DIY a pocket Bluetooth speaker (Part 2)

dcexpert

DIY a pocket Bluetooth speaker (Part 2) [Copy link]

 

The second version of the pocket Bluetooth speaker. This time I changed to a bigger speaker, and the sound quality is obviously better. The size has increased a little, but it is not really that big, about 6 x 5 x 5 cm.

The battery is from a Nokia BL5K found at the bottom of a box, and it is more than ten years old.

hellokitty_bean

Professional thumbs up! . . . . . . . . . . .

Thumbs up for being professional... DC has style

tagetage

This is hot melt glue.

dcexpert

tagetage posted on 2024-11-2 13:10 This is hot melt glue. .

Hot melt adhesive is more convenient

秦天qintian0303

tagetage posted on 2024-11-2 13:10 This is hot melt glue. .

It is estimated to be a temporary measure for preliminary verification

秦天qintian0303

There are a lot of buttons. How many functions are you going to add?

dcexpert

Qintianqintian0303 posted on 2024-11-2 23:21 There are quite a few buttons. How many functions are you going to add? Waiting for the wireless part

With Bluetooth and FM.

秦天qintian0303

dcexpert posted on 2024-11-2 23:43 With Bluetooth and FM.

This battery looks quite small. Will it last shorter when connected to Bluetooth?

dcexpert

Qintianqintian0303 posted on 2024-11-3 12:39 This battery looks quite small. Will it last shorter when connected to Bluetooth?

I haven't tested the usage time carefully. Although the battery has aged, 5-6 hours is no problem.

chunyang

The battery is still usable after such a long time, it is well preserved...

se7ens

The battery is amazing, it can still be used for more than 10 years. There is a reason why Nokia went bankrupt

Do I need to fly a separate antenna? Can't I just put the antenna on the board?

dcexpert

se7ens posted on 2024-11-6 17:30 The battery is amazing, it can still be used for more than 10 years. There is a reason why Nokia went bankrupt. They still need to fly a separate antenna to use it. Can't they just put the antenna on the board...

FM requires a separate antenna, the Bluetooth antenna is onboard.