« previous next »
Pages: [1]   Go Down

Author Topic: 3 Digits Seven Segment Voltmeter - Driver Chip  (Read 785 times)

0 Members and 1 Guest are viewing this topic.

Offline 2XTopic starter

  • Frequent Contributor
  • **
  • Posts: 334
  • Country: gr
3 Digits Seven Segment Voltmeter - Driver Chip
« on: May 22, 2020, 08:18:49 pm »
Hello,
I have the below voltmeter but doesn't measuse (it lights only two segments). The 5V voltage regulator works ok at the back of the PCB. The chip has erased the letters on it and I don't have any part number to check it or replace it. Does anyone knows what is this chip/part number (or it is a microcontroller)?

Logged
 

Offline Gyro

  • Super Contributor
  • ***
  • Posts: 9911
  • Country: gb
Re: 3 Digits Seven Segment Voltmeter - Driver Chip
« Reply #1 on: May 22, 2020, 08:23:15 pm »
Yes, it's likely to be a programmed microcontroller, using the on-chip ADC.
Logged
Best Regards, Chris
 

Online coromonadalix

  • Super Contributor
  • ***
  • Posts: 6559
  • Country: ca
Re: 3 Digits Seven Segment Voltmeter - Driver Chip
« Reply #2 on: May 23, 2020, 02:54:17 am »
even if you have the chip,  you will need the firmware to program it ??  and a way to connect it to a programmer ??     and thess display are sold pretty cheap nowadays ...
Logged
 

Offline 2XTopic starter

  • Frequent Contributor
  • **
  • Posts: 334
  • Country: gr
Re: 3 Digits Seven Segment Voltmeter - Driver Chip
« Reply #3 on: July 04, 2020, 10:31:52 pm »
Logged
 
Pages: [1]   Go Up
« previous next »

Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf

 


EEVblog Main Site EEVblog on Youtube EEVblog on Twitter EEVblog on Facebook EEVblog on Odysee