Category Archives: Software

Water Level Station – rain gauge

Measuring water level is fundamental goal of WLS experiment, hence its code-name (Water Level Station). Early summer 2014 hardware and software system had enough base services to make addition of entry-level pluviometer easy. Prior to PCB redesing for chinese factory I … Continue reading

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Water Level Logger – insufficient RAM

For prototype I estimated that 128kB or flash would suffice and I was right; firmware took 75kB even though fatten up by embedded strings used across the code for tracing. On the other hand 4kB RAM of Atmega128 turned to … Continue reading

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iGO out of memory – solved

iGO Primo navigation software surprised me right at the moment I needed it badly. As always I forgot to upload maps, etc, before travel, so, as usual, I did it at the hotel googling for solution. Visiting Singapore was not … Continue reading

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Water Level Transmitter – microcontroller

Once the signal from sensor is converted in ADC it has to be processed and delivered to remote master unit. Having extra local measurements sources, like temperature, it has to be combined altogether. Multiple transmitters coexisting on single line (bus) … Continue reading

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Water Level Transmitter – digitization

It was a long and bumpy way from taking pressure transducer hardware in my hands to having stable digitized values. Most of the time I spent learning instrumentation circuitry from app notes and books, just to make sure the solution … Continue reading

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Water Level Transmitter – overview

One of methods for automatic water level metering is to put a waterproof pressure sensor under the surface at well-known absolute depth and measure hydrostatic pressure that translates into the level of water over the pressure sensor. There is a … Continue reading

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Making of Water Level Station

Since the spring of 2013 I am working on most complex hardware & software solution I have ever designed and built myself. The undertaking is challenging as I am dealing with complete life-cycle of solution from electronic, mechanic and software … Continue reading

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FreeRouter for KiCad working in offline

KiCad has some built-in auto routing capabilities for laying out PCB wires. More advanced version, online auto-router from www.freerouting.net, can cooperate with KiCad and gives better results.  FreeRouter however does not work in offline even after copying Java Web Start resources to … Continue reading

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FreeRTOS on Atmega8?

How to compile FreeRTOS real-time operating system on 8-bit AVR microcontroller Atmega8? It is not supported out of the box as well as google hardly helps with that issue. I did some experiments and understood why people are not doing … Continue reading

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Apple Messages failing to login to Google Talk

So you may want to synchronize your iChat/iMessage/Messages with Google Talk on your beloved device while the application insists on wrong password even though you double- (or even triple-) checked it is in order. Log review brings cryptic error like: … Continue reading

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