About Charles Pax

Charles Pax is the founder of Pax Instruments. Charles is the former Director of Research and Development at MakerBot Industries, having developed the MakerBot Replicator 3D printer.

USB telescope controller

Kevin made a kill telescope controller. It is a simple Arduino-based device for interfacing with a motorized telescope mount. This would be a fairly simple device to make. How big is the interest in something like this? Maybe Pax Instruments should manufacture one. There’s many complex systems for automatically pointing a telescope at an object [...]

By | May 16th, 2015|Notes|

Should You Care About Software Defined Radio?

In addition to cost and flexibility, Hackaday's article explains why software defined radio is awesome and why now is a great time to get started. First off let’s reconcile what is meant by “radio”. If it sends or receives via radio frequency it has a radio in it. This means your WiFi router, your cellphone, your [...]

By | May 15th, 2015|Notes|

BeagleLogic Logic Analyzer

With the BeagleLogic, Kumar Abhishek's seeks to turn you Beagle Bone Black into a 14-channel, 100Msps Logic Analyzer. The project helps create bindings of the PRU with sigrok, and also provides a web-based front-end so that the logic analyzer can be accessed in much the same way as one would use the Cloud9 IDE on the BeagleBone/BeagleBone [...]

By | May 15th, 2015|Notes|

Injecting SD Card Bootloaders

Wow, Frank's technique for changing his bootloader would make Rube Goldberg proud. [Frank] has a Ultimaker2 and wanted to install a new bootloader for the microcontroller without having physical access to the circuitry. That means installing a new bootloader for the ATMega2560 without an In System Programmer, and as is usual on AVRs, the bootloader can only [...]

By | May 14th, 2015|Notes|

TSL2584TSV Ambient Light Sensor

Here's a light sensor we're thinking about using for a future project. It's not lab instruments quality, but there a few fun projects we have lined up. The TSL2584TSV is a very-high sensitivity light-to-digital converter that transforms light intensity into a digital signal output with a fast-mode I²C interface. The device combines one broadband photodiode (visible [...]

By | May 14th, 2015|Notes|

Pax Instruments launches new products

If you keep track of the store you already know we recently launched a few new products. We are putting the finishing touches on the T400 and some of our components have been rolling in. We have purchased extra of everything, so we can make these wonderful parts available to you for your projects. The [...]

By | May 13th, 2015|Notes|

Raspberry Pi Solar Weather Station

PiJuice made a solar powered weather station. The key component  is their self-deisgned PiJuice solar module with integrated battery specially designed for use with a six volt solar panel. A full linux machine like the Raspberry Pi is probably overkill for a weather station. The power requirements can be reduced by using a lower power ARM [...]

By | May 12th, 2015|Notes|

Haber Process via Ultrasonic Cavitation

Peter Walsch aims to apply ultrasonic cavitation technology to the nitrogen ammonia manufacturing process. His proposed method is not necessarily more energy efficient, but it means you may be able to generate ammonia from nitrogen and hydrogen on a laboratory scale. More importantly, however, is how this method might be applied to generating other chemicals. [Peter]’s idea is [...]

By | May 12th, 2015|Notes|

Arduboy retro gaming in your pocket

If you love open source hardware and retro gaming, check out Arduboy on Kickatarter. Arduboy is an open platform for people to play, create and share games. A game system the size of a credit card. Choose your favorite classic game from the completely free Arduboy Arcade. Built on the popular Arduino software, it’s also [...]

By | May 11th, 2015|Notes|

USB circuit protection

Electronics-Lab.com shares a hot tip on protecting USB circuits during manufacturing tests and it can be used in other measurement and automation applications. Applications notes like this have been indispensable in designing the T400 temperature datalogger, for which we used TVS diodes and a thermal fuse. USB data-acquisition modules offer good value and ease of use, [...]

By | May 11th, 2015|Learning, Notes|