Random Bits

New KY 008 Laser Transmitter Module for arduino AVR PIC Free Shipping.jpg

New KY-008 Laser Transmitter Module for arduino AVR PIC Free Shipping


$0.42
Free shipping
9988 in stock


Just a laser pointer. Contains all the current limiting driver components you need, so just supply it 5V and start burning people's eyes out (note: please don't do that.)
Free shipping LTC 3588 Energy Harvester Breakout LTC3588 1 module.jpg

Free shipping! LTC-3588 Energy Harvester Breakout - LTC3588-1 module


$11.00
Free shipping
995 in stock


Designed to take the brief high voltage spikes from impacts on piezo elements, to generate a smooth & regulated low voltage DC supply at 10-100mA. Designed to harvest power from vibration or any rapid changes of direction.
Hot Selling 1PC 5A Adjustable Power CC CV Step down Charge Module LED Driver Voltmeter Ammeter.jpg

Hot Selling 1PC 5A Adjustable Power CC/CV Step-down Charge Module LED Driver Voltmeter Ammeter Constant current constant voltage


$4.50
Free shipping
99995 in stock


These are great bang for buck, up to 5A of adjustable voltage, adjustable current power supply, with built-in voltage and current meter. These are actually smaller than I initially expected, and although the trimpots are a little annoying to use, I cant fault this unit for features or price.
1pcs Smart Electronics GPRS module GSM module A6 SMS Speech board wireless data transmission adapter plate.jpg

1pcs Smart Electronics GPRS module GSM module A6 \ SMS \ Speech \ board \ wireless data transmission adapter plate


$4.07
+ $0.32 shipping
9997 in stock


These use the 2G mobile network, which will be shutdown in coming years in most countries, which has dropped the price of these modules like a stone. In most areas you still have at least several years of working time, possibly more, so a great cheap way to add mobile communications to your projects.
Free shipping GY Digispark kickstarter miniature minimal development board ATTINY85 module for Arduino usb.jpg

Free shipping! GY Digispark kickstarter miniature minimal development board ATTINY85 module for Arduino usb


$1.30
Free shipping
974 in stock


Another of the ATTiny85 DigiSpark boards. These use *SOFTWARE* based USB, but do a surprisingly good job of that.

Converters & Printer bits

1pcs PWM DC 6V 12V 24V 28V 3A Motor Speed Control New Switch Controller.jpg

1pcs PWM DC 6V 12V 24V 28V 3A Motor Speed Control New Switch Controller


$1.96
Free shipping
996 in stock


While the modules i've been linking lately are great for adding computer control over fans, small pumps, and other motors or simple loads, sometimes you don't want anything so complicated, just a knob you can turn something up and down with. Well here it is, nice & cheap.
Free shipping 1PCS LOT GY Digispark kickstarter miniature minimal development board ATTINY85 module for Arduino usb.jpg

Free shipping 1PCS/LOT GY Digispark kickstarter miniature minimal development board ATTINY85 module for Arduino usb


$1.30
Free shipping
986 in stock


Similar to the module I've linked previously, this is an ATTiny85 with a Micro-USB connector, ready to embed into your smaller projects to add usb and/or microcontroller features, for under 2 bucks!
Mini USB Electric Soldering Iron Portable Soldering Gun with LED Indicator Hot Iron Welding High Quality.jpg

Mini USB Electric Soldering Iron Portable Soldering Gun with LED Indicator Hot Iron Welding High Quality Heating Tool 5V 8W


$5.23
Free shipping
607 in stock


Last week I linked a nice cheap soldering iron for hobby electronics use, this one is not that. It will be rather hopeless at any real soldering work, and will be useful only in emergencies for such purposes. However I have my eyes set on it as a cheap 3D print finishing tool, which I can run directly from my printer. Professional versions of such tools are $50-200 each, so this would be a much cheaper alternative for what is essentially identical. Melt & sculpt PLA, ABS and most other 3D printable materials, to touch up fine detail or repair failed prints.
New Hot XD 24 DC DC 400W 6 40V to 8v 80v 10A Boost Converter Step.jpg

New Hot XD-24 DC-DC 400W 6-40V to 8v-80v 10A Boost Converter Step-up Module Power Supply


$17.28
Free shipping
2996 in stock


If you still haven't built yourself a bench supply yet, or perhaps want something to play around with high power LEDs or such, this supply can be invaluable. Not only can it boost 6-40V up to 8-80V, at up to 10A, it also includes a digital controller with push button interface, and most important of all, a serial interface. Yes, that's right, you can control this power supply remotely from a microcontroller or PC. I'll leaving finding the use to you, but it seems quite a handy kit.
usb electronic load adjustable constant current aging resistor 35w battery voltage capacity tester qualcomm qc2 0.jpg

usb electronic load adjustable constant current aging resistor 35w battery voltage capacity tester qualcomm qc2.0/3.0 voltmeter


