BBB based heating controller
[22 Aug 2016]
I fixed the ULN2803 package and GND on P20. Still need to investigate if there is a pull down resistor needed for Q1
Issues found during assembling the PCB:
- ULN2803 package is incorrect - it should be SOIC18. I will correct the PCB soon
- GND pin in the P20 5V/12V connector is not actually connected to GND
- The heartbeat LED is on...
Solar system power for esp8266 device like weather sensor. You need 5V 0.15W solar panel and small li-po battery for example 200mAh. Zener diode stabilizes voltage on 4.3, schottky diode give 0.15-0.2V voltage drop because 4.3V is too much for li-ion battery and prevents lekage current from battery. You can use panel also like binary(0/1) light sensor.
Keep It Simple Stupid
Not tested yet.
Extension board for Gewiss GW20220 power outlet: http://www.gewiss.com/prv/en/products/catalogue.l_ZP6000000000000001000023910100000.html
![Socket assembly][1]
![Socket assembly][2]
**Hardware features:**
1) Wi-Fi connectivity with ESP8266
2) On/Off using 10A relay
3) Power meter based
4) Led indicator/Buzzer
**Software features:**
1) Remote on/off
2) Power measurements (ac curre...
Overview:
ESP32-WROOM-32 is a powerful, generic Wi-Fi+BT+BLE MCU module that targets a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming and MP3 decoding.
At the core of this module is the ESP32-D0WDQ6 chip*. The chip embedded is designed to be scalable and adaptive. There are two CPU cores that can be individu...
uDomo es un dispositivo sencillo de domotica utilizado para el control de contactos de corriente alterna con base en microcontroladores. Esta diseñado para ser atornillado a un multicontacto de corriente alterna, al interrumpir dos de las lineas a traves de los relevadores y poder activar su funcionamiento por wifi, teniendo asi dos contactos listos para IoT y el resto de los contactos trabajaran...
This is a battery powered sensor board based on the ESP8266 (ESP-12F).
By using a TPL5111 chip the battery consumption can be reduced to about 1µA when the ESP is not enabled. When the TPL5111 chip receives 5V at it's wake up pin this will turn the ESP on by enabling the 3.3V voltage regulator. At this moment you can run any program you want. If you want to turn the ESP off again you have to drive...
A ESP-12 IoT controller for RGB LED Stripe 5-12V.
3+1 channels through MOSFET, PWM and dimming functionality.
The MOSFETs can be replaced by NPN Power transistors (input resistors are as THT parts placed, the 10k pull down's not needed.
The 4th channel is a Logic level up-converter (3.3V->5V). Driven by a 2N7002, can be replaced with BSS138 or similar. Note that it's is a very small power output...
ATTiny 25/45/85 & WS2812/PL9823 breakout board powered by an AA cell.
I also use the board lightly modified with a LDR as a firefly simulator and with a radio module as an IOT sensor.
RGB PWM controller. Uses ESP-01 to control the colour of the Leds. Uses MQTT protocol to connect to my smart home server to be controlled over the network.
**YouTube Video**: [Bitcoin Tracker](https://youtu.be/tMMky09HyKA)
**YouTube Channel**: [Jonty](https://www.youtube.com/JontyDIY)
**Full Step-by-Step Tutorial**: [Instructables](https://www.instructables.com/id/Bitcoin-Tracker-Using-a-Raspberry-Pi/)
**Instagram**: [@jontydiy](https://www.instagram.com/JontyDIY/)
Remember Bitcoin?.... the decentralized, new age currency, that was once traded at $...
Using nrf24L01 and ATmega328p to interact with various instruments and communicate the values to main server. One way only. No two way communication between server and meter.
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