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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by Overclocked

  1. Overclocked

    Microchip buys Atmel

    I am actually looking forward to a PIC compatible Arduino type system. I mean, what the hell, why is all the cool stuff for arduino now :( (Im looking at you TFT screens..). At the same time, because of Arduino there is cool stuff on the market. Maybe there will be a merge of the two, maybe some...
  2. Overclocked

    Are PSpice & LTSpice worthwhile or just trouble?

    Q:Would Multi-sim count as a PSpice and LTspice type tool?
  3. Overclocked

    New ICs are a nightmare

    I actually did this! I used a PID controller from Ebay and bought a cartridge heater as well. Used to use them at work for heating up dies. I sort of custom machined my own block, it should be bigger but it works. a 150W Heater should be fine for small boards. Ideally you would want a Ramp/Soak...
  4. Overclocked

    Looking for a kit

    Im looking for a kit, sort of like this one (the DIY gaming kit), but with a PCB. I know Ive seen them around the web somewhere but I cant locate one. Would be great if I could locate one that plays just tetris and is in Kit form.
  5. Overclocked

    XXX is following you - What is that all about?

    Same thing can be said for certain "adult themed" sites. Why is there a share button? Why would I want to share that to all my friends on FB?
  6. Overclocked

    Best China customer service award goes to?

    I ordered from them a while back. For the price it would have cost me for 3 boards at OSH park, I got 12 boards and I got to pick my PCB color! I was sort of getting sick of having purple PCBs everywhere. They aren't bad, I haven't soldered them together yet. I would do it again if I needed a...
  7. Overclocked

    4-20mA loop calibrator

    Not really. Just a exercise in precision. The simulators we have eat up batteries like crazy, and recently I had to do something that involved letting my program do stuff over night, so I figure why not use it as a opportunity to make something
  8. Overclocked

    4-20mA loop calibrator

    You know, I looked more at the calibrators at work. How can they be accurate down to 0.001 mA or +/- 0.015% (speced out the in datasheet) when the best components are accurate to 0.02% or more?
  9. Overclocked

    4-20mA loop calibrator

    Hmm, Well Ive reduced that schematic down to the bare basics, ie without all the fluff, as far as my understanding goes. I dont need it to work at low input voltages, so I removed R2, R3 ,R4 and VR1. Instead I will change R6 (Called out as R1/R2 in my schematic to vary the current). However, it...
  10. Overclocked

    4-20mA loop calibrator

    Essentially, this is what Im thinking of. RL wont be there on board, it will be off board. Values have not been picked other than my power source (which is 2 9V batteries) and Reference voltage. RS sets the Current out, in this case Vref/Rs. I chose 4.096V because it gives me a larger range of...
  11. Overclocked

    4-20mA loop calibrator

    Opps! That's what I meant. I will use a switch to switch between 4mA and 20mA, which should be as easy and switching between resistors.
  12. Overclocked

    4-20mA loop calibrator

    I want to build a 4-20mA loop calibrator for work. Ive decided it will be powered by a battery (9V) but can also be loop powered to withstand up to 30V. I originally looked into using a LM317 as a constant current source, But 1) I am worried about accuracy and 2) The resistors I would need are...
  13. Overclocked

    Alternatives to ExpressPCB

    Ditto for OSH. Dirty PCB if you need a lot of boards at a cheap price (or bigger boards where it would be too expensive through OSH park).
  14. Overclocked

    PIC to ESP12E wifi IoT module

    I did some digging around. Here is some documentation direct from ESP https://bbs.espressif.com/viewtopic.php?f=67&t=225 Here is the latest firmware https://bbs.espressif.com/viewtopic.php?f=46&t=1702 Re-flashing https://www.xess.com/blog/esp8266-reflash/ I had a quick look at it, and it...
  15. Overclocked

    Time Peake space walk and panel change

    I Know Im late replying to this, but I found something interesting on that subject. https://www.nasa.gov/mission_pages/station/research/experiments/634.html
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