Products > Test Equipment
OWON XDM1041 the unknown multimeter...
John+audio:
Farnell in the UK have just added this product to their portfolio of test equipment under the 'MULTICOMP PRO' brand name.
https://uk.farnell.com/multicomp-pro/mp730889/dmm-bench-10a-1kv-50mohm/dp/3972198?MER=TARG-MER-PLP-RECO-STM71233-2
£114.07 plus VAT
bffargo:
--- Quote from: bffargo on October 17, 2022, 12:54:42 am ---Did some testing with a 1041 seeing how easy it would be to hack it into a 1241 with only a couple inexpensive parts.
The internal mains AC->DC power supply is labeled as 5VDC@2A. Actual power consumption measured by feeding in 5VDC from bench supply directly into the output pins of the built in one (not removing it from circuit) are as follows with screen brightness at 25%
Standby: 6.15mA
Boot: 160mA
Run (VDC mode): 100mA
I didn't test any other modes
The mains ground pin is connected all the way through on the negative power rail up until it connects to the meter board at which point it is isolated from the front inputs.
It seems a bypass switch (/ hard power off), a USB>LiIon>500ma(to 2A) charge+inverter board and a decent 18650 should be enough to keep it powered for about 10 hours for little cost and lots of room to put it in the back with the mains board removed.
--- End quote ---
Update: I finally hacked mine, and found out it doesn't need a full 5VDC into the logic board. It gets by just fine with direct LiIon 3.x volt output and doesn't need to be boost converted back up to 5V as per the original AC>DC converter in it.
I used a tiny micro usb battery charger and a 18650 cell and connected that up to the AC>DC board, then feeding its second output (that is always kept at the voltage of the LiIon charge when on battery alone or ~4.2V when connected to a 5V input.
To my surprise it has been running fine at the lower voltage without issues. I presume it may be dropping to 3.3V or so anyway once on the logic board, but didn't go poking around to verify.
I thought I'd share for anyone else that wants to do a quick hack of the AC powered one into a 18650 powered version. Just need a couple 5 pin male XH2.54 male header pins and a 5 pin female plug with just 2 wires for voltage and you can bypass the feed through to the serial port then and connect up the battery/charge chip.
I didn't take a picture of my mod, but here is a quick drawing.
luma:
I've designed a couple 3D printed solutions to mount the XDM1041/XDM1241 for a few use cases.
Here's a model for Gridfinity which lets you mount the meter to a base plate and then stack that into existing gridfinity solutions. Check the video link below for a fantastic presentation of the Gridfinity system, it's really well thought out and great for electronics workspace organization.
Here's a model for the DDD Wall Control project (this one is my own project). This system utilizes steel Wall Control pegboards to mount tools etc securely to a wall. Parts are printed and press-fit like legos to create modular organization solutions for wall mounting.
Gridfinity explanation (entertaining as hell, worth a watch)
robdejonge:
Does the new firmware or new device version (1241) still have the odd mV/V range situation?
dreiscal:
--- Quote from: UniSoft on July 01, 2022, 09:31:12 pm ---
--- Quote from: theHWcave on July 01, 2022, 08:06:32 am ---The 2nd sequence seems to run a program automatically...
it is possible that this expects inputs for calibration but it runs quite fast not waiting for inputs.
--- End quote ---
I guess that. That's why I never run it...
By the way, did you try to contact support to request for the new version of firmware?
I tried many time, but they no even reply :(
Does anyone know which TFT display they use?
I was looking for it but did not find with such a pinout.
D0...D7 - 8-bit Data
PB10 - CLK (Clock)
PB2 - DC (Data/Command)
PB1 - CS (Chip Select)
--- End quote ---
Any luck finding the display partnumber?
Mine got damaged and I cannot find a replacement anywhere. |O
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