A board in the raspberry pi zero format to provide a low power usage cellular device for the raspberry pi.
It is intended to be used together with the MuonPi HAT.
A u-blox SARA-G450 - a Quad Band GSM/GPRS module - is used to provide the connectivity features.
In order to stay compatible with the MuonPi HAT, the UART is not used directly, but translated to a USB port instead.
Template (PCB and interface symbol) to copy for any kind of HAT designs for Raspberry Pi B+. The PCB contains 6 layers with layer display at the lower edge. The assignment of layers is:
- top: signal, polygon connected to GND
- bottom: signal, polygon connected to GND
- layer 1: inner, signal
- layer 2: inner, polygon VCC
- layer 3: inner, polygon GND
- layer 4: inner, signal
Note: geometry tes...
This projects is a device controlled thru i2C, it has a set of instructions to control two leds, two buzzers and a combination of them.
The device uses an ATTiny85 and it connects to an RaspberryPi to send the commands.
The instruction for the device are:
- 0x00 --> Does nothing
- 0x01 --> All Buzzers ON, All LEDs OFF
- 0x10 --> Al Buzzers OFF, All LEDs ON
- 0x11 --> All Buzzers ON, All LEDs O...
This afforable Geiger Counter that works as standalone device and also can connect to other external devices (like RaspberryPi/Arduino or other GPIO devices) to send the "clicks" thru GPIO interface.
The Arduino code for the Geiger counter is available here:
- Pin D2 --> Arduino interruption
- Pin D7 --> Buzzer
- Pin D8 -->...
# Overview #
Time-to-Digital converter plug-on module (shield) for Raspberry Pi B+. The board utilizes a TDC7200 (TI) with a time resolution of ~50ps. The Start/Stop inputs to the TDC can be configured with JP2 from either external signals or coming from the RPi's GPIO5 pin in case a timing signal is present at this pin from another plug-on board on the same RPi. Start and Stop signals can be conf...
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....
This PCB allows you tu use a 74HC595 switch register an 8 TIP120 transistors.
That allows you to switch on and off 8 dc devices (up to 60V) with a microcontroller.
They can be daisy-chained to increase the nuber of DC outputs at will while using only 3 GPIO pins.
Inspired by N-O-D-E's (Not to be confused with the gaming channel) [Nano Server V2 PCB Bridge](https://n-o-d-e.net/nano_server2.html), my variant is designed to fit on Apple's 5W US Charger and now for the US IKEA Koppla USB charger with a 3D printed enclosure. The reason I designed this PCB is that Node's PCB only fits a specific charging adapter and a specific USB Type A Male plug that I believe...
USB dongle Real time clock For raspberry Pi (which does not have one)
Initializes as a USB Serial port when plugged in to any computer and times can be read and set via serial commands
Microchip XC8 Project attached below
PCB Shown is revision 3 as I have been trying to fit it into a small USB dongle enclosure, the one it seems to fit best is the USB-7201-G from Bud Industries.