I get quite a few hits on the old articles about the old Servo Tester, it was a useful tool but I never quite got it to a state I would have been happy to sell. A little while ago I decided to start from scratch, designing something that would be viable to sell.
Not surprisingly taking orders by email and sending out invoices wasn’t all that popular, thanks to those that did use that system though, it’s enabled me to work on this setup.
Make engine sounds for your RC with an off the shelf Arduino, a digital pot, a LM386 and some passives… Simple!
Almost all the electronics are in, only the output stage is missing, however whats there all works, as shown by the RCMojo logo.
Another step closer to a boxed up prototype, the legends were designed in QCad, printed on plain copy paper and stuck on with Diamond tape, not a perfect finish, but perfectly good in use.
A fairly long standing project has been the servo tester for RCMojo, it has all kinds of fancy features, but it’s time to move beyond the breadboard and put it in a project box.
I often see people struggling to get all the peripheral parts connected up to an Arduino without running out of pins. The thing many people miss, especially early on, is you can connect multiple things to a single pin, so long as you do it right.