I got to Hack a Day again. Thank you Hack a Day. This time I prepared more than last time. I had about 20 PCBs in stock and not very buggy webshop. But like wow, I didn't expect to get so much headache. Like the shipping: Different from Hong Kong where they can ship for free (or almost), it costs 3.5€ to send the cheapest package from Estonia to Unites States. Like.. wow. And sourcing of components. I didn't have enough batteries nor holders, so I had to source them locally, and the price difference is about 5 times. Oh the component sourcing fun. Asides of that I have been soldering couple of hours every day since the first orders and try to send out first batch tomorrow.
And did you know that to sell stuff you need:
- Working webshop
- Cool product
- BIG stock of everything with long shipping time (PCBs from China)
- Free money for parts
- Envelopes
- Address stickers
- Bubble wrap!
- Zip lock bags
- And if you want to enjoy it - workers
But it is nice. After couple of days the madness will be over and I am smarter. Thank you all for support.
Hey,
Great project!
Might I suggest the MAX4238 instead of the OPA335? It is pin compatible, cheaper, has slightly better characteristics. Does use more power though...
Just a thought. Keep making cool stuff!
It is cheaper, in digikey. Digikey order costs about 50€ so I only do one about once a year. But thank you.
Hi
When using this adapter
Do I need to use 4 wire testing?
Do I need high current on the device I want to test?
I want to use it for find short on mobile phone, so the current can't be high
No, this adapter is 2 wire testing only. So you need to take wire resistance to account.
The current and voltage are low enough to not damage cell phone and other electronic components.