatically improves the Floating Point performance of the computer. MacBench 1.0 with an FPU@16 MHz (system clock) reports over a 13x improvement. When using an external 40 MHz oscillator, the Floating Point result goes up even a bit more - to 15.7x (it's not proportional to the clock frequency as at some point the slow 16-bit bus becomes a limiting factor):(look at the Floating Point row)ReferencesThe MC68000 KiCAD library from https://dev.sigpipe.me/DashieElectronics/Jackalope

This is the MCU board which can drive one motor and one LED ring plus a satellite board with ring.The MCU boards are connected through a RS-485 link and powered by 5V.For full project you need:1 master board: https://www.pcbway.com/project/shareproject/MetaClockClock_Master_tinyK22.html1 tinyK22: https://www.pcbway.com/project/shareproject/TinyK22_V1_3.htmlMultiple MCU boards: https://www.pcbway.com/project/shareproject/MetaClockClock_MCU_Board.htmlMultiple Motor Boards: https://www.pcbway.com/project/shareproject/MetaClockClock_Motor_Board__Satellite_.htmlMultiple LED Ring boards: https://www.pcbway.com/project/shareproject/MetaClockClock_LED_Ring.htmlHow the full project could look like, seehttps://mcuoneclipse.com/2021/01/01/metaclockclock-v4-for-the-year-2021/https://mcuoneclipse.com/2020/12/26/new-metaclockclock-v3-finished-with-60-clocks/https://mcuoneclipse.com/2020/06/07/behind-the-canvas-making-of-60-billion-lights/https://mcuoneclipse.com/2020/05/24/60-billion-lights-2400-rgb-leds-and-120-stepper-motors-hiding-behind-canvas-art/

This is an optional LED ring (but highly recommended) to build a MetaClockClock: a matrix of analog clocks to display information or show interesting animation patterns.For full project you need:1 master board: https://www.pcbway.com/project/shareproject/MetaClockClock_Master_tinyK22.html1 tinyK22: https://www.pcbway.com/project/shareproject/TinyK22_V1_3.htmlMultiple MCU boards: https://www.pcbway.com/project/shareproject/MetaClockClock_MCU_Board.htmlMultiple Motor Boards: https://www.pcbway.com/project/shareproject/MetaClockClock_Motor_Board__Satellite_.htmlMultiple LED Ring boards: https://www.pcbway.com/project/shareproject/MetaClockClock_LED_Ring.htmlHow the full project could look like, seehttps://mcuoneclipse.com/2021/01/01/metaclockclock-v4-for-the-year-2021/https://mcuoneclipse.com/2020/12/26/new-metaclockclock-v3-finished-with-60-clocks/https://mcuoneclipse.com/2020/06/07/behind-the-canvas-making-of-60-billion-lights/https://mcuoneclipse.com/2020/05/24/60-billion-lights-2400-rgb-leds-and-120-stepper-motors-hiding-behind-canvas-art/

This is an optional motor/satellite PCB to build a MetaClockClock: a wall of analog clocks to display information or show interesting patterns. This motor board only works in combination with the base clock board.For full project you need:1 master board: https://www.pcbway.com/project/shareproject/MetaClockClock_Master_tinyK22.html1 tinyK22: https://www.pcbway.com/project/shareproject/TinyK22_V1_3.htmlMultiple MCU boards: https://www.pcbway.com/project/shareproject/MetaClockClock_MCU_Board.htmlMultiple Motor Boards: https://www.pcbway.com/project/shareproject/MetaClockClock_Motor_Board__Satellite_.htmlMultiple LED Ring boards: https://www.pcbway.com/project/shareproject/MetaClockClock_LED_Ring.htmlHow the full project could look like, seehttps://mcuoneclipse.com/2021/01/01/metaclockclock-v4-for-the-year-2021/https://mcuoneclipse.com/2020/12/26/new-metaclockclock-v3-finished-with-60-clocks/https://mcuoneclipse.com/2020/06/07/behind-the-canvas-making-of-60-billion-lights/https://mcuoneclipse.com/2020/05/24/60-billion-lights-2400-rgb-leds-and-120-stepper-motors-hiding-behind-canvas-art/

This is a master controller board to control many 'clocks' over RS-485 to build a 'MetaClockClock': many analog clocks build a wall of clocks to show information or interesting animation patterns.You can see how this looks in the following articles:https://mcuoneclipse.com/2021/01/01/metaclockclock-v4-for-the-year-2021/https://mcuoneclipse.com/2020/12/26/new-metaclockclock-v3-finished-with-60-clocks/https://mcuoneclipse.com/2020/06/07/behind-the-canvas-making-of-60-billion-lights/https://mcuoneclipse.com/2020/05/24/60-billion-lights-2400-rgb-leds-and-120-stepper-motors-hiding-behind-canvas-art/The board has the following features:6 WS2812B RBG LED LanesRealtime ClockTemperature/Humidity sensortinyK22 socketRS-485 interface5V power supply input and output (pass-through)Optional sockets for BLE (Adafruit SPI friend), ambient light sensor or ESP32For full project you need:1 master board: https://www.pcbway.com/project/shareproject/MetaClockClock_Master_tinyK22.html1 tinyK22: https://www.pcbway.com/project/shareproject/TinyK22_V1_3.htmlMultiple MCU boards: https://www.pcbway.com/project/shareproject/MetaClockClock_MCU_Board.htmlMultiple Motor Boards: https://www.pcbway.com/project/shareproject/MetaClockClock_Motor_Board__Satellite_.htmlMultiple LED Ring boards: https://www.pcbway.com/project/shareproject/MetaClockClock_LED_Ring.htmlHow the full project could look like, seehttps://mcuoneclipse.com/2021/01/01/metaclockclock-v4-for-the-year-2021/https://mcuoneclipse.com/2020/12/26/new-metaclockclock-v3-finished-with-60-clocks/https://mcuoneclipse.com/2020/06/07/behind-the-canvas-making-of-60-billion-lights/https://mcuoneclipse.com/2020/05/24/60-billion-lights-2400-rgb-leds-and-120-stepper-motors-hiding-behind-canvas-art/