$16.16
Free shipping
938 in stock


If you want to test the capacity of batteries or power supplies, you need a good variable load. As the output of batteries and most power supplies will vary based on the current output, verifying a design over a range of loads is very important. With this unit you can dial up the current you'd like it to draw, in 10mA increments, at up to 3A. It has just about every USB connector known to man available to test USB chargers and power banks, which also supports 9/12/20V Qualcomm fast charging, along with a set of screw terminals for non-usb supplies 3-21V. It will monitor the voltage & current output, the total power drained, and can go further to eg test the ESR of your supply.
3D Printer Parts MK8 dual extruder aluminium alloy Double Nozzle Throat Fixed Block for Makerbot Double.jpg

3D Printer Parts MK8 dual extruder aluminium alloy Double Nozzle Throat Fixed Block for Makerbot Double Print Head


$4.89
Free shipping
999991 in stock


The first of the 3D printer items, this is a simple bracket that will allow you to bolt a second extruder motor & hot end, directly beside an existing MK8. No other changes to the mounts are required, just add the wiring for the new motor, heater & thermal probe, and a 5th stepper motor driver module to your controller for the extra motor. (see below)
3d printer nozzle Accessory Kit direct extruder MK8 short distance latest update For MK8 extruder kit.jpg

3d printer nozzle Accessory Kit direct extruder MK8 short distance latest update For MK8 extruder kit


$22.50
Free shipping
952 in stock


This is a new extruder assembly, complete with motor & hot end, just like the one bundled with the 3D printer I linked last week. It makes for a perfect companion with the above mount to convert your printer into a dual extruder.
3d printer parts 5pcs lot 3D Printer Stepstick Drv8825 Stepper Motor Driver Reprap 4 PCB Board.jpg

3d printer parts 5pcs/lot 3D Printer Stepstick Drv8825 Stepper Motor Driver Reprap 4 PCB Board + Free shipping replace A4988


$6.75
Free shipping
8882 in stock


This is a set of 5x DRV8825 modules, which are Stepper motor drivers that connect to the Ramps 1.4 board included with the 3D printer. The printer comes with 4x A4988 drivers, which while adequeate, support at best 1/8th microstepping, and the lack of a 5th driver means you cannot add a second extruder. These DRV8825 modules support up to 1/32 microstepping, effectively quadrupling your printer's resolution. They can also handle higher currents, at lower temperatures, and there's a full set here for your X/Y/Z axes and two extruders. A wise early upgrade to any 3D printer.
5pcs lot 3D Printer Nozzle Mixed Sizes 0 2mm 0 3mm 0 4mm 0 5mm For.jpg

5pcs/lot 3D Printer Nozzle Mixed Sizes 0.2mm/0.3mm/0.4mm/0.5mm For 1.75mm/3mm Extruder Print Head Brass Nozzle MK8 Makerbot


$1.28
Free shipping
999995 in stock


Cheap and simple, this is a set of 5 replacement nozzles for your 3D printer. Don't spend $20 per nozzle or $50 for a hardened one, grab a few spares, put one aside for using damaging filaments like glow in the dark or carbon fibre, and open your options for quality vs speed by having a range of nozzles at hand.

Soldering on the cheap

ESI S60 220V 60W Internal Heating Adjustable Temperature Electric Solder Soldering Iron Welding with eu conversion.jpg

ESI-S60 220V 60W Internal Heating Adjustable Temperature Electric Solder Soldering Iron Welding with eu conversion plug


$6.70
Free shipping
97 in stock


We all have to start somewhere, often a cheap and nasty soldering iron from your local store. You plug it in and it gets hot. No temperature control, no fancy earthing strap, and it takes a good 10 minutes to get ready to solder. If this sounds like you, STOP! For 6 bucks this is a temperature adjustable, 60W iron. It heats up in under a minute, and the temperature control will feel like cheating in improving your consistency and reducing damage to boards/components. While it's still not as good as a Hakko/Aoyue/etc soldering station, it's what I consider to be the bare minimum anyone should use. Anything less is just making life hard on yourself.
0 6mm 50G 60 40 Tin Lead Rosin Core Solder Flux Soldering Welding Reel.jpg

