#raspberry-pi + #electronics

Public notes from activescott tagged with both #raspberry-pi and #electronics

Thursday, July 30, 2026

Is this not the cutest, little display for the Raspberry Pi? It features a 3.5" display with 480x320 16-bit color pixels and a resistive touch overlay so is slightly larger than our popular original. The plate uses the high speed SPI interface on the Pi and can use the mini display as a console, X window port, displaying images or video etc. Best of all it plugs right in on top!

This PiTFT 3.5" is designed to fit nicely onto the original Pi 1 Model A or B but also works OK with the Raspberry Pi Zero, 4, 3, 2 Model B or Pi Model A+ or B+ as long as you don't mind the PCB overhangs the USB ports by 5mm.

Uses the hardware SPI pins (SCK, MOSI, MISO, CE0, CE1) as well as GPIO #25 and #24. GPIO #18 can be used to PWM dim the backlight if you like. All other GPIO are unused. There's a 2x13 header on the bottom, you can connect a standard Pi GPIO cable to it to use any of the other pins ask you like.

Best of all, it comes fully assembled and ready to plug into your Pi! You can use this as a display for running the X interface, or pygame. You can also have an HDMI display seperately connected. There's four mounting ears that can be used to attach the display & Pi to a bezel, or snap them off with pliers (they're perforated) for a slick exactly-the-same-size-as-a-Pi look.

Monday, July 27, 2026

Automated provisioning of secure boot and encryption for Raspberry Pi devices

What Problem Does This Solve?

Imagine you need to prepare 100 Raspberry Pi devices for your business.

Each device needs:

  • A secure boot system (so only your software can run on it)

  • Encrypted storage (so your data is protected)

  • Your custom operating system installed

  • Security keys programmed correctly

Without this tool, preparing each device manually is time-consuming and error-prone. Each command must be executed precisely. A single mistake requires restarting the entire process.

This tool automates the entire provisioning workflow. Connect a device, and the tool handles all configuration steps automatically. Typical provisioning time is approximately 3 minutes per device (for a 2.6GB OS image).

Thursday, July 16, 2026

This X1200-c1 case is designed for the raspberry pi 5 X1201 ups shield only, it can fully accommodate the X1201 and the Raspberry Pi 5, with space reserved on the top for mounting the Raspberry Pi 5 Pip boards, such as the X1001, X1000, X1004, X1003 and M901 etc.

Note: Due to the height limitations of the housing, although the X1201 also supports external switch, but no holes of 12 mm in diameter have been provided for the mounting of an external momentary switch.