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for E46 E39 E36m54b30 big throttle body to m50 intake manifold adapter!Works excellent has been tested, ideal for turbo application.Ask me for more details, and other BMW tuning parts!!!
BMW M54 electric throttle to M50 intake manifold Adapter tested

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Kiss Ferenc

HUNGARY

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Kiss Ferenc
I am using this board to pre-select power supply for me garden layout. I primarily use Marklin Digital, but sometimes I also have guest trains running on DC power, also external digital station. One of the 5 inputs will be reouted to the output connection. I have created this board so safely switch up to 10A power to the rails. The rotary selector switches I was able to find in the shops were all rated just for 1-2A.Please noteI run this board from 12V, but if you pick different relays you can use lower voltage as well. In that case you need to check the resistorsThere is no polarity protection on the supply input terminal, please double check your connectionsIn the schematics, I included 2.2K resistor for the LED, but actually for the LED I picked (random LED from my parts bin), I ended up using a 5K resistor.BOMIC4017 decade counter IC, optional IC socket6pcs 10k resistor5pcs 5k resistor: you may need to pick different values depending on your LED type.5pcs 5mm LED (I used a generic high power white LED)5pcs 1N4004 diode5pcs BD547 transistor7pcs double 5.08mm pitch screw terminalsGeneric push button100nF ceramic capacitor5pcs AZ733W-2A-12DE (12V relay, switching current 10A)
Input Selector

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Csongor Varga

HUNGARY

9

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Csongor Varga
I built this board so I can assemble various ESP8266 based sensors using easily available breakout boards.I designed this board to support the following sensors. Check the schematics for the pinout.I2C:BME680: temperature, humidity, pressure, VOCBH1750: ambient lightSH21: temperature, humidityand of course any other I2C sensor that have the same pinout as one of the 3 above1-wire:DHT11/DHT22: temperature and humidity with the 4.7k resistorDS18B20 temperature probes with the 4.7k resistorOthers:Current clamp for power consumption measurement, also the requited 2 x 10k resistor and 10uF capacitorRCWL-0516: radar motion sensor4 Relay relay boardHeader to access all ESP GPIO pinsYou need a Wemos D1 mini as the ESP microcontroller board, and the sensors mentioned above that is available in many different places. Some of the more exotic parts:RCWL-0516 microwave motion sensor: https://www.aliexpress.com/item/32948027705.htmlSCT-013-000 YHDC 30A current clamp: https://www.aliexpress.com/item/32708887594.htmlPowering this boardThere are 3 different ways this board can be powered:1) Mains powerUse a screw terminal on the top and a Hi-Link HLK PM01 (https://www.aliexpress.com/item/32408565688.html) 5V power supply. There is also a footprint for a varistor to clamp high voltage transients (pick a part suitable for your mains power), and also a regular fuse holder. I am using 100mA slow blow fuse there. If you don't want to use a fuse, bridge the terminals with a wire.2) 5VUse the H3 terminal to supply the board with 5V. Note the correct polarity, there is no polarity protection in the board.3) DC powerUse the H4 terminals to supply 6-24V DC. Note the correct polarity, there is no polarity protection in the board. Also populate the footprint for the small buck converter (https://www.aliexpress.com/item/4000076471931.html) to transform the 6-24V to 5V.Firmware and TutorialsMy intro to this board can be seen in this video: https://youtu.be/WzjfJQtedCAI am planning to release more videos on how to build sensors and build a firmware using ESPHome.
Home Sensor Board

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Csongor Varga

HUNGARY

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Csongor Varga
Tiny USB board for blocking 5V power over USB. Designed specifically for 3D Printers used with OctoPrint.With this tiny board you can prevent your 3D Printer to be powered from OctoPrint/PC over USB. Data connection pins and GND are still connected!
3D Printer USB Power Blocker

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HomeKid

HUNGARY

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HomeKid
Not all people know about that Creality 1.1.X boards have other accessible IO port, not just the commonly used Pin27. This tiny board can expose Pin29 for adding more features. You need to unsolder the factory 16V 100uF capacitor and re-solder it to the new board. The exposed V pin is 5V!It has a JST 3P connector, the same one that any Filament Runout sensor uses.Crosslink explains it very well:?
Creality Ender 2 3 5 Pin 29 expansion board

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HomeKid

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HomeKid
This project is created for my Wifi LokRemote project (https://github.com/nygma2004/Wifi_LokRemote) so I can control my locos using a physical control as opposed to a mobile phone. This project contains a ESP32 Wifi microcontroller which is communicating with the Wifi LokRemote over wifi sending direction, speed, light and sound commands over UDP messages.I have done all the documentation for this project on my GitHub page: https://github.com/nygma2004/Wifi_ThrottleYou find the 3D printed case, the arduino code, schematic and the BOM there.
Wifi Throttle

