I am wanting to make my own DIY bluetooth speaker (first time electronics project) and I have found several good Youtube videos on the topic. However when it comes to finding the actual parts, I am struggling.

Many videos give different parts and I'm unsure of which would go together and if they are even compatible.

I like the design of THIS speaker in particular since there are few components that go into the build, however I cannot identify them and the Youtuber does not list their parts, just a link to their own page to sell the kit that is no longer functional.

I wondered if anybody could identify the specific part names/numbers?

I understand that they are as follows:

  • Bluetooth & amplifier chip
  • 18650 Li-Ion battery
  • Protection circuit (I have seen micro-USB input boards with protection on them, but am unsure if this is the same thing or whether this is simply protecting against surges during charging etc)
  • Step-up module
  • 2x 5W speakers
  • Capacitor
  • Micro-USB charger board

I have attached a screenshot of the video with all parts laid out enter image description here


closed as too broad by Marcus Müller, Bruce Abbott, DoxyLover, RoyC, Finbarr May 16 at 23:17

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  • \$\begingroup\$ The blue board that's mounted to a green board can be found here: aliexpress.com/w/wholesale-csr8645-bluetooth-module.html It's a csr8645 bluetooth audio module. \$\endgroup\$ – Glenn Willen May 10 at 19:49
  • \$\begingroup\$ The object furthest to the right is the step-up module (boost converter). You can find plenty of chinese-made ones by searching for "boost converter" or "step-up module" or similar on Amazon -- just look for something with matching input and output voltages to what you need, and physically similar in size (which will tend to correlate with current-handling capability, which I assume you don't have specs for.) \$\endgroup\$ – Glenn Willen May 10 at 19:53
  • 3
  • \$\begingroup\$ The best search terms I can find for the battery charger circuit (again on amazon) are something like "micro usb lithium battery circuit". That turns up dozens of examples (again you will want to match exact voltages and things yourself.) \$\endgroup\$ – Glenn Willen May 10 at 19:59
  • \$\begingroup\$ @JRE - Did you use a protector circuit for the battery at all? \$\endgroup\$ – physicsboy May 10 at 20:16

After many hours of scowering the web, Aliexpress and cross-referencing with Ebay, I found the following items corresponding to the image above:

  • \$\begingroup\$ That TP4056 mudule you found includes over discharge protection (it is the same one in the instrictable) ,you an use the out terminals instead of connecting the amplifiwr and boost converter via the protection board \$\endgroup\$ – Jasen May 14 at 22:39
  • \$\begingroup\$ @Jasen I'm not sure what you mean. Could you explain again? I'm a n00b at this stuff XD \$\endgroup\$ – physicsboy May 15 at 7:08
  • \$\begingroup\$ see the instructable link from the you-tube video \$\endgroup\$ – Jasen May 16 at 2:41

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