0.6mm 50G 60/40 Tin Lead Rosin Core Solder Flux Soldering Welding Reel


$1.57
Free shipping
9628 in stock


With a shiny new soldering iron, how about some shiny new solder. This the good stuff - lower melting point, plenty of lead, very easy to work with and hard wearing. For those concerned about lead-free solder and the health issues from using lead, the simple truth is that's not a concern. There are no documented health issues from lead based soldering, the problem comes in when you discard the device and it ends up in landfill, and the lead leeches into the environment. This is why it is not generally used in mass production. In terms of using the solder for small scale hobby work, the fumes from lead-free solder are far more carcinogenic and unhealthy. For rework/repair purposes, which essentially amounts to recycling, it's well worth making life easy on yourself by using the good stuff, decreasing the chance of you damaging the device and improving your odds of repairing it.
Best Price Solder Iron Metal Rectangle Stand Holder Base and Solder Support Station Soldering Iron Safety.jpg

Best Price Solder Iron Metal Rectangle Stand Holder Base and Solder Support Station Soldering Iron Safety Protecting Base


$2.65
Free shipping
986 in stock


Just a cheap and simple stand for your soldering iron - If you don't have one, they just generally make life easier, help prevent accidents, etc. For many people its really the main difference between a cheap mains iron and a bench soldering station, just having a nice `home` for the iron.
You don't need an $80 controller unit on your bench for that, These do fine :)
Newest Hot Sale 1 5M 2 0mm CP 2016 Thickness Welding Wires Practical Desoldering Braid Solder.jpg

Newest Hot Sale 1.5M 2.0mm CP-2016 Thickness Welding Wires Practical Desoldering Braid Solder Remover Wick


$0.94
Free shipping
799 in stock


With solder going on, there's always the chance you'll want to take some off. This desoldering braid just loves solder, when you heat it with your iron and press it into the joint, the solder will wick away and you'll be left with a near perfectly clean surface to start again with. Also comes in handy for some surface mount parts with long rows of pins - you can connect them all to the board with a huge solder blob, then wick away all the un-needed solder with the braid, leaving just the bit under each pin to keep them connected and all the joints looking perfect.
WSFS Hot Solder Soldering Paste 10cc Flux Grease RMA223 RMA 223.jpg

WSFS Hot Solder Soldering Paste 10cc Flux Grease RMA223 RMA-223


$0.67
Free shipping
467 in stock


Last item for the soldering, flux is another one of those tools you don't really `need`, since the solder already contains flux inside, but oh boy can it help. A bit of flux smeared onto the joint you're about to solder, will help clean the surfaces and allow the solder to stick properly. It also helps to use some on the desoldering braid to make it even more effective.
1pcs Smart Electronics ESP 12F WeMos D1 WiFi uno based ESP8266 shield for arduino Compatible IDE.jpg

1pcs Smart Electronics ESP-12F WeMos D1 WiFi uno based ESP8266 shield for arduino Compatible IDE


$4.95
Free shipping
9997 in stock


While I generally have fairly little time for the Arduino hardware these days, with its poor value/performance compared to competitors, which still support the Arduino software chain, the platform does still have one huge advantage, the huge ecosystem of Arduino shields that are available. We'll now we've ported those too! :D This is the latest ESP-12F with enhanced WiFi range, in an Arduino form factor, compatible with any 3.3V safe Arduino shields.
2016 He3d XI3 High Precision reprap prusa i3 3d printer DIY kit full acrylic frame support.jpg

2016 He3d- XI3 High Precision reprap prusa i3 3d printer DIY kit full acrylic frame support multi material


$218.00
Free shipping
981 in stock


3D printing is becoming increasingly popular, and i'll soon be starting to post printer related deals. Unfortunately there is quite a bit of variation between models of printer, so this is the one I use, and what most of the parts I suggest will be designed to work with. I can recommend it as a cheap, reliable, and impressively performing unit - It made for a great start for me to get into printing.

210x210x210mm build area, Aluminium heated build plate with Kapton tape to use as an adhesive surface for printing on to, and contains everything you need to plug it into a USB port and start printing. Requires 1.75mm plastic filament, i'd recommend PLA for those starting out.

