EEVblog #1030 - $20 DIY Bench Power Supply!

[plazma]

I'm looking to get a couple of DPS3005 comms version to build some automated testing for a product - was about to press go on a Tenma with USB from Element14 and then try and munge a Python script for control and monitoring !

Protocol for the DPS serial seems to be based on ModBus RTU, but I found some Python code someone wrote that can talk to it easily.
There is some good info about remote controlling them here : http://ls-homeprojects.co.uk/dps3005-psu-module-and-modbus-rtu-python-arduino/

Bill.

Here is a translated document about the communication protocol https://drive.google.com/file/d/0B4-iOelpRB0tWjAzUnJZNkVicWs/view?usp=drivesdk

[Red Squirrel]

Well I caved.  Bought 3. 

Alibaba's site was frustrating me with that annoying modal popup but found some on Ebay too: http://www.ebay.ca/itm/RD-DPS3005-buck-Power-Supply-LCD-color-display-step-down-voltage-converter-/292040632850?hash=item43fefa6a12:g:VwEAAOSwImRYXJme

[bitseeker]

Just log in to make the popups go away. They're for "new" visitors. (Yeah, nice way to welcome someone for the first time, eh? )

[bill.coghill]

Pulled the trigger on 2.  Lets see how long the 'upgraded' shipping takes....
bill.

[sempaiscuba]

I saw the DP20V2A module on eBay this morning for just £1.98 (GB) with free shipping!

eBay auction: #http://www.ebay.co.uk/itm/New-DP20V2A-CVCC-Programmable-Control-Step-Down-Power-Supply-Module-LCD-Display/292005962189

[StillTrying]

I saw the DP20V2A module on eBay this morning for just £1.98 (GB) with free shipping!

I think the DP versions are harder to set V & I.

"This listing (http://www.ebay.co.uk/itm/New-DP20V2A-CVCC-Programmable-Control-Step-Down-Power-Supply-Module-LCD-Display/292005962189) has been removed, or this item is not available."

[Red Squirrel]

Wow that was fast, mine just came in. Did not get a chance to play with it though.