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  1. Delta Prime

    Looking for some ItsyBitsy M4s

    What I do is... I never download the app for that particular online store. Try a different web browser that is different than Google. Clear out all your cookies. So they will have no idea where your geographical location is until checkout then give them that alternate shipping location you...
  2. Delta Prime

    Looking for some ItsyBitsy M4s

    https://www.temu.com/search_result.html?srch_scene_type=main&search_key=Adafruit%20ItsyBitsy%20M4s&source=10001&page_el_sn=200268&search_method=user&_x_vst_scene=adg&_x_ads_sub_channel=search&_x_ads_channel=google&_x_ads_account=9563390919&_x_ads_set=20726558303&_x_ads_id=152943442017&_x_ads_crea...
  3. Delta Prime

    How to build a millivolt signal conditioning circuit with compensation?

    I have used this SN65hvd57 RS 485 driver/ receiver,with a high degree of success. But I prefer the Max12900
  4. Delta Prime

    Exercise arm bike power board repair

    Physiological! If you're working out when you heard the pop it could have been the increase blood circulation to your cochlear nucleus responsible for relaying information from your ears to your brain. Your hearing sensitivity increased and you heard the cold solder joint go " pop." I enjoyed...
  5. Delta Prime

    In Wind Turbine, DC Motor is rotating from battery energy, discharging the battery after charging.

    That doesn't matter we're here to help. You must steer the energy to move in one direction -> forwards only to your battery pack. You are allowing it to move <- backwards. Diodes are normally used for steering. Your battery bank is the heart of the system, within the charge discharge...
  6. Delta Prime

    Component id needed

    That is a very interesting point! Do you mean something like this?
  7. Delta Prime

    Thermoelectrics and Thermophotovoltaic modules

    Are you a scientist? I've only read about them in history books I'm sure that the technology has advanced they have multi megawatt reactors now, the old multi 100 watts, were used on NASA's Voyager 1 and Voyager 2 dinosaur spacecraft which were launched to explore Jupiter and Saturn . Each...
  8. Delta Prime

    Absolute Pressure Sensor For SPL Metering

    Forgive me...I believe he said [{(WTF) What The Frequency}] was. :)
  9. Delta Prime

    Dettol no touch soap dispenser ~ ques ~

    Photo transistor, photo diode can you take a photo? I opened my soap dispenser I thought I would find a tiny little motor running the pump. I was wrong!
  10. Delta Prime

    Kitchenaid Artisan Mini 3.5 Quart Tilt-Head Stand Mixer

    An Ex- Patriot I'll help you anyway. Welcome to Maker Pro. :) Come back home! Can you take a photo? I have to see this... https://www.appliancepartscompany.com/Whirlpool-Control-W11112201
  11. Delta Prime

    learn how to check capacitors

    Deep down I know you're right. :) Honestly I didn't bother to look at the online calculator never used them. But I gathered the gentleman wanted to know if the capacitor is good or bad. Hinting as to using Tau. All capacitors have ESR, but the higher capacitance (and therefore lower reactance)...
  12. Delta Prime

    Component id needed

    I would put that back! There are sacrificial lambs. I usually see them get destroyed, kaboom! It looks pristine to me. If it's a VCR from the 80s that's the least of your worries. Even right now you pull it out of the circuit the circuit should still work with or without it and they are normally...
  13. Delta Prime

    Exercise arm bike power board repair

    You going to have to determine what type of transistors they are. In your case I would test out of circuit. As you stated previously no obvious damage to components. Check the diodes they can fail short as well as open. Did you take a look at the generator? Sometimes they include safety measures...
  14. Delta Prime

    Exercise arm bike power board repair

    Are you sure? Don't you pedal with your feet? Anyway I hope this helps.
  15. Delta Prime

    learn how to check capacitors

    Effective Series Resistance (ESR)is the real resistive component of the complex impedance Z(Ω) = R + j X(Ω) of the device. Your capacitor! My friend you must Marshall you thoughts and formulate a question. You wish to learn how to check capacitors ( the title of your thread) you wish to check...
  16. Delta Prime

    learn how to check capacitors

    What you are describing is Tau, symbol τ, is the greek letter used in electrical and electronic calculations to represent the time constant of a circuit as a function of time. That is a times constant for an RC circuit...
  17. Delta Prime

    Not sure what sensor to use

    I'm an idiot savant; without the savant. Can we just help people, that's all I want to do.
  18. Delta Prime

    Comedy Thread

    How do you keep a turkey in suspense? I'll tell you tomorrow.
  19. Delta Prime

    How to find components with certain specifications

    Well if it was me I would start with asking a pediatrician I'm pretty sure they have preemies Using exactly what you have just described. I know you're trying to do a proof of concept I would try googling Neonatal CPAP Device components . Manufacturers distributors. Go from there.
  20. Delta Prime

    How to find components with certain specifications

    You really want to assist those with sleep apnea; you're dealing with the human respiratory system. Are you medical student? The U.S. Food and Drug Administration (FDA) has issued a final rule, “Classification of the Positive Airway Pressure Delivery System,” effective Oct. 19, 2018, that...
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