Wifi and internet access using the Wemos d1 mini (esp8266). I recommend the LOLIN Wemos d1 Mini. These parts can all be purchased on Aliexpress at usually very low cost including shipping.The project can also be used for analog to digital conversion, pwm on leds, i2c sensors as standalone projects.An onboard power supply means a 6 - 30V DC external power supply can be attached for standalone projects.I use this board for remote weather station projects via the Blynk app on cell phones.Board makes prototyping projects really quick and easy and without the errors and damage that can occur with jumper wires.CAUTION: The Wemos d1 Mini i/o pins work on 3.3V. Do not connect 5v to any of the i/o pins as damage will occur.Some temperature sensors may not work reliably with 3.3v. Additional photo shows a temperature sensor plugged into the underside of the board. Reason for this is to remove temperature heating effects from the other board components. The board will accept several temperature sensors, for instance, GY21, AHT10, BME280. Example code is available on the relevant Arduino libraries.The pcb board is marked with the i/o description. Also the gnd and voltage pins.To make this project requires some soldering skill. The pcb is lead free.

TinyK22 Board with NXP K22FN512 ARM Cortex-M4FThe fabrication files for the assembly service can be found here: https://github.com/ErichStyger/mcuoneclipse/tree/master/tinyK22/V1.3/FabPlease use this settings when ordering the pcb and for the assembly check this.https://github.com/ErichStyger/mcuoneclipse/tree/master/tinyK22/V1.3/Fab

Originally reengineered from Tesla by Damien Maguire.We are using a different CAN design with more feature and a EPS-32mini as a SOC.https://evbmw.com/index.php/evbmw-webshop/tesla-boards/tesla-gen-2-charger-logic-board-fully-built-and-tested

This board is intended to be used for ESPHome. It allows you to have multiple climate sensors (Gas resistance, humidity, pressure, temperature) as well as IR TX and RX to control IR controlled devices you have in the room. Personally I use it to turn on and off my projector whenever I want to watch a movie but use it for whatever you want.After initially flashing it just update it OTA and you never have to care about hooking it up using the pin header again, however it needs to be done the first time. The reason is to keep costs and the impact on the environment low for parts that never really get used anyways.See details here: https://github.com/tttttx2/ESPHome_IR_bme680

The french preservation groups MO5, La Ludothèque Francaise and the Game Preservation Society are proud to announce a new open source preservation tool, Pauline.It’s made by Jean-Francois Del Nero, already known for the HxC FDE.The device can detect the kind of Floppy drive it’s attached to, try to repair faulty sectors of a floppy and make a backup of it! It can also act as a regular FDE.On the software side, the set of tools written for Pauline is called Ludo. It’s also open source and available for Linux and Windows.

In this project I needed a fan controller. But I didn't want to do this with just any components but with as many as possible that I already had at home. So it came to that I control 4 fans with 4 Power Mosfets. The reason for this project is, that I can control the fans by the temperature. So I can let the fans run as quiet as possible and if it needs more power because of the temperature I can run them faster.With this PCB I also wanted to find out how small it can be and how good it looks with the Silkscreen. On the pictures you can see that the font is very well readable and even the logo looks very well! ^^

A simple extreme feedback device (XFD) based on an ESP8266 microcontroller and one or multiple WS2812 Neopixels, providing an HTTP GET interface over WiFi to set the colors of the LEDs. The device is intended to be integrated into a CI/CD or monitoring system providing a simple visual representation of the current status of the system.Usage details and source code for flashing the ESP and the PCB is published on the github project repository.

A simple extreme feedback device (XFD) based on an ESP8266 microcontroller and one or multiple WS2812 Neopixels, providing an HTTP GET interface over WiFi to set the colors of the LEDs. The device is intended to be integrated into a CI/CD or monitoring system providing a simple visual representation of the current status of the system.Usage details and source code for flashing the ESP and the PCB is published on the github project repository.

This PCB is a usefull tool to make the Smartphone-Radiation visible. the LED lights up, if something is sent on a 2GHz frequency. If it lights very bright, there is a strong Radiation. if it only lights a litlebit or blinks, there is not so much of Radiation.U1 = LM258DQ1 = BC848D1 = LED Red 1206C1 = 1uF 1206C2 = 1uF 1206C3 = 100uf 1206R1 = 100k 1206R2 = 220k 1206R3 = 1.6M - 2.5M 1206 (Sensitivity of your Detector)R4 = 1k 1206

The 10 LEDs on the top line will give you the units betweem 0 and 9 and the five on the bottom line will give you the dozen between 0 and 4.