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Csongor Varga

HUNGARY

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Csongor Varga
ESP8266 based IR receiver and transmitter with temperature sensor and USB Type-C! Designed for controlling Aircons via IR.It uses high power (100mA+) 3mm IR LEDsParts needed:ESP8285-M2 https://s.click.aliexpress.com/e/_ACJtE5TSOP4838 https://s.click.aliexpress.com/e/_9fOGkVTSAL6400 https://s.click.aliexpress.com/e/_A58wgHDS18B20 https://s.click.aliexpress.com/e/_9IIWdRAMS1117-3.3 SOT89 https://s.click.aliexpress.com/e/_9uf2AtBSS138 SOT23 https://s.click.aliexpress.com/e/_Admg73USB Type-C 6P https://s.click.aliexpress.com/e/_A0JKIaUSB Type-C Cable https://s.click.aliexpress.com/e/_9hcSzf2*4*3.5mm SMD button https://s.click.aliexpress.com/e/_AamunF0603 resistors https://s.click.aliexpress.com/e/_9fCXRR0603 capacitors https://s.click.aliexpress.com/e/_APjiSp0603 8P resistor arrays https://s.click.aliexpress.com/e/_9I7p7X0603 LED https://s.click.aliexpress.com/e/_AnUhU1https://s.click.aliexpress.com/e/_ACJtE5
ESP8266 IR Remote AC controller v1.3.1

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HomeKid

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HomeKid
"Fake" Elgato Eve Room (2020) Apple HomeKit compatible temperature, humidity and air quality sensor using SHT3x, IAQ Core-C and OLED ScreenFeatures:Temperature Sensor accessoryHumidity Sensor accessoryAir Quailty Sensor accessoryVOC Density and CO2 densityOLED screen with Air Quality starsSwitching Temperature Display Units between Celsius and Fahrenheit (requires Eve app)Downloadable User Manual (requires Eve app)Reset buttonPart Links:ESP12F/E SHT3x Sensor1.3” SSD1306 OLED displaySMD 0805 resistors SMD 0805 capacitorsAMS1117-3.34.5x4.5 buttonUSB Type-C2.54mm 90 degree female header2.54mm header (optional) http://s.click.aliexpress.com/e/uTY0Z6C
Eve Room Apple HomeKit Temperature/Humidity/Air Quality Sensor USB Type-C

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HomeKid

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HomeKid
PMSx003 I2C bus adapterFunctions:converts PMS1003, PMS3003, PMS5003, PMS7003, PMSA003 from UART to I2C bus communicationTwo I2C bus addresses3.3V operating temperatureBoost converter to power the PMS from 3.3VRevisions:v1.0.0 - first releasev1.0.1 - added ICSP Pins for flashing the bootloaderParts list:Atmega328P https://s.click.aliexpress.com/e/_AM3QO5SMD 0805 capacitors https://s.click.aliexpress.com/e/_9QWm9vNCP1402 https://s.click.aliexpress.com/e/_AeZ9Iv0603 Resistor array 10K https://s.click.aliexpress.com/e/_AKC0rJ1N5819 SOD123 diode https://s.click.aliexpress.com/e/_AU6ZdRSMD 0805 induxto 47uH https://s.click.aliexpress.com/e/_A8ClBTCSTCE8M smd3212 8mhz crystal https://s.click.aliexpress.com/e/_Ao98D31.25mm smd 8p connector https://s.click.aliexpress.com/e/_Apegwz2x5p 1.27mm smd female connector https://s.click.aliexpress.com/e/_9v8aIzhttps://s.click.aliexpress.com/e/_AM3QO5
PMSx003 I2C Bus adapter board

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HomeKid

HUNGARY

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HomeKid
Very simple but powerful Wi-Fi add-on PCB for the all new Raspberry Pi Pico using only a few components, an ESP-M2 MCU via serial connection with all the ESP's pins exposed also! ESP8285 can be flashed via the PCB's exposed pins when its not connected to the Pico, onboard PROG button can be used for entering boot-mode on ESP! It has voltage divider resistors, ADC can be used from 0-3.3V, an LED is connected to GPIO2 by default!Raspberry Pico connections:GP16 (Pico UART0 TX) - ESP8285 RXGP17 (Pico UART0 RX) - ESP8285 TX
Raspberry Pi Pico Wi-Fi HAT

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HomeKid

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HomeKid
Very simple but powerful IR Blaster PCB for the all new Raspberry Pi Pico using only a few components, high power IR LEDs and IR receiver.IR LEDs are fed from VBUS ( USB port's power rail ), each LED can draw up to 100mA so higher amperage power supply is recommended.IR Receiver is a TSOP38238 which also has very good performance and for measuring temperature - not just using the Pico's built-in one - theres a widely used Dallas DS18B20 sensor.Connections:GP4 - Dallas DS18B20 sensorGP5 - TSOP38238 IR ReceiverGP6 - IR Blaster output pinParts needed:DS18B20 temperature sensor https://s.click.aliexpress.com/e/_99V0PITSAL6400 5mm IR leds https://s.click.aliexpress.com/e/_A1FAAKTSOP38238 IR receiver https://s.click.aliexpress.com/e/_A8gmhKhttps://s.click.aliexpress.com/e/_A8gmhK
Raspberry Pi Pico IR Blaster HAT

