spoiler for 1/10 rc car

yokomo yd2 steering angle with servo up

police led with timer 555 and you can change the frequency of the leds if you change the resistor 1 and 2

blink of the 10 leds with the 555 timer and the 4017 chip

cuore led with timer 555

This project aims to create a Pan/Tilt/Zoom/Focus camera control that can control multiple cameras using a single gamepad.

All project data can be found under the following link : https://www.instructables.com/Joule-Thief-Power-Bank/https://www.instructables.com/Joule-Thief-Power-Bank/Hundred millions of electric batteries are thrown away each day because their voltage is not enough to be used. Although with lower voltage, these batteries still contain a lot of energy. In this way millions joules remain unused and are forever lost. The idea of the presented in this instructable device is to try to extract as much as possible energy of these batteries and to help in this way keeping our planet alive.The principle of work of this device called further Joule thief power bank (JTPB) is based on the parallel work of multiple Joule thieves. The reason to use this approach is the following : There a lot of different step up DC/DC converter on the market, but all which I found work with voltages over 0.8V. Some of the Joule thieves (JT) I made was able to work at voltage close to 0.2V. As reference design for the Joule thief I used this site.My primary idea was to force multiple JT to work in parallel. As beginning I created a PCB supporting 6 JT's.Their output voltage should be applied to the input of step down 5V converter, which could supply or charge some external device. It also should supply an Arduino used to measure the battery voltage and to display it on some screen. I chose to use small OLED display because of the low consumption. During the design different weak points in the planed approach appeared and solved them in different ways. Keep reading to learn more :-)

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