Recent content by premelec

  1. premelec

    My Analogue inputs (Pots) have very fine range of adjustment.

    One of my favorite pot hybrids that sort of implemented vernier was two pots on same shaft one 10 times R of the other and mechanical 'slop' between the major change and minor change pot so when you backed off from slight overshoot of the setting changing direction of rotation only actuated the...
  2. premelec

    My Analogue inputs (Pots) have very fine range of adjustment.

    I've seen many 270 deg and some 360 deg and 3 to 15 times 360 deg pots [multi turn] but don't recall seeing any 180 deg - would be useful for a 180 deg servo feedback... [also have seen tapped pots at mid point or other points]. Something new... ;-0
  3. premelec

    My Analogue inputs (Pots) have very fine range of adjustment.

    Do you have a multimeter? Test the actual output of the wiper as connected - paralleling the pots should not affect their output characteristic unless you have a 'soft' [high impedance] 5 volt power supply which will then draw down the actual voltage from 5v - also the SAME supply to the pots...
  4. premelec

    Analogue input basic test is failing???

    "I have measured the pot-ends to confirm there's definitely 0v-to-5v across each pot, with varying voltage on each wiper as expected. " If you did this why do you doubt the pot integrity? Presume you measured at actual PICAXE pin rather than at pot.... ;-0
  5. premelec

    Be afraid, very afraid !

    Full frontal robotomy?
  6. premelec

    Anyone Used Nextion Displays?

    Yep gotta see all the other screens not lit - and have those very interesting neon plasma spectrum bands... There were numeric indicators with engraved plexiglass numbers stacked and lit with incandescent lamps and so many other heroic attempts at numeric displays - we've come a long way... [not...
  7. premelec

    Monitoring the load on the National Grid with a PicAxe

    Let us know how this works out if you try it - sort of like listening to refrigerator and other appliances on house cycling only for the whole grid... perhaps a glissando between states would be interesting ...
  8. premelec

    Monitoring the load on the National Grid with a PicAxe

    Suggest you have it play a different tone for each .05Hz above or below 50- then you don't have to watch and can just be driven crazy by the tunes... ;-0 And for fun have a random sample interval...
  9. premelec

    SX1276 E32-915T20D LORA Command Format

    Thanks all for that confirmation of HEX - it'll be a while before I try it out... need to work up hardware and code. 🙂
  10. premelec

    SX1276 E32-915T20D LORA Command Format

    I have obtained 2 Ebyte E32-915T20D LORA modules to try establish a basic data link through some obstacles over about 1/2 KM. The manual seems pretty thorough... however if I'll need to change command format I'm not clear on the instructions to do this. See attached picture of this part of the...
  11. premelec

    Battery Voltage Scaling

    if for some reason you want to use an external ref check out the TLV431 adjustable shunt 'zener'
  12. premelec

    Controlling WS2812 5050 RGB LED

    APA102s have a better strobe rate as well as easier drive...
  13. premelec

    Can't get code to recognize switch closure in motor gear train.

    perhaps try a small capacitor on the C0 pin to 'stretch' the signal ...
  14. premelec

    Controlling WS2812 5050 RGB LED

    There are drivers that can accept slower data and put it out to the LED strings - if you want to drive a string directly by PICAXE use APA102s [see NLEDshop.com for drivers]
  15. premelec

    Function serin & serout

    It varies but ordinarily much less than you talking to your wife or hippy's example... :)
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