I had intended the solder the modified TM1637 to the microcontroller's strip board however I later discovered that the USBTinyISP failed to work. The ICSP shared pins that were also used by the TM1637. I did manage to get the USBAsp ISP to work however I thought it would be better to allow the 4-digit module to be plugged in or removed as needed. I could then use this module in other projects. Luckily I had bought an assortment of female header pins from Ebay that also included a 4x1 size which saved me from cutting a longer one.
I do have spare protoboard, however this build is mostly hooking together other modules and breakout boards with very few through hole components. So I thought I'd save my scarce resources by using crafting lolly sticks to hold everything together..
This is enough to test whether the concept would work before I solder the microcontroller and program it.
Chopped a Poundland USB cable so that the MAX471 can measure the current passing through it. I'm a bit worried about the thinness and the small number of strands of wire being used to charge a phone.
I have a USB charger that outputs directly to a male micro USB - it does not provide a female USB port to plug this into. So I've exapanded the range of charging options this will support
I'll be able to plug my USB charger into the female micro USB breakout. And I can plug a USB-C charge cable into the female USB port - I recycled this from a broken Powerbank.
bornach
