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odam2k 11/09/2019
What acool device. I strapped 4 AA rechargeable batteries to it, and just carry it around in my pocket... It's actually louder than plugging directly into my computer, and while thereis a tiny amount of hiss and pop whenthere is no music, the sound is very good.
M28 bluetooth 4.2 Audio Receiver Module With 3.5mm Audio Interface Lossless Car Speaker Headphone Amplifier Board Wireless Refit
US$1.50 US$9.99
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M28 bluetooth 4.2 Audio Receiver Module With 3.5mm Audio Interface Lossless Car Speaker Headphone Amplifier Board Wireless Refit
US$1.50 US$9.99

Q: It has built in battery??

Asked by Alex Da on 2019-09-12 06:33:38

odam2k There is no battery built in, but you can use a 3.7v Li Ion battery, or any 5v source. I use 4 AA rechargeable batteries in a plastic holder (4.8v)

2019-09-12 11:09:24 Helpful (0)
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odam2k 30/12/2018
As buttons go, these are, well, buttons... They work well, and of course are sized to fit perfboard, although I don't think the legs are long enough for use on a breadboard.
Geekcreit® 100pcs Mini Micro Momentary Tactile Touch Switch Push Button DIP P4 Normally Open
US$2.99 US$4.59
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odam2k 30/12/2018
All that memory! All those Analog Pins! All thos Digital Pins! This is an Arduino on steroids... Oh, add an onboard ESP8266 WiFi module, and this is an absolute winner! The ESP8266 can be programmed just like the Arduino, using the Arduino IDE, same language you're already used to... Connect your project to your home network, or the internet, easily...
Geekcreit Mega +WiFi R3 Module ATmega2560+ESP8266 32Mb Memory USB-TTL CH340G
US$20.99 US$25.99
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odam2k 30/12/2018
Nothing fancy, but they work!
100pcs DuPont Jumper Connectors Male Terminal Male Reed DuPont Plug Core Homemade Bread Wire Terminal
US$2.99 US$3.49
0
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odam2k 30/12/2018
I haven't used one yet, but I'm looking at replacing resistive sensors with thse to avoid the corrosion. These capacitive sensors apparently provide higher quality data as well.
Capacitive Soil Moisture Sensor Not Easy To Corrode Wide Voltage Monitor Module
US$1.39 US$9.99
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odam2k 30/12/2018
This wire is perfect for DIY projects on a perfboard. The wire fits through the holes, and is single strand solid core so it's easy to solder, even though it's tiny... There is plenty of wire on the spool, in 8 different colors. Like I said, it's perfect :) You can't go wrong with this.
DANIU 250M 8-Wire Colored Insulated P/N B-30-1000 30AWG Wire Wrapping Cable Wrap Reel
US$10.65 US$14.99
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odam2k 30/12/2018
Add some visuals to your project, simple I2C interface makes it simple to add to your project.
Geekcreit® IIC / I2C 1602 Blue Backlight LCD Display Screen Module Geekcreit for Arduino - products that work with official Arduino boards
US$2.00 US$9.99
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odam2k 30/12/2018
What a great deal, and the quality seems ok. Keep a bunch of these around...
DANIU 10 Pairs 4mm Terminal Banana Plug Socket Jack Connectors Instrument Light Tools Black and Red
US$8.99 US$10.99
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odam2k 30/12/2018
Perfect size, you can cut to fit any project you are doing. I use a bandsaw.
5Pcs 90*150mm FR-4 Double-Side Prototype PCB Printed Circuit Board
US$14.99 US$17.99
0
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odam2k 30/12/2018
Nothing fancy, but they work!
200pcs 2.54mm Female Pin Long Dupont Head Reed Connector
US$3.99 US$8.99
0
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odam2k 01/11/2018
It should be noted that this adapter board does not provide a way to put the module into flash mode, so you cannot program your ESP-8266 with this adapter.
ESP8266 ESP-01 WIFI Transceiver Wireless Module With Adapter Module
US$9.99 US$11.99
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odam2k 24/09/2018
Wasn't sure because of the price, but I'm happy so far, it has a lot more ooomph than the 40A airplane ESC I was forced to use temporarily :)
Waterproof Brushed ESC 60A 3S with Fan 5V 3A BEC T-Plug for 1/10 RC Car Vehicles Model Parts
US$11.99 US$20.99
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