Products > Test Equipment
Power supply ripe for the picking
duckduck:
From the Amazon listing: High quality toroidal pure copper transformer? That's not even high-quality pure marketeering wank! It's not even a linear supply, it's a SMPS! :-DD I guess it has several E-I transformers in there with copper windings. I don't see a toroidal tranny.
Also, notice that the back panel and side of the front panel have been photoshopped on. The back panel has a 2D look to it. I love the USB B jack on a PCB in the DB9 cutout. Make up new stampings? Hell no! Use the ones we can get cheaply!
I think that it is the cheapest functional programmable power supply in the 30 V / 5 A class that can be bought new in the USA. The RD6006 is close in price if you get it direct, but a little more expensive once you throw in a power supply and case.
I wonder how hard it would be to get this thing talking to sigrok? https://sigrok.org/
How does this compare to the Korad KA3005P on specs? http://www.koradtechnology.com/product/14.html
SpeedProg:
I wrote sigrok driver for an RS310P (just an other rebrand of the eTommens eTM-3010P), the HM305P is just an other rebrand also.
To add the HM305P to the driver, I would need to know the contents of the 0x04 (class details) and 0x03 (model).
I would assume the values are 0x4B50 (in 0x04) and 0x0131 (in 0x03) but I'd rather know for sure before adding it to the driver.
The easiest way to do this for you is proably using the script mentioned above in https://github.com/markrages/py_test_interface
Suimi:
Thank you very much SpeedProg!!
I just unboxed my new Hanmatek HM310P and just started playing with it. The hm305.py is reporting the following values:
Model (0x03): 0x0BC2
Class (0x04): 0x4B50
Please let me know if I can be of any help with your driver. Thank you again.
Max3D:
Great work in progress guys. Glad I found this forum as wireless control of the power supply would be awesome. I have a Rockseed 60V, 5A amp version, the RS605P. I hope the software will be compatible with this model.
For the moment I have a problem: the original software can't be downloaded as the link is dead and the mini CD I can't use. Does anyone have the latest software for me?
Miq1:
Hi guys,
I will be getting my HM305p tomorrow and already read this thread with interest. I have done some stuff with Modbus and found it funny the PSU comes with a Modbus server built in ;)
If you are still looking for a way to bring the device online, you might have a look at the ESP32 Modbus library we have been writing recently: eModbus at Github. The device that comes to my mind would be a "ModbusBridgeWiFi", that does accept requests over WiFi and will forward these to the PSU, then respond back with the data the PSU has sent. You of course will have to write the program yourself on your PC or whatever to talk to the Modbus bridge.
I am looking forward to examine the PSU closely to find what else might be hidden.
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