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 -->...
Template (PCB and interface symbol) to copy for any kind of shield 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
A design to break out the dual micro HDMI ports out to a panel adjacent to the USB/Ethernet ports.
All traces are length matched on high speed differential signals.
This design has not been tested yet, it is currently in production (04/2020)
This has been deisgned to use the BossCon HDD-M-CN09 micro HDMI board edge connectors. Other types will not fit as they all have slightly varying pin spac...
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...
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.
# Shield fo Raspberry PI zero W. #
# Introduction #
This shield created for moving many digital servos as [LOBOT LX-16A or LOBOT LX15D](www.lobot-robot.com).
# Desing #
This shield included microcontroller stm32f413 and st-link scheme on stm32f103 base. Stm32f413 connected to raspberry connector via SPI, UART and I2C interfaces. You can to use stm32f413 as:
- USB/UART bridge for raspberry cons...
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 by jumpers from either external signals or coming from one GPIO in case a timing signal is present at this pin from another plug-on board on the same RPi.
The design is finalized. PCBs were produced, mounted an...
Raspberry Pi B+ plug-on module for particle and nuclear physics detectors. The circuit comprises two inputs for typical input signals (PMTs, SiPMs etc.) with typically negative pulses of few hundreds of mV amplitude. Each channel comprises adjustable threshold discriminators for fast timing and a peak detector (only ch1) for amplitude measurement with a slow sampling ADC. Timestamping of the singl...
This schematic has a few functions to this circuit. This circuit takes voltages starting from 4V to a max. of 13V. It was an open source project I found online. I've redone this board's schematic. But when it came to de PCB design I kinda lost it. I got as close to sorting the components on the board, but I didn't know where to start connecting wires or how. I'm taking a little break, but if anyon...
# DC to DC power #
With following functionalities:
- Power a Raspberry PI with 2S-6S accumulator
- Fixations for a FPV emitter.
- Connexions from Raspberry-PI to FPV emitter
- Can also power a radio control receiver with several servos.
HAT or pHAT for Raspberry Pi. Designed with the Pi Zero W in mind, so it shares the footprint of the Zero.
HAT has an ATmega328PB connected via I2C, SPI and UART,allowing both flashing, and many forms of communication.
Included a space for a Mini DC-DC voltage regulator. These are good for 3A of power, but make sure to solder the 5V pads and cut the ADJ pad lead.
Headers for SPI(ICSP) and both...
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...
Raspberry Pi Zero hat/shield with MIDI input, stereo audio output, 3 buttons and OLED display.
OBSOLETE: this version is obsolete. Check new version without the MIDI port, but with improved audio and cleaner schematic https://easyeda.com/account/project?project=2bca68b51d954e19b68cba485984fb42