003 - ICL8068 Function Generator

Following on from the disappointment of the XR2206 function generator, I have a go at building a kit using the ICL8068. This is a chip that was at least released in this millennium, albeit over 20 years ago. This is a bit different to the XR2206, but works in basically the sample way. The supporting circuitry is a bit more complex, mostly because of the power requirements, and the inclusion of an op amp to control the amplitude of the sine or triangle wave outputs. There is also a square wave output.

The original kit I bought is no longer available, but here is a link to a similar kit on AliExpress: https://s.click.aliexpress.com/e/_DdO... (affiliate link).
The kit came with no instructions or schematic, so the instructible at https://www.instructables.com/Getting... came in really useful. Their kit was not identical to mine, so there was an extra resistor and LED, but by process of elimination, I managed to work out which was the extra resistor.
This is my first time soldering on video, so any suggestions would be appreciated! The soldering part of the build took just under an hour, but someone more experienced than me could probably cut that time in half.

More information can be found at https://hackingandmaking.com/index.ph...

Amazon links:Original DS0138 listing (still available):https://amzn.to/4hAhtej

Acrylic case for DSO138:
https://amzn.to/3Yy6qKb (original), https://amzn.to/3YvV1KS (alternative)

Possible icl8038 kit
https://amzn.to/3CmNO8z
https://amzn.to/4hEnkQ1

Other stuff:
multimeter https://amzn.to/3NTWeXo
TC-1 Component tester https://amzn.to/3ArVohy
Soldering iron https://amzn.to/3Cd6tU2

AliExpress Links:
DSO138 - https://s.click.aliexpress.com/e/_DdH...
TC1 - https://s.click.aliexpress.com/e/_DDa...
Function Generator - https://s.click.aliexpress.com/e/_DdO...