Tom
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5pcs 1-5mm 4 Flute End Mill Milling Cutter CNC Tools Set
US$14.91 US$22.99

Q: What is the shank diameter?

Asked by Tom on 2022-01-08 04:36:58
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Tom 10/05/2021
It took a few minutes from initial power up to get a fix. Hooked it up to my pc using serial to USB converter and used putty to view the output at 9600.
Beitian Smallest Mini Dual GLONASS+GPS BN-180 Micro Double GPS Antenna Module UART TTL For CC3D F3 RC Drone Airplane
US$18.99 US$51.59
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Tom 10/05/2021
You have to download the drivers using the links supplied on a card in the package. We want to use scope for imaging motion picture film and the lowest magnification, 50x, can see a 16mm film at full width. It looks like capturing 8mm will be no problem at ~120x magnification. Once the drivers are installed it can be used with Open Broadcast Studio (OSB) to record high resolution videos at 30fps.
5MP 8 LED USB Digital Camera Microscope Magnifier Lift Stand 1X-500X 5V DC Video
US$20.69 US$27.99
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Tom 08/05/2021
I never used the US warehouse before and was surprised how fast it arrived. Both units came preprogrammed, one as a receiver and the other as a transmitter. They worked out of the box . Be sure to connect the antennas before powering them up.
2Pcs LILYGO TTGO LORA32 915Mhz ESP32 LoRa OLED 0.96 Inch Blue Display bluetooth WIFI ESP-32 Development Board Module With Antenna
US$44.99 US$48.00
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Tom 15/08/2020
The transmitter frequency is relatively easy to set and covers full band. Sound quality is good. Haven't tried the uSD card yet. The bridge wire is long, so it gives you a lot of flexibility in placing the display. I had a Sirius satellite radio which had an FM antenna sub-miniature phone plug output which runs to the radio antenna on the back window. I would like to connects a small coil so the radiated FM would be sent to the window. So far very happy with the unit.
Baseus Car bluetooth 5.0 FM Transmitter 2-Port USB Charger QC3.0 Quick Charge Digital Display bluetooth Audio Adapter Car Kit With Microphone Handsfree Call 3.5mm Aux Input Music Play
US$16.99 US$27.99
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Tom 15/08/2020
This kit contains most of the electronics needed to build an IR remote controlled device. I have gotten the 16 x 2 LCD display working using the provide 74HC595. The IR receiver and remote working and the stepping motor. I haven't worked with the other display devices, but so far everything worked. Great kit. Could use some male to female Dupont wires to connect to the stepper motor driver. Stepper motor needs independent 5V power if you want it to have any torque.
Geekcreit® UNOR3 Basic Starter Kits No Battery Version for Arduino Carton Box Packaging(Arduino-Compatible) - Variations And Clones Which Are Software And Hardware Compatible
US$27.99 US$35.99
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Tom 15/08/2020
Great light, love that it dims. I use a can lid attached to the magnetic base to use it as desk lamp. Be sure to tighten the magnet by screwing into the base, so it doesn't wiggle.
Enusic™ COB Work Light Foldable Rechargeable Stepless Dimming Hand Torch Inspection Magnetic Lamp
US$17.59 US$24.19
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Tom 06/04/2020
Used these clips with LCD transistor tester for the voltage input.
10pcs Multimeter Wire Lead Test Hook Clip Electronic Mini Test Hook
US$7.19 US$9.99
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Tom 06/04/2020
amazing little device. Nice to double check components before inserting into PCB and soldering.
GM328A LCD Transistor Tester Diode ESR Meter PWM Square Wave Generator Soldered Module
US$39.99 US$23.99
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Tom 06/04/2020
Works, haven't text it at maximum current output yet.
Excellway® 3-12V 5A 60W AC/DC Adapter Switching Power Supply Regulated Power Adapter Display
US$10.85 US$27.99
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Thomas 17/02/2019
The instructions and picture in the product description do not tell you the correct way of winding the L1 primary coil. The picture shows counter clockwise winding up from the connection lower hole for L1. In this configuration, LED 1 didn't light. I found a review that suggested reversing the winding would make it work. Winding it clockwise up from the bottom made it work correctly. If you want to make sparks from the unconnected secondary coil, I recommend adding a small ball or crimp terminal to the end off the wire, because thin wire melts when it arcs. Also be careful of the L1 winding wire near HV wire, even the leads of the neon bulb, because the insulation isn't HV resistant and an arc from the neon bulb burnt through it. Mine seems to "work" with input voltage as low as 12 VDC input.
Geekcreit® DIY Mini Tesla Coil Module Unassembled 15W DC 15-24V 2A Plasma Speaker Electronic Kit
US$9.39 US$6.54
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Tom 21/11/2019
The kit is pretty complete except no wires or battery clips are provided.
Bakeey 5x18650 Dual USB Solar Energy Camping Flashlight 20000mAh Battery Case Power Bank Box
US$5.70 US$17.99
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Tom 15/09/2019
The unit gooks good, the brass finished base plate , with the brass flywheel and motor mount. It didn't run on my first attempt. Took apart displacement piston and had to adjust the large plastic washer so it is properly centered at the very edge of the tube. I changed back to the glass cylinder for the heated end, so I could see the alignment better. The cylinders are just pressed onto 2 rubber washers, so you have to adjust them to get smooth operation. After that the engine ran like a champ. The flame was a little too large, so I blew it out and the engine ran for almost a minute without the flame. Still have to see how much electricity it can generate.
Hot Air Stirling Engine Model Science Toy Gift Collection
US$19.99 US$29.99
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3DR Radio Telemetry 915MHZ Module For APM APM2
US$19.51 US$40.83

Q: What are the power supply requirements for the TTL UART transceiver? Will it come with detailed manual with full list of AT and RT commands?

Asked by tombelpasso on 2019-08-18 02:51:39

dengjunbao Output Power: 100mW (20dBm), adjustable between 1-20dBm

2019-11-01 07:09:12 Helpful (0)
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Tom 31/10/2019
The microscope camera works well. Picture is bright and clear. Haven't yet figured out how to control either optical nor digital zoom.
DANIU USB 8 LED 50X-500X 2MP Digital Microscope Borescope Magnifier Video Camera
US$17.99 US$23.99
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Geekcreit® 3.5 inch TFT LCD Touch Screen + Protective Case + Touch Pen Kit For Raspberry Pi 3B+/3B/2B
US$16.86 US$26.99

Q: Can the back light be turned on/off? If so is it software controllable?

Asked by tombelpasso on 2019-07-10 01:58:28

ZZZip No,it cannot. It is hard-wired to a fixed brightness, and stays lit as long as power is connected to the Raspberry Pi. This is, in my opinion, the biggest issue with this display.

2019-07-16 01:06:04 Helpful (0)
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Thomas 17/02/2019
The one I received didn't have the red handle. Didn't notice it even had one until I saw the picture for the review, so didn't expect it anyway. Other than that it works great.
Drillpro 6mm Automatic Center Pin Punch Spring Loaded Marking Starting Holes Tool
US$9.99 US$7.99
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Tom 01/10/2019
I actually only really wanted the collets, which fit my 2 D cell battery power drill. I would like to find a 3D print files for putting the motor in a case so I can use the new motor as another drill. Both the collets and the motor are great.
DC 12V 500mA Mirco Motor with 5pcs 0.5-3.0mm Drill Collet Electric PCB Tool Set
US$6.81 US$13.99
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Tom 04/09/2019
This little turbine will spin up, just by blowing into it. Quality seems to be very good.
Microcosm Mini Engine High Speed Turbine Model DIY Project Part
US$28.69 US$51.99
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