Neat Project on my To-Do List

erco

Senior Member
This nifty Arduino project appears to use one ultrasonic sensor and one servo to keep a ball centered on those rails. Elegantly simple form factor! Should be doable with a Picaxe 08M2, IMHO. Looks like a great demonstrator project for PID loops. Maybe a good opportunity to finally use a VL53L0X laser sensor. Keith Baldwin shared his simple code at https://picaxeforum.co.uk/threads/erco-laser-range-finder.30127/post-329540

I will get to it trying this project at some point. Sure hope nobody beats me to it! :p


That's just a screenshot below, don't waste your time clicking on it!!! Visit the Reddit site above to watch the video.

ballsensor.jpg
 

erco

Senior Member
My three panel meters to make my clock arrived from AliExpress. One seems nervous.

 

papaof2

Senior Member
Look like the lower spring has one less turn than the upper spring or is wound less tightly - that would affect calibration.
Does my knowledge of moving coil meters make me ancient?
 

papaof2

Senior Member
I used to make labels illuminated from the back using one of the document films - maybe D-14? It made great solid black and completely clear negatives - ideal for illuminating with even an ancient low light LED.
 

papaof2

Senior Member
The Brother HL2270DW laser printer is on its third (fourth?) drum. I may yet have to replace it :-( Maybe next year?
It's a wireless, double-sided capable printer so it gets most of the printing from me and my better half. I did run off the initial proof of my first book (800 pages) on that printer. Can't imagine why it's showing its age ;-)
The inkjet printer is also a Brother (J430W) for the few occasions - such as a graph from the small solar power system - which need color. The J430W is probably 10 years old but has one redeeming quality - it continues to work - all the features: print, scan, copy, fax and the document feeder ;-)
 

bogbean

Member
Yeah this project does sound neat. I'm looking forward to seeing how it goes.
I keep meaning to dip my toe in with AliExpress instead of using ebay.
Oh and your ozone project looks interesting, are you allowed to post more details of it?
 
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