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  1. spikey1973

    ws2812b ledstrip as motorcycle indicator

    It will be an addition to.. so not primary headlight nor primary indicators. just an extra visibility. i will mount it in acerbis dual road handprotectors. https://www.revzilla.com/motorcycle/acerbis-dual-road-handguards acerbis supplies white light leds, but they are costly and i would like...
  2. spikey1973

    ws2812b ledstrip as motorcycle indicator

    Hello, just a quick question, i'm thinking about making a ledstrip as an extra indicator on my motorcycle (audi style) for this i want to use a attiny85, with an on board 500mA 5V Regulator the only issue here is that there is place for 9 pcs 5050 ws2812b which use 9x60mA which is 540mA...
  3. spikey1973

    How to choose which gl55 series LDR

    @Harald Kapp, Thank you! This gives me some interesting information! I will re-do the same setup but with a different choice of light points as these do not relate very well to my plans project.. But this is definately a good way of coming to my own conclusions and shows that not all would...
  4. spikey1973

    How to choose which gl55 series LDR

    oke, i just want to use a LDR to make a sensor to sense the back ground light intensity, to automatic adjust the intensity of a ledstrip. something simple I have a set of gl55 ldr's to do that (5506/5516/5528/5537/5539), i understand that i can basically use them all., but I would like to...
  5. spikey1973

    Peltier element not drawing max Amp

    try, unfortunately i don't have the Delta T from the original,and also don't know how to obtain this.
  6. spikey1973

    Peltier element not drawing max Amp

    i decided to take it apart.. and indeed the problem is most likely the cooling paste.. but. i dropped the stupid thing. looked the part up it up and it's over 60 euro to replace ( type 12847) which means to me.. 128 np elements and 4,7A which was indeed about what it draws on the working...
  7. spikey1973

    Peltier element not drawing max Amp

    i hadn't any available at the time, i re-used what was on there initially
  8. spikey1973

    Peltier element not drawing max Amp

    Hey people, sorry a very basic but practical question. I have a peltier element that doesn't cool enough, also it doesn't draw enough current, and actually starts lower then it should and drops slowly afterwards. Now i'm wondering.. what could be wrong here? i can see 3 possible problems: 1)...
  9. spikey1973

    +DC_out_rtn, what does this mean..

    Thank you all very much, been very helpfull. but i seem to have bumped into another issue i would like to understand properly. Under the heading: STATUS AND CONTROL SIGNALS ps_on: This pin must be pulled low (sink current >2mA) to +5V_AUX_RTN to turn on the main and Fan (V2) output. The...
  10. spikey1973

    +DC_out_rtn, what does this mean..

    It does indeed, just out of curiosity. What would be the downside if I didn't connect the sense to the respective leads ? Additionally I have a power switch before this CPU and the load itself is switched too. Leaving the option for a switch at the pwr_on to +5v_aux_rtn unwanted. So I was...
  11. spikey1973

    +DC_out_rtn, what does this mean..

    Hey Guys (and galls) I got my hand on a muRata MVAC400 Series PSU https://power.murata.com/data/acdcsupplies/mvac400.pdf now i want to go and connect it and found that the main output (J2) has 6 pins +DC_out and 6 pins +DC_out_rtn as 12 pin molex connector output. unfortunately i am...
  12. spikey1973

    Step down converter and - lead

    oke, to start thank you so much for your replies :) much appreciated! unfortuntely i dont have much specifics about the converter. all i have i'll put down below as as the schematic...
  13. spikey1973

    Step down converter and - lead

    oke.. i have a small problem that is difficult to explain but i try anyways. i have a power supply with VAC input (230v 50hz) and output 46VDC. connected to this i have a step down converter which i use to step down the 46 VDC to 12VDC. Part of the issue is that the amp i'm building (amp) is...
  14. spikey1973

    Practical use of voltage divider

    thank you, yeah, in theory that would be an idea but to be honest, i'm not really open to that idea. it is a hypex PSU, high end psu for specifically for hypex amplifiers, but this one i'm not using for that purpose. i measured and they would fit, fit well actually so i just ordered them. i...
  15. spikey1973

    Practical use of voltage divider

    @ Davenn: sorry i didn't comment on that but i in my head i discarded tthe resistor option completely... what i meant with my reaction is that i looked at the buck converter option myself but couldn't find an appropriate one. whch is why i am happy with kellys_eys's reply @kellys_eye: these...
  16. spikey1973

    Practical use of voltage divider

    thank you! this would indeed be the best solution.. but as i said (or tried to) i have one of these, but the input voltage is max at 40Vdc, and this is the one with the highest input voltage i could find. well at leat with a high power output too. kind regards Matt
  17. spikey1973

    Practical use of voltage divider

    hello, I am stuck with a dilemma which might or might not have a simple solution. I have a psu supplying 46Vdc unofrtunately i need to step this down to several different voltages. 1) 14 to 20Vdc (best would be 16Vdc) to power a micro mainboard power supply thingy, using approx 100W 2) 12Vdc...
  18. spikey1973

    filter AC component by a FAN from a DC circuit with a 1N4007 Diode

    thank you for your quick respons! i'm not sure myself if this would be the case, nor how to find that out. It's been a long time since i bought this fan and i don't know the brand nor type from head and currently it's build in so i would take me a few days to get to it. if it helps it is a...
  19. spikey1973

    filter AC component by a FAN from a DC circuit with a 1N4007 Diode

    Hello, hopefully a question with a simple answer., and sorry i have to use words only. i have a PSU which supplies a 100kHz switched DC current, 2x 16V with 10A . 1) goes to a microPSU for a PC mainboard. 2) goes to a 20cm PC fan (yeah a large one) which speed is regulated by an arduino...
  20. spikey1973

    Resistor Pick Question

    it is one of those component testers that i'm soldering together. so i've been testing the resistor i have myself. and some have closere accuracy. but the tolerance is higher.
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