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Category Archives: Soldering & PCBs.
Well… the device I got at work was a sad case of “dead on arrival”. Temperature regulation was totally crazy, touching the case moved the measured value from about 350°C to 60°C, with a subsequent massive overshoot. So we have … Continue reading
It smell something… sniff sniff … yes, I smell BS!
Don’t you just hate it when you run out of holes and have to use a bridge wire to some free patch on the proto-board? I thought so.
There are DFN10 / QFN10 test-sockets, but these things cost close to 100 bucks, which I’m not (yet?) willing to spend on this. If this should work, I would be able to add preprogrammed chips to some SMD DIY kits … Continue reading
Adding some more stuff is always fun.
The lack of an ISP connector on this board has given me a lot of grief. This little adapter board will solve that problem once and for all. It also provides a couple of through-hole pads for potentially adding some … Continue reading
My first ‘real’ panel.
Possibly (and hopefully) the last post in this little hot-air station series. I’ve opened and closed that device far too often – and popped out the chip multiple times in each instance. You see the designer failed to add a … Continue reading
After tweaking some control loop parameters and adding a hard-limit for the temperature (heater cut-off + resetting the error term, effectively restarting the loop), the massive temperature overshoots are a thing of the past. I declare this a success. “Some … Continue reading
In part one I dealt with the very basics: fan control, buttons and the display. Now it is time to attack the business end of this device! Safety warning / disclaimer: Please understand that operating a device powered by line-voltage, … Continue reading
The YOUYUE 858D+ I have in my possession uses an AVR ATmega8 microcontroller to control the fan-speed, drive a 7-segment display, read 2 buttons and drive the TRIAC via an opto-isolator.
In a previous post I had taken a look at the innards of said soldering station. Now it is time to see if it is usable. I tested it in several ways…
This device seems to be a clone of several other branded ones out there. The Atten / Aoyue 858 come to mind ;-) I bought it on ebay for 38€ delivered.
If you use the right footprint!
First generation (now obsolete) stencil from OSHStencils.com:
As of late I’ve been making smaller and smaller circuit boards, fighting for every mm² of space. The typical 6pin ISP connector used for programming a lot of the AVR micro-controllers has been getting in the way more and more.
Now that the ‘customs-guys’ have finally released the LED-driver ICs, I can finish this project. 4 Weeks is a looooong time for ‘air-mail’. If you’re thinking about 100% hand-assembly, start with the LEDs first! Then add all the other small … Continue reading