The [MuonPi Project](http://muonpi.org) utilizes an inexpensive Raspberry Pi B+ plug-on module for particle and nuclear physics detectors aimed for measuring muons from atmospheric showers triggered by high energetic cosmic particles. The goal is to set up a distributed network of these detector stations in order to determine the energy, timing, and eventually the origin of the primary particles....
# 1. Overview #
TinyUPS is a simple 5V/2.5A uninterruptible power supply with a li-ion battery as a buffer, a load sharing power path management system and an ATtiny13 for monitoring power supply and battery charge level as well as for communication with the connected device.
Touch sensor using AT42QT1010 with power led indication.
For power led indication, use in conjunction with Delay Timer connected to GPIO14 (https://easyeda.com/lynxlabeling/delaytimer).
Note: this circuit is connected to an N-channel Fet, which pulls GPIO3 pin low when activated. Add 'dtoverlay=gpio-shutdown' to /boot/config.txt file to use. For info, see:
- Add LED power indicator - https://ho...
there is major issue with raspberry pi when it's running and the power is cut
the sd card get dammaged also OS, so it will no be able to run again
and also safe shut down need about 10 second to shut down proprely
The second version of the Cross-board for Raspberry Pi B +, 2, 3.
1. 8 digital inputs with opto-coupler;
2. 8 outputs with solid-state relays;
3. Communication interface RS485;
4. Real-time clock;
5. Conclusions of 1-Ware interfaces (with 3.3 volt power supply), I2C (with 3.3 and 5 volt power supply and matched levels);
6. Terminals for connection of temperature and humidity senso...
This is a very basic PCB to put a Raspberry Pi Zero into an old sinclair spectrum 48k case...
Code is by a Mr P J Evans and is called ZX Scanner on Github, I've basically made a PCB of his work and added my own hardware parts!
There's a footprint for an RTC this will use generic Pi RTC code
There's a footprint for an Adafruit I2S amplifier board...i've only put this in for those that want to run...
This is a Raspberry Pi Zero W hat/shield with USB MIDI input, stereo audio output, 3 user-configurable buttons and OLED display.
To use as an audio card, enable PWM audio output by adding `dtoverlay=pwm-2chan,pin=18,func=2,pin2=13,func2=4` at the end of *config.txt* file.
Remeber that HDMI audio output is the default; use `raspi-config` to force output to 3.5mm audio jack.
If you can't find 47uF...
R-Pi based intercom
Bi directionnal sound video return
IP or 3/4G based (with 3G or 4G hat)
In this version use an audio hat and external speakers and mic for communication.
Add a PI camera with or without infra-red vision to have a visiophone.
Use Jitsi, Wazo or other services to communicate with you devices (phone app, computer app ...) and a pyton script to adress the corect perso...