VDI-RODERICO

[Wiltran]

Zolen

Hello Wiltran.
Zolen display work perfect with this configuration :
1-8 on data port, RD-RA5, WR-RC4, D / I-RC5, REST-RC6, CS-RC7, VDD- + 5V, VSS-GND, A + on the pcb A+


and with this hex code
ВДИ_СТ7567_П18Ф26К22_РР40

Thanks Zmaj ! I finally got it to work, and I am testing it now. I didnt have it wired correctly.

[reiv]

Is it possible to monitor battery voltage from 3,5-4,2V (one li-ion 18650) if yes, should I decrease R1-20k to smaller?

[roderico]

you can use the current values R1=20K and R2=6.8K, with these values the maximum input voltage is ~20V and the resolution 0.02V the corresponding voltage range for the 18650 battery would be 0.7 and 0.85V at pin 5 if you want to tune the values of R1 and R2 make sure not to exceed 5V at pin 5 for not to damage the microcontroller, then you can calibrate the battery monitor in the config menu with a voltmeter

[reiv]

Thanks for replay Roderico. I didn`t noticed that those two resistors are simply voltage divider. R1=20k,R2=6k8 shows always empty. Soe in my case to monitor one 18650 li-ion I use R1=1k8, R2=10k pot. surface mounted, works like a charm 3.5V=empty, 4.2V=full.

[roderico]

it's strange that it didn't work with 20K and 6K8 maybe you forgot to calibrate it, anyway if it works with 10K and 1K8 you only need to remember not to connect a battery with more than ~6V

[reiv]

Maybe it`s because of old soft for 16F690, can`t see any calibration option. I`m using one 18650 + step up dc conv. in tesoro md. soe there is no option to put other battery in battery basket.

[roderico]

ok I see this is for a very different vdi version so I don't know how the battery monitor is implemented, however I think version v1.x (you can find it somewhere in this thread) might be compatible with your pcb, in that firmware there is also an option for battery calibration where it says "Battery voltage:", if you change R1 and R2 you need to calibrate to read the right battery voltage, even if you are using 20K and 6.8K you might need to calibrate if the actual values of R1 and R2 differ a lot from those values

[Zwlad1896]

Hello friends, please share the latest version of the board, firmware and printed circuit board , if it doesn 't bother you.

[mva]

Greetings everyone!
Many thanks to Roderico and others!
I have a question for those who already have experience assembling a device: what combination of display and Pic-controller would you recommend assembling, given the prevalence of displays from online markets in China?
Thanks!