Useful Bits

DC ATX 160W 160W high power DC 12V 24Pin ATX switch PSU Car Auto mini ITX.jpg

DC-ATX-160W 160W high power DC 12V 24Pin ATX switch PSU Car Auto mini ITX ATX Power Supply


$12.65
Free shipping
986 in stock


Many years ago I spent a lot of time & effort designing my own Car-PC power supply. It worked, but with small issues like poor standby consumption, high heat output, and poor output while the car was off. This thing could've been the answer to my prayers. A small, cheap, highly efficient power supply to regulate 12V, 5V and 3.3V rails to power a computer motherboard, and hard drive(s). These are also becoming increasingly popular for solar enthusiasts, so you can run a pc directly from a simple 12V solar panel + charger + battery system.
1pcs lot 12V Mini 3 Keys Single Color LED Controller Brightness Dimmer for led 3528 5050.jpg

1pcs/lot 12V Mini 3 Keys Single Color LED Controller Brightness Dimmer for led 3528 5050 strip light Free shipping


$0.49
Free shipping
974 in stock


These are a neat little trick. While they're designed for LEDs, they'll really handle any resistive loads up to 72W, or inductive loads up to about 30W, and provide you a cheap, small, and efficent dimmer/speed control with on/off switch, for most 12V systems. Great for fans, lights (of any kind), and more.
Free shipping 10 sets ht5 08 2pin Terminal plug type 300V 10A 5 08mm pitch connector.jpg

Free shipping 10 sets ht5.08 2pin Terminal plug type 300V 10A 5.08mm pitch connector pcb screw terminal block connector


$1.60
Free shipping
964 in stock


Plug in screw terminals. remove the jack, screw your wires into the block with ease, then just plug them in. Probably my favourate way to attach random wires to projects i've built into enclosures. Well worth having on hand for when you need em.
Free shipping 5 sets ht5 08 6pin Terminal plug type 300V 10A 5 08mm pitch connector.jpg

Free shipping 5 sets ht5.08 6pin Terminal plug type 300V 10A 5.08mm pitch connector pcb screw terminal block connector


$2.44
Free shipping
998 in stock


A 6 pin version of the earlier connectors, for when you just need moar. Of course a variety of sizes are available, but I can't give you everything now can I ? :P
433Mhz HC 12 SI4463 Wireless Serial Port Module 1000m Replace Bluetooth NEW.jpg

433Mhz HC-12 SI4463 Wireless Serial Port Module 1000m Replace Bluetooth NEW


$4.56
Free shipping
826 in stock


I haven't used these things at all, but they seem like a great cheap alternative to the newer LoRa radios. 433MHz is an unlicenced band in most countries, so these are one of the safer random china long range radio transmitter units to try, although you should always check your local laws.
16 Keys Capacitive touch TTP229 module I2C bus .jpg

16 Keys Capacitive touch TTP229 module. I2C bus.


$1.85
Free shipping
486 in stock


I've helped several people lately working on capacitive touch projects. It's surprisingly popular for people to attempt to build these using a bare arduino or such, with no specific capacitive touch related hardware. While this can work, oh boy you guys are making things hard on yourselves. A module like this gives a very clean response, for a large number of keys, with next to no effort from the microcontroller using it. For under 2 bucks, save yourself the headaches and grab one.
Free shipping 1pcs HC SR501 HCSR501 Adjust IR Pyroelectric Infrared PIR Motion Sensor Detector Module.jpg

Free shipping 1pcs HC-SR501 HCSR501 Adjust IR Pyroelectric Infrared PIR Motion Sensor Detector Module


$1.29
Free shipping
9999 in stock


Passive infrared sensors are old & simple technology these days, but they can still be amazingly useful sensors. This is an easy to use, arduino-friendly module to play with your own alarm or monitoring systems.
With housing 5A constant voltage constant current buck LED driver module lithium rechargeable power display blue.jpg

With housing 5A constant voltage constant current buck LED driver module lithium rechargeable power display blue


$8.90
Free shipping
50 in stock


A bench power supply is a huge advantage to any hobbyist, both for testing parts in an easy, controlled way, charging random batteries, and in preventing short circuits from doing serious harm to their projects while playing around with designs on a breadboard or such. This unit could be a great cheap solution for those on a budget. It requires a DC voltage input, anything above 5V will do but preferably 24VDC, and it will give you a current & voltage limited supply with a neat display and funky clear enclosure. The only real downsides are the trimpots for adjusting the voltage & current require a screwdriver, and the regulation isnt as clean as a linear bench supply (but still perfectly adequate for most hobby tasks)
DP50V5A Buck Adjustable DC Power Supply Module With Integrated Voltmeter Ammeter Color Display.jpg

DP50V5A Buck Adjustable DC Power Supply Module With Integrated Voltmeter Ammeter Color Display


$28.00
Free shipping
9993 in stock


This unit is a step up from the previous. With the same current rating, it prefers a 48VDC supply (although will still operate fine from 5V if needed), and has a much cleaner display, controls, and better monitoring capabilities. The regulation is also marginally better, although still not up to linear quality. A very clean solution if you can build it into your work area.
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