Metal Plastic Electronics

Fixing a KiCad ngspice error running on OpenSUSE Tumbleweed. Error “Failed to load shared library libngspice.so.0.0.0 undefined symbol history_file”. Rebuilding the ngspice shared library and replacing the defective one.

Testing the CD Welder with the full 6 capacitors. How to handle the inductive kickback. Dual pulse put on hold until mosfets are more readily available. Link to mosfet switch module: https://rumble.com/vgwaqx-controlling-the-flow-the-allure-of-mosfets-cd-welder-project-part-4.html

Rebuilding a Samsung POWERbot 7010 robot vacuum Li-ion battery pack. Replacing the 6 Samsung ICR18650-22P M cells with 6 Sanyo NCR18650GA cells.

Getting the CD welder ready for testing. Assembling all the parts. Connecting all six mosfet switch boards, capacitors and wiring it up.

Building the new power switch board for the capacitor discharge welder I’m building. Going over the schematic, board layout and high current connections to the board.

Making a tray to hold the capacitors, busbar and power mosfet switch boards for my capacitor discharge welder. Initial assembly of the busbar.

Spot-weld testing some 0.21 mm thick nickel battery tab strip. Weld energy from 50 joules to over 200 joules tested. With a constant tip pressure provided by my motorized weld head project.

Testing these serial OLED modules in all three of their serial modes. I2C, 3 wire SPI and 4 wire SPI. Showing which resistors to put in and which to remove to switch to the different modes. Link to MPLAB X dsPIC33CK256MP206 project to interface to these modules: https://github.com/mlplel/SSD1306Serial.X

Review and disassembly of the Almhs part number 11-0043A, “Mini Universal Bender” that is sold by Amazon. Bend a few things with it and do some modification that improve the bender.

Spot-weld testing some 0.15 mm thick nickel battery tab strip. Weld energy from 25 joules to over 200 joules tested. With a constant tip pressure provided by my motorized weld head project.

CD welder project power switch test board. Layout, operation and parts used.

Building a capacitor discharge welder. Trying to make the switches and capacitors to be modular to some extent. The complications that entails, and can they be overcome easily. Intro into the project and some initial test info.

Spot-weld testing some 0.1 mm thick nickel battery tab strip. Weld energy from less than 20 joules to over 100 joules tested. With a constant tip pressure provided by my motorized weld head project. Weld Head Project: https://rumble.com/vchoxl-motorized-weld-head-project-part1-intro.html

Going over problems that are interfering with the working of the machine.

The PC boards and schematic used to develop and test the idea of using strain gauges to control weld tip pressure.

Machining a block to hold a spring loaded nut to connect the motor to the welding tip holder.

Rebuilding a Dremel 855 Li-ion 10.8 Volt battery pack.

DeWalt Ni-Cd battery pack rebuild

Project to build a motorized weld head for capacitive discharge spot welder. The main use being spot welding tabs to batteries to make battery packs.

Machining a block of aluminum into a load cell. Mounting strain gauges to form a wheatstone bridge. This is what the weld tip pressure will be measured with.