OSH Park is a PCB manufacturer tailored to hobbyists. They take orders for very small quantities of boards (minimum 3) and they are able to do this by taking small hobbyist projects and compiling them into a big batch. A typical two layer board costs US$5 per square inch. […]
Monthly Archives: August 2017
5 posts
In my previous post, I showed how to build a square wave floating above ground using an operational amplifier. I originally did my test at 5 Khz, which worked quite well but gave a nasty humming sound. The signal must therefore be above the hearing range; and I have settled […]
For my next project I would like to do a big VFD display using Russian IV-25 tubes. This has lead me to read a lot about these tubes and their notorious filaments. Long story short: they are very fiddly and require a low AC voltage which is quite hard to […]
We continue to enrich the website with new content and today I am pleased to share with you a new tutorial on the Microchip 47C16 2kb I2C ram (and its 47L16 low power counterpart). It’s in my opinion one of the best chip to start with an external serial […]
What’s new in China? New maker products roundup August 2017 Here are new maker products recently released which are worth looking at: ESP32 is love Keyan Technlogy has a DOIT ESP32 board for $7.50. They are a big reputable shop on Aliexpress and it’s a good price for an ESP32 […]
