1. That's disappointing. I thought you might describe how the caliper gauge works. It's actually some kind of capacitive sensor. (Peel off the scale to see the surface being measured.) I'd love to know the details of how this operates.

   Reply

2. Hi Julian,
   I think I am having trouble with the smd resistor on the purple INA219. I've tried to substitute the R100 with an R010 to measure 32 Amps at 12 volts and burned up a board. Could you comment on the correct resistor for the higher amperage modification, please? You called the R100s 100milliOhms and I'm not sure of how that is derived.
   Thank You,
   Nick

   Reply

3. Who needs that imperial rubbish? For small stuff i prefer mm. Just take out that button

   Reply

4. the lightbulb is use to stabilize the oscillator. It's actualy a pretty common technique.

   Reply

5. Should look at the one I just bought from a UK seller.

   What a joke, cost me £9.99 and the finish is horrible for a complete metal calliper, its accuracy is anyone's guess, it measures 1mm more than it should do and under measures and never reads zero.

   It has movement and when its "wiggled" in a zero position, the counter on the LCD goes up.

   Reply

6. what can i search on ebay to find a beginner build kit ?

   Reply

7. A hair in a kit.🆗🆗🆗🆗

   Reply

8. Many moons ago, I decided to tear apart my Daisy Spit'n Image lever action BB gun, that fire control group reminds me very much of what I found inside my old BB gun. Never could get the damned thing back together again. Perhaps that is why I took that stupid gunsmithing course years ago and hung out my shingle, after all every town of 1800 folks should have 3 working gunsmiths! Well in North Dakota it should, and even better if the 3 are close friends who share the work load and tools.

   Reply

9. Hi Julian it seems that on the power bank that works there are two resistors on the data lines pulled to vcc and ground,the pondland power banks don't have these,I think its something to do with them,I've read that apple devices need them for charging,and it seems my v-usb circuit bennafits from them some how.

   Reply

10. Hi Julian, I've got a question to ask,its not about postbag but about power supply's! Hear goes,I've a development board based on v-usb its called pixel loader,it basically runs strings of ws2812b led strips,now I use 5v dc usb power supply's,sometimes i use phone chargers, as my development board pixel loader is just a USB stick dongle kind of design with a 328p on board, it just plugs in and runs sketch loaded,Now hear is my problem,some of the USB power supply's don't seem to work,there is power to my board but won't run,its in spec at 5v and I never over load current I only run a few LEDs in a strip. I've a load of them and some work and some won't,do you think is because they may be too noisy? I can't think why they wouldn't work,even when I've no LEDs powered the the board won't power and run,Ime using usbasbloader as the bootloader so I can plug the stick into the PC and change my sketch quickly, I think its something to do with the power supply sending noise down the USB lines maybe,what do you think? Its so strange,I've seen this a lot even with power banks not powering some projects but will others even when in spec.thanks

    Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.