The fxp is a perfect product, well designed & open-source. The configuration / switching the output voltage and maximum current is easy as it is done via smartphone screen blinking pattern to the photo-transistor on the fxp. The shipping from Australia to Czech took a bit longer than expected, anyway the tracking from Australian post was perfect, up to date. As I am opted-in for Czech Post duty and TAX services we went through the process in few days. I am very happy with the product and the personal support by Mansour, the creator of the project. All you need is available online at https://fpx.oxplot.com/
Response from oxplot | May 5, 2021
Thank you so much for you review! Glad you liked it.
Ordered two of these and it's very nice to be able to add a quick power source with support for a variety of voltages and currents to my projects. They are very easy to use! Thanks a lot! If the come back in stock I'll be tempted to order a couple more.
Response from oxplot | March 8, 2021
Thanks! Yes, they'll be back in stock in a month or so.
Nov. 30, 2020
Replace all the legacy power connectors with USB-C
I'm using the fpx right now to power the Thinkpad I'm writing this review on and it's awesome! I've known the predecessor https://github.com/oxplot/fabpide2 already and actually wanted to buy it when it was out-of-stock and a bit later the fpx was announced - I'm so glad I did wait. Easy configuration via https://fpx.oxplot.com/ (can also be self-hosted for offline usage) is just the greatest thing, such a low barrier of entry and works reliably on maximum screen brightness.
Having the fpx available opens up so many usages for different devices and different means of USB-C power delivery via charger or power bank.
The only tricky thing is how to mount the fpx nicely, needs to be located in a device's case (which could require some irreversible destruction) or in a separate case which one needs to built. Also the holes for connecting the wires (not the mounting holes) could for some existing cables be a bit larger in diameter, currently they measure 1mm which for sturdier cables could be too little.
I've had this thing on my desk for less than an hour so far, and I'm just thrilled with it. Especially as I'm looking to power different projects (esp through things like mobile power banks,) being able to quickly and easily switch between different PD standards with nothing more than dropdowns and a flashing screen is going to be an absolute dream now.
What an awesome little device, clever design, and adorable execution. Well worth the price of admission.
Response from oxplot | Sept. 15, 2020
Really glad to hear you like it. Would love to know what projects you'll be using fpx in.
Good quality board that fulfills an essential function. I'd love to see a revision with a physical UI like solder jumpers to set the most common voltage / current combinations such as 5 V / 3 A, 9 V / 2 A, 12 V, and 20 V, but programming it was straightforward enough.
Response from oxplot | Dec. 4, 2019
Thanks Roland for buying the boards and taking the time to leave your feedback.
> I'd love to see a revision with a physical UI like solder jumpers
I had this idea at the beginning but the chip I've used on this board can't be used this way. It would either need an extra uC or an entirely new chip. I'm always on the lookout for new ICs and will keep this in mind for the future.
Being a product from ST, there is a lot of support documentation and example software for working with the USB PD controller IC.
This breakout includes the expected I2C lines, but also exposes signals (ALRT, ATCH, AB, PD2, PD3, and a configurable GPIO) that offer a lot of functionality without needing to use the I2C interface (once configured). If using an external MCU, however, most of these pins are unnecessary.
I'm personally using an external STM32G0431 to interact with the device, which gives you an unrestricted number of PD contracts -- unlike the 3 PDOs limited by NVM in standalone mode. When changing PDOs dynamically, the IC ensures VBUS never drops below +5V, which is great if your MCU is powered from VBUS :)
Great device, very flexible and reliable, will buy again!
Response from oxplot | Dec. 4, 2019
Thanks a lot Andrew for this and your earlier feedback.