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HomeKid

HUNGARY

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HomeKid
This project is a wifi controller for large scale garden railway locomotives. It uses a ESP32 microcontroller to generate a webpage so you can control your loco on from your smartphone, or tablet. This provides and cheaper entry into battery control by not having to purchase a separate transmitter. And of course you are welcome to modify the code for your own scenario.A more complete documentation of this project is on my GitHub page with the source code.Please check the Arduino Sketch for the ESP code: https://github.com/nygma2004/locoremoteAlso have a look at my prototype video where I talk about the features of this controller: https://youtu.be/NFEwV57PYEw
ESP32 Wifi LocoRemote

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Csongor Varga

HUNGARY

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Csongor Varga
ESP8266 based IR receiver and transmitter with temperature sensor, OLED support and USB Type-C! Designed for controlling Aircons via IR.It uses high power (100mA+) 3mm IR LEDs, the OLED screen was changed to the most common GND-VCC-SCL-SDA pinout! :-) Parts:DS18B20 temperature sensor https://s.click.aliexpress.com/e/_99V0PIVSLB3940 3mm IR leds https://s.click.aliexpress.com/e/_AWfhgrTSOP4838 IR receiver https://s.click.aliexpress.com/e/_AdjYIr 0.96" OLED display https://s.click.aliexpress.com/e/_AUVz91USB Type-C https://s.click.aliexpress.com/e/_A0JKIaAMS1117-3.3 SOT-89 https://s.click.aliexpress.com/e/_ADO3w7BSS138 SOT-23 https://s.click.aliexpress.com/e/_A1pCSn0603 resistor array (5.1K, 33R) https://s.click.aliexpress.com/e/_AtcQuL2x4x3.5mm smd button https://s.click.aliexpress.com/e/_9w4Ct5
ESP8266 IR Remote AC controller v1.2.0

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HomeKid

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HomeKid
"Fake" Elgato Eve Weather (2021) Apple HomeKit compatible temperature, pressure, humidity sensor using BME280 and OLED ScreenPick and Place file for odering: https://github.com/HomeKidd/ESP8266-HomeKit-New-Eve-Weather/raw/main/images/PickAndPlace_HomeKid_Weather_v1.0.0_2021-04-08.csvFeatures:Temperature Sensor accessoryHumidity Sensor accessoryBarometric Sensor accessory (requires Eve app)Characteristic for detecting your altitude (used for proper barometric calculation, requires Eve app)12 hour Weather Forecast (requires Eve app)OLED screen with weather iconsSwitching Temperature Display Units between Celsius and Fahrenheit (requires Eve app)Downloadable User Manual (requires Eve app)Reset buttonPart Links:ESP12F/E (Bosch BME280 I2C bus sensor1.3” SSD1306 OLED displaySMD 0805 resistors (10K, 5.1K)SMD 0805 capacitors (10uF, 100nF)AMS1117-3.34.5x4.5 buttonUSB Type-C2.54mm 90 degree female header2.54mm header (optional)
Eve Weather Apple HomeKit Temperature/Humidity/Pressure Sensor USB Type-C

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HomeKid

HUNGARY

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HomeKid
ESP8266 based IR receiver and transmitter with temperature sensor, OLED support and USB Type-C! Designed for controlling Aircons via IRFeatures:DS18B20 temperature sensor https://s.click.aliexpress.com/e/_99V0PITSAL6400 5mm IR leds https://s.click.aliexpress.com/e/_A1FAAKTSOP38238 IR receiver https://s.click.aliexpress.com/e/_A8gmhK 1.3" OLED display support https://s.click.aliexpress.com/e/_9RbYd2USB Type-C https://s.click.aliexpress.com/e/_A0JKIa
ESP8266 IR Remote AC controller

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HomeKid

HUNGARY

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HomeKid
This ESP8266 sketch communicates with a Wiegand RFID reader and keypad. Ket features:Connect ot local MQTT serverSend RFID codes over to MQTTCollect keypad presses and until # is pressed and send as a pin code over MQTTBlock RFID readings and pin code entries too close to each otherNeopixel LED provides visual feedback which is controller over MQTTRead ibutton keycards using a ibutton (one wire) readerUse A0 input as a digital input (e.g. state of the gate, garage door)4 relay outputs to control gates, garage doors, lights, etc.Please follow this project on my GitHub where you can find the Arduino sketch, Node-Red flow and also the BOM.
RFID, iButton MQTT Access Control

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Csongor Varga

HUNGARY

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Csongor Varga

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