Few pieces of gear are more basic to electronics than some kind of power supply. It might be a box of batteries, or it might be a high-end lab supply. [Andreas] took a DPS5005 power supply module that has USB and Bluetooth and used it to build a very capable switching power supply which he then used to build a source measuring unit.
The user interface on the diminutive module is simplistic, so [Andreas] appreciated the PC-based software that can control the supply remotely. The module can output up to 50V, but you should plan accordingly as it does need 1.1 times the maximum voltage output on the input. It will work with lower input voltages, but it just won’t be able to output as high a voltage.
IF 50V at 5A isn’t your thing, there are similar modules available that can handle more or less voltage or current, depending on your needs. Be careful, though, as the communication options are not in the default model, nor is the nice case seen in the video. You’ll have to make sure you get those options if you want them.
If you want to try alternative firmware, we looked at that earlier. We also looked at an earlier version of a similar module.
Unable to view the video right now but has anyone ever checked these things with a scope and a decent load on them, or even no load?
Just because something produces voltage with a certain current capacity doesn’t necessarily mean I would want to plug anything into it.
Check this
http://lygte-info.dk/review/Power%20DPS5015%20UK.html
After reading that… not too bad… except of 0.5v overshoot on the higher loads… could cause problems in rare cases.
Stick this and a 48V-li-po/li-ion battery pack (think e-bike) into the same casing and you’ve got a portable test PSU for that random situation where you find yourself without an outlet (i.e. E-bike repair by finding that shorted MOSFET so you can take it easy on the way back to your workshop, for example)
It’s tested in the video. Watch it when you can. The noise analysis is around 7m45s mark.
I’ve read the DPS does not hve any short-circuit protection and die easily, is this still the case for the last generation?
Are there any hacks to work around this issue?
“Are there any hacks to work around this issue?”
An in line quick blow fuse perhaps?
You sure? I thought it had built in current limiting? (The A button)
Was this not covered 2 years ago with some nice modding etc and wifi shield for some odd reason ? with custom firmware, The link for what is here surely.
https://github.com/kanflo/opendps
Seems it’s close but not entirely the same…
https://johan.kanflo.com/dps5005-now-with-comms/
I was pleasantly supprised these modules nowadays come with built in serial and some documentation.
I do not care much for the (probably only windhose) GUI but a little lib for scripting with Python should not be difficult to write if the documentation is any good.
I’m also interested in accuracy of setpoints & measurements
The output is fused with an SMD fuse. But normally, the current is automatically stabilised to at max 5A
Anyone tried seeing what the serial output is from the meter now? Somewhere else it said MODBUS, but there’s nothing showing the output, or the commands, etc. There should be no good reason not to have a Bluetooth phone App for this if it’s got a bluetooth option.
in the “DPS5020communication protocol -chinese version V1.2.docx” document it sais moddbus-RTU and there is a discription.
This is the link i got the document from:
https://www.mediafire.com/folder/3iogirsx1s0vp/DPS_communication_upper_computer
You should also note that there’s cool, but yet somewhat incomplete opensource firmware for DPS5005:
https://github.com/kanflo/opendps