So this load is built with 3 active pcb’s as well as a fourth passive one as a front panel. They are joined with these brass standoffs and I think the standoffs act as circuit paths as well because I see no wires between the different levels. In order to get the alignment right during assembly the designer of these pcbs, made these corners rounded while these ones are diagonally cut and you can see these features along an entire side. This is a neat solution overall because it saves cost and as long as the screws are tight these should provide adequate connection.
Tag: USB
Voltlog #135 – DIY Heated Seat Pad
In this video I am building a DIY heated seat cushion which I plan to use in the outdoors while flying my FPV plane.
Links for the items shown in this video:
- 5V USB Heating Pads: Ebay , Aliexpress.
- Seat warmers from: Ebay , Amazon.
- Dual Port USB Adapter Blitzwolf: Banggood .
Voltlog #120 – Mini DC Power Supply Review
So I guess a gadget like this is worth 10$ because you could replace that linear breadboard power supply with a more efficient one, which will give you voltage and current display as well as adjustable output.
Here are some images I took during the teardown of the mini power supply:
Checkout this power supply from the links below:
60W Electronic Dummy Load Battery Tester:
Voltlog #103 – InTheMail
Today we are taking a look at my electronics related mail, I’ve got a bunch of random stuff and links for all of them are provided below the video.
- Subwoofer pre-amplifier module
- TP5000 3.6/4.2V Lithium Charging Module
- DRV8833 Dual H-Bridge Driver Module
- L9110 Dual H-Bridge Driver Module
- USB Soldering Iron
- USB Desktop Cooling Fan
- Red Plastic Filter
- Thin Plastic Gel Filter Set
- SMD Capacitor/Resistor Sample Book
- Adjustable Current Source 4-20mA
- ESP-WROOM-02 ESP8266EX Module
- ESP32 Breakout PCB Module
- 30mm Kapton Adhesive Tape
- 48mm Aluminium Adhesive Tape
- U Aluminium Heatsink 48x48x80
- U Aluminium Heatsink 48x48x150
- 55x35x15mm Black Plastic Case
- 80x50x21mm White Plastic Case
- Electronic Junction Case with Vents
- 100x60x25 Black Plastic Case
- M3 Hex Nuts
- M3 x 4mm Philips Screw
- M3 Threaded Brass Insert
- M2 M3 DrillPro Tap
- Polishing Brass Cup
Voltlog #89 – SilverCrest LIDL USB Charger Teardown
Today we are taking a look at this SilverCrest USB charger that LIDL had on offer the past week here in Romania. I think it was sold for approximately 3.5 EUR which is not bad value for money if this turns out to be a safe to use charger.
Voltlog #86 – Limiting Iphone USB Charging To 500mA
It all started a few days ago when I was talking with a friend and he suggested, since we do most of our phone charging at night, why not charge them at a lower rate for increase battery life. As you may know, when you increase the charging current, charging happens faster at the expense of losing battery life over time, you get fewer battery cycles before it starts losing its capacity.
So I decided to build this small gadget, that goes between the usb output of my charger and the usb plug from my charging cable. In my case I have an Iphone and the charging current can be limited to 500mA by having a set of resistors on the USB data lines.
Links for the parts used to build the project:
Voltlog #81 – Qualcomm QuickCharge USB Charger Teardown
This USB charger is sold very cheap on GearBest.com and a viewer suggested I should get one and do a teardown to check the safety aspects. So I got one, and it looks decent inside, however clearly built down to a cost.
Voltlog #44 – 1W USB LED Lamp Mod Warm White
This is a short weekend video on how I changed the cold white led on my bedside reading lamp to a warm white one which is better for my eyes.
Voltlog #33 – Ublox 7 GPS USB to UART Conversion Hack
In this video I am hacking this vk-172 cheap usb gps module to use UART instead of USB. The module contains the ublox 7 chipset which is quite nice and it makes it much more useful having an UART interface.
PIO10 > pin 33 controls the hardware pin remapping feature
PIO10 low = UART remapped to PIO15 > pin 36 and PIO16 > pin 37
PIO10 high = UART on standard TX on PIO6 > pin 19 and RX on PIO7 > pin 18