krakonos.org
MSP430 information flash -- krakonoš.org
http://www.krakonos.org/p/msp430-info-flash
About electronics, geocaching and everything. The MSP430 controllers contain small amount of flash, called "information memory" (since it's meant to contain information, of course), that you can use at your will. Programming in C, I expected GCC to do the right thing and tried to use the simple code. Define INFO attribute ( section(".infob") ) int stuff INFO = 1; int main() { . stuff = 5; . }. Register holds timing data for the flash controller; here I set it to. FCTL1 = FWKEY WRT ERASE. And so it happen...
krakonos.org
MPR-A1 clone teardown & OpenWRT installation -- krakonoš.org
http://www.krakonos.org/p/mpr-a1-teardown-and-openwrt-installation
About electronics, geocaching and everything. MPR-A1 clone teardown and OpenWRT installation. Has some patches available. It seems only the right GPIOs had to be configured for the device, as the support for the chip is already in the up-stream. When searching around the OpenWRT download sites, I noticed image for the MPR-A1. I flashed it and it seems to kinda work, see the next paragraphs. The device also contains a 1800mAh battery (and it does NOT work without it! Approximate time on battery. Wifi on, ...
krakonos.org
HDD Resurrection Using Freezer -- krakonoš.org
http://www.krakonos.org/p/hdd-resurrection-using-freezer
About electronics, geocaching and everything. HDD Resurrection Using Freezer. Unfortunately, a few days later the same scenario repeated, and unfortunately, changing ports and cables didn't work this time. I've booted from SystemRescueCD and at least got some output from the Linux Kernel, trying to initialize the drive (it gave up after a while):. I've tried to reinitialize it a few more times, but without any success. You can try it with this command (where N is the bus with SATA - try some):. Or it hel...
krakonos.org
Manson HCS-3200 teardown and fan upgrade -- krakonoš.org
http://www.krakonos.org/p/manson-hcs-3200-teardown-and-upgrade
About electronics, geocaching and everything. Manson HCS-3200 teardown and fan upgrade. I've been using my Manson powersupply for some time and have been happy with it. It works like a charm, has a lot of power, and can be easily controlled via USB interface (serial emulation). The only downside is the fan, although thermally controlled, it's real noisy when it's running. As I replaced it with a new one, I took a few photos of the internals. Inside, there are a few boards. The big board is the supply...
krakonos.org
Building Isolation Transformer -- krakonoš.org
http://www.krakonos.org/p/isolation-transformer
About electronics, geocaching and everything. When working with mains voltages, one needs to be very careful not to be electrocuted. Isolation transformer can help mitigate the risk (but will NOT make it safe), and as I had none, I decided to build one myself from two UPS transformers. The transformers have three windings, one is primary and connected to mains voltage (1-2 on schematics). The two others are secondary: one of them is capable of large currents (3-4 on schematics) and the second is prob...
krakonos.org
krakonoš.org
http://www.krakonos.org/en
About electronics, geocaching and everything. Published on 16. 01. 2016). I'm going to build a small run of boards, and was looking for a vacuum tweezers to simplify my work. I couldn't find any for sale, so I built them myself; here are some notes on the construction. Circuit breakers: how they work and fail. Published on 15. 12. 2015). Manson HCS-3200 teardown and fan upgrade. Published on 12. 06. 2015). Pro'sKit MT-1232 DMM teardown and mini review. Published on 05. 04. 2015). The MSP430 controllers c...
krakonos.org
Pro'sKit MT-1232 DMM teardown and mini review -- krakonoš.org
http://www.krakonos.org/p/mt-1232-teardown-and-mini-review
About electronics, geocaching and everything. Pro'sKit MT-1232 DMM teardown and mini review. Were modifying them to output data to RS232. Datalogging meter for $31? As I read the articles, it seems a lot of meters may have this capability. Both my MT-1232 meters have the RS232 segment on a display, and it turns on on powerup for a while. I decided to investigate further and take them apart. Older MT-1232 / rebranded Victor 81CD. A bit longer google also revealed the datasheet for the FS9721LP1. The secon...
krakonos.org
Links -- krakonoš.org
http://www.krakonos.org/p/links
About electronics, geocaching and everything. Here are some useful links I've gathered in my time. Hope you'll make a good use of them. A really good stats generator, all the stats are free, some tools require modest fee. A nice OSM-backed map with trails marked with colour (Czech Republic only). Bicycle counters statistics for Prague.
krakonos.org
krakonoš.org
http://www.krakonos.org/index
About electronics, geocaching and everything. Published on 16. 01. 2016). I'm going to build a small run of boards, and was looking for a vacuum tweezers to simplify my work. I couldn't find any for sale, so I built them myself; here are some notes on the construction. Circuit breakers: how they work and fail. Published on 15. 12. 2015). Manson HCS-3200 teardown and fan upgrade. Published on 12. 06. 2015). Pro'sKit MT-1232 DMM teardown and mini review. Published on 05. 04. 2015). The MSP430 controllers c...
krakonos.org
krakonoš.org
http://www.krakonos.org/cz
About electronics, geocaching and everything. Published on 16. 01. 2016). I'm going to build a small run of boards, and was looking for a vacuum tweezers to simplify my work. I couldn't find any for sale, so I built them myself; here are some notes on the construction. Circuit breakers: how they work and fail. Published on 15. 12. 2015). Manson HCS-3200 teardown and fan upgrade. Published on 12. 06. 2015). Pro'sKit MT-1232 DMM teardown and mini review. Published on 05. 04. 2015). The MSP430 controllers c...
