Raspberry Pi Boards

2019-07-23 0 By Tim

A collection of electronic boards for hobby projects. Includes Analog to Digital converters, Servo controllers, and LED strips.

Miscellaneous Boards

Logic Level Converter, bi-directional, x10
bi-directional, x5
$10
$8
link
link
74AHCT125 level converter chip DIN
MCP23017 IO Expansion Board I2C $8link
PCF8574 PCF8574T IO Expansion Board $7link
Adafruit FT232H – General Purpose USB to GPIO+SPI+I2C$15link
PCA9685 (16 Channel 12-bit PWM) Servo Motor Driver Board$9link
PiJuice – Battery project$68link
SenseHat – Orientation, Temperature, Humidity project$38link

LED Strips.

Density: 30-per-meter versus 60-per-meter. WS2812 versus WS2801 versus WS2811. Raspberry pi only has 1 PWM output – so cannot play sounds and control the strip at the same time. Note that GPIO Pin 18 is “magical”, not “arbitrary”.

WS2812 RGB Tutorial
WS2812 NeoPixel Raspberry Pi
WS2812B NeoPixel Adafruit CircuitPython
Neopixel showing diode wiring
link
link
link
link
5050 versus 3528link
60/Meter – 1M – Alitove, WS2812B$11link
60/Meter – 5M – Chinly, WS2812B waterproof
60/Meter – 1M – Chinly, WS2812B waterproof
60/Meter – 5M .- Alitove, WS2812B waterproof
$32
$10
$35
link
link
link
30/Meter – 5M – Chinly, WS2812B$21link
Power – Alitove 5V 10A, with terminal connector
Power – Alcorol 5V 10A, with terminal connector
$20
$18
link
link
Power – Alitove Cage 5V 20A, fanless$19link
Connectors – 5050, 3Pin, 10mm$13link

LED 12V instead of 5V – $21 – link project. Uses PiGPIO – “hardware timed PWM on all GPIO 0-31. link. Next

Sensor Kit – Elegoo EL-KIT-000 37-in-1 for Arduino ($23, 2019/Jan). Amazon Link. Instructables Link.

Sensor Kit KeyStudio $50 (wiringPi library, C) Amazon Link. Manual Link.

USB-C (Preparing for Raspberry Pi 4)

USB-C to USB-A, 6 feet, “recommended”$13link
USB Type C to USB 3.0 Adapter, “recommended”$10link

LCD and OLED

OLED I2C 12864 128×64 Yellow Blue SSD1306 Driver $7link project

Random Link – UPS article