China Car DVR HDMI Port Uniqueness - Page 1
Forum section: electronics / general

author: Mechatrommer
author_rank: Super Contributor
timestamp: June 04, 2019, 12:56:22 pm
content: i bought a camera 2 years ago similar tothisbut with a micro HDMI port, so i thought i was lucky. this seldomly used since i planned to use this for pcb microscope camera project connected to HDMI monitor. until now when i tried to connect it to a monitor. it has some weird or unique behaviour so i dismantle the port to see what happened, see picture. if you can spot the uniqueness of this, then you are clever and deserve a bronze medal of eevvblog forum accolade. only bronze because this should not be that difficult. picture are top and bottom of the related pcb...

author: CJay
author_rank: Super Contributor
timestamp: June 04, 2019, 01:49:48 pm
content: Wireless transfer!!

author: Arjunan M R
author_rank: Regular Contributor
timestamp: June 04, 2019, 01:57:33 pm
content: Oops, forgot to put the pads for the hdmi port.Or is it designed that way,to wireless transfer the data.

author: Arjunan M R
author_rank: Regular Contributor
timestamp: June 04, 2019, 01:58:28 pm
content: Can you post a picture of the full pcb.

author: Arjunan M R
author_rank: Regular Contributor
timestamp: June 04, 2019, 02:00:32 pm
content: There is no space to put the pads for the port in hereWho designed this

author: Mechatrommer
author_rank: Super Contributor
timestamp: June 04, 2019, 02:14:48 pm
content: Quote from: Arjunan M R on June 04, 2019, 01:58:28 pmunfortunately i've reassembled the camera except the HDMI port. its decided to be commited to the shadow of the drawer. but attached is the biggest picture that i managed to snap. nothing too interesting, just a cheap camera sensor and a pcb with one special chip tagged as SJCAM24.00 or something, connected to microSD card (this one is real functioning with traces though) and some UI buttons and tft monitor.Quote from: Arjunan M R on June 04, 2019, 02:00:32 pmi doubt somebody was willing to import this to china and resell to the other world at cheap price. so i'm pretty certain, this was the thought of someone in china.btw, u'olls clever.

author: Arjunan M R
author_rank: Regular Contributor
timestamp: June 04, 2019, 02:17:42 pm
content: Why do they have to do that.They have designed the whole pcb and soldered all the parts then why don't just add some pads for the part:-//.And some traces.

author: Arjunan M R
author_rank: Regular Contributor
timestamp: June 04, 2019, 02:23:26 pm
content: Oh, chineese on the board.

author: Mechatrommer
author_rank: Super Contributor
timestamp: June 04, 2019, 02:24:50 pm
content: we've seen worse such as paperweight iron bars in a power bank. i dont think my case is too bad

author: Arjunan M R
author_rank: Regular Contributor
timestamp: June 04, 2019, 02:26:32 pm
content: Quote from: Mechatrommer on June 04, 2019, 02:24:50 pmThis is the worst I have ever seen.

author: Mechatrommer
author_rank: Super Contributor
timestamp: June 04, 2019, 02:33:39 pm
content: https://soranews24.com/2013/03/26/fake-chinese-external-batterys-insides-great-for-castles-not-so-good-for-power/sand in plastics... the manufacturer just forgot to advertise it as "agricultural" friendly power bank. life must be hard over there.

author: Arjunan M R
author_rank: Regular Contributor
timestamp: June 04, 2019, 02:36:54 pm
content: Quote from: Mechatrommer on June 04, 2019, 02:33:39 pmOnly one 18650 in a powerbankQuoteThat's worst than the HDMI port.

author: Stray Electron
author_rank: Super Contributor
timestamp: June 04, 2019, 04:42:41 pm
content: Quote from: Mechatrommer on June 04, 2019, 12:56:22 pmThat's only fitted so that they can advertise that it has an HDMI port. They never said that it works!

author: bitwelder
author_rank: Super Contributor
timestamp: June 05, 2019, 07:19:05 am
content: Quote from: Mechatrommer on June 04, 2019, 02:33:39 pmOr they got complains that the weight was unbalanced and it felt like a toy!