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.
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...
Extension board for Gewiss GW20220 power outlet: http://www.gewiss.com/prv/en/products/catalogue.l_ZP6000000000000001000023910100000.html
1) Wi-Fi connectivity with ESP8266
2) On/Off using 10A relay
3) Power meter based
4) Led indicator/Buzzer
1) Remote on/off
2) Power measurements (ac curre...
Just simple pcb designed for custom application with Raspberry Pi
"Raspberry pi Custom Shield" that I have shared is a pcb with custom pin gpio selection to screw block connection, two relays drived to GPIO20 and GPIO 21, an RTC to give correct data to Raspberry.
Schematic and PCB file of "USB expander" show one my solutionon to expand USB and add two serial door connection to raspberry PI.
This project presents the implementation of a water meter based on ST microcontroller STM32F103. This project allows you to take into account the resources used and transfer data to the user's phone or website via the GPRS or Bluetooth channel. It is also possible to implement Bluetooth data exchange between the device and the user's smartphone and using the LoRa network for integration into the s...
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...
Preliminary edition of the hardware platform for Ethernet connected IoT devices with configurable additional ESD protection. Has 40 pin application interface. Based on STMicroelectronics STM32F405RGT6 microcontroller and Microchip ENC28J60 IEEE 802.3 controller.
Order the design to me.
**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/)
Remember Bitcoin?.... the decentralized, new age currency, that was once traded at $...