bengineer19 / buckpsu Goto Github PK

I'm making a MPPT solar pump controller using a Drok buck PSU (200310) controlled with a UNO R3, as shown in the drawing at https://sidtupper.ca/wiring%20UNO%20R3%20to%20200310.jpg, and using the BuckPSU library. I'm stalled at not being able to communicate with the PSU. Running the library example, on a logic analyzer I can see that commands are getting to the PSU Rx pin but nothing is coming back on the Tx pin. I've tried obvious stuff like swapping Tx / Rx and various baud rates (9600 vs 4800) without success. I'd really appreciate hints on how to get past this.

Not connecting via serial to the raiser module, but replacing it.

https://github.com/rin67630/Drok-Juntek-on-steroids

Enjoy!

Hi your buck converter looks exactly like that one:

DKP6012 DC-DC CNC step-down module
Technical Parameters

Input voltage range: 10V to 75V
Output voltage adjustment range: 0-60V
Output current adjustment range: 0～12A  Output power:0-720W
Output voltage setting resolution: 10mV
Output current setting resolution: 10mA
Power Effect: CV less than 0.5% +10mV CC less than 1% +10mA
Load effect: CV less than 0.5% +10mV CC less than 1% +10mA
Output Ripple: < 50mVpp (Input 54V, Output 12V, Current 5A)
100Hz fluctuation transmission ratio: <1/10000
Typical efficiency: 94% (input 54V, output 30V, current 5A)
Voltage and current display accuracy: 10mV, 10mA
Voltage display error: ±1%+20mV
Current display error: ±2%+20mA
Response time: <50ms
Storage operation: M0 ~ M9 a total of 10 sets of parameter storage
Heat dissipation: Onboard radiator, air-cooled
Operating environment temperature: 0 ~ 40 °C
Storage environment temperature: -20 ~ 70 °C
Use environment: indoor use design, maximum humidity 80%
Size (length × width × height): 101 × 75 × 48 (mm)

Yeeco seems to be a seller name, I had to spend some time until I found your hardware under its usual name.
DROK is another reseller for these modules, being more common.

Apparently there is a "baby" version available as well:
DKP6008 DC-DC step-down buck module
with similar characteristics, just with 8A max current and only 65V max input.