Low Power Raspberry Pi Solutions
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Raspberry Pi
Sleepy Pi 2 – Micro USB B
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Raspberry Pi
Sleepy Pi 2 – USB-C
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Kits
Sleepy Pi External Programming Adapter / Serial Console Cable
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Latest From The Blog
Updates April 2022
Greetings loyal readers! A quick update on “stuff” in and around Planet Spell Foundry. The main issue to talk about is the recent Global Component Shortages which seem to have affected the whole world for much of the last year. From a lack of new cars to limited availability of graphics cards, anyone making anything
Raspberry Pi Rainbow Screen Of Death: How To Stack Multiple HATS And Avoid Disaster
The “Rainbow Screen of Death” aka “Rainbow screen at boot” is that dreaded Rainbow screen that appears and doesn’t disappear when you boot up your Raspberry Pi. It gets stuck on the Rainbow. Its arrival is never a good sign. Whilst there is a multitude of reasons for this to happen: Like outdated firmware on
Reliable Embedded Systems: Recovering Arduino i2c Bus Lock-ups
It’s not unheard of for the i2c bus to “lock-up” on you, which can stop your system from working. If you are trying to operate a remote or embedded system, this is not ideal. This article discusses techniques that you can use to try and make your system more fault-tolerant and attempt to recover from
Reliable Embedded Systems: Using The Arduino Watchdog With Crash Tracking
The previous article in this series introduced the “Watchdog Timer “ as a tool to use to build more reliable systems; it will reset the Arduino processor in the event of the application locking up. However, as in medicine, this is like treating the symptom and not the cause. Why did the application lock-up in
Reliable Embedded Systems: Using The Arduino Watchdog With Sleepy Pi
A previous article in the series introduced the concept of the Arduino Watchdog Timer and its value in developing more reliable embedded systems. When developing systems based on the Sleepy Pi platform, we make extensive use of an Arduino library to put the Arduino to sleep. In some cases, this library uses the watchdog internally
Reliable Embedded Systems: Using The Arduino Watchdog
Embedded systems are generally extremely reliable; they are closer to the “bare metal” and don’t have the layers that a Desktop Operating System has and thus there is less to go wrong*. However, they are not without their own challenges and can also hang on occasion. This can be for a variety of reasons, from