Category Archives: c-rpi

Raspberry Pi Posts

Migrating Raspberry Pi Version 2 SD card to Raspberry Pi 3 Hardware Platform

My development RPI has been an RPI version 2 since version 2 was first released. Further, everything except the boot files have been moved to a USB-based hard drive to increase performance (using a procedure much like this: https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=44177) I … Continue reading

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Making a Data Only Cable For Teensy/Arduino/Nano

Been working on a complicated teensy project that is going to the other side of the state for testing. So I’ve been building a testing platform that consists of a Raspberry Pi connected to the Teensy via USB. I can … Continue reading

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Remote Monitoring and Upgrading of Arduino/Teensy via Networked Raspberry Pi

This post covers how to remotely monitor / upgrade an Arduino or other MCU behind a firewall. (Jump down to the Dec 2016 Update for Notes about the Duplicity Service that will easily and quickly allow remote access to an … Continue reading

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Using Lazarus / Free Pascal to Communicate with ESP8266

In my prior post, ESP8266/Arduino IDE: Building an LED Blink Server, I documented the creation of an LED blink server that runs on an ESP8266. Now I’m going to show how to access that ESP8266 using Lazarus. Because Lazarus can … Continue reading

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Cheap Battery Backup for Raspberry Pi or Arduino

I’ll throw this out real quick as I’m sure others are trying to do the same thing. Been working on a RPI project that is ‘mission critical’. It cannot fail because it looses power and the file system corrupts. So … Continue reading

Posted in c-arduino, c-electronics, c-rpi | Tagged | 5 Comments

Building Free Pascal / Lazarus Cross Compiler for Raspberry Pi

When the Raspberry Pi first came out, I spent several days trying to figure out how to build a cross compiler. I managed to do it, but there was an issue with writing GUI based apps (I can’t recall exactly … Continue reading

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Using Lazarus and the Adafruit PiTFT Display + TouchScreen for RaspBerry Pi

I recently purchased an Adafruit PiTFT TFT/Touchscreen for my Raspberry Pi thinking I might want to use it to monitor status of a project on which I am working. It cost $35. Not sure if I would call that reasonable … Continue reading

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Raspberry Pi Taskbar (xpanel) flashes grey for non Pi User

My recent attempts to build new RPI builds have had issues with XWindows (startx). startx works OK for the pi user; however, if I build a new user and attempt startx, the Taskbar/xpanel simply flashes gray. This occurs when I … Continue reading

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Compiling the Latest Lazarus/Free Pascal for Raspberry Pi

I have long wanted a recent version of Lazarus for Raspberry Pi. I’ve looked at recompiling it, but the exact instructions have been hard to come by. Until last week! I accidently stumbled into Tweaking4All’s blog showing exactly how to … Continue reading

Posted in c-lazarus, c-rpi | Tagged | 4 Comments

USB Dial Up Modem for Raspberry Pi

For the first time in probably 15 years, I find myself needing to use a modem. This time on a Raspberry PI. I have a few old modems in the junk bin, but they need an RS232 serial interface which … Continue reading

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