I don't mean to alter existing process :) and eco system. How about skipping some steps, such as silkscreen, platting, metalizing. I don't think these steps are same single batch job in PCB fab. For volume, I know that minimum quantity is 10 pcs and it is fine for most hardware developers. No need to cut down.
If china has it own Gongkai, I believed such similar service is really existed and will never be existent. but as an outsider from china, we cannot figure out such services and you may ;)
I like'd to request for "Super Dirty PCB" services. As a developer and hobbyist, what we need for initial phase is not a full blown PCB with silkscreen, mask, color and mass volume. Yes, we need a barebone PCB without silkscreen, nos mask, no color and less volume. Here is my option for initial commit, actually it is not new and I compiled sources from other sites. Welcome for correction and discussion.
-No solder mask and silk print -No metalized vias and soldering pads , which means the top side and bottom side are not connected. (You can connect with a jumper easily) -Single layer or dual layer options -Trace width and trace spacing – 0.25 mm / 10 mils -Soldering pads – 1.5 mm / 60 mils -Drilling – 0.6 mm / 24 mils or 0.3 mm / 12 mil - No E-test
It's your call Ian, - Delivery and lead time - Sizes - Prices and so on,...
I flashed it and it work well in both XP and Windows 7 :D.
I am from Myanmar. Some of hobbyists in my region use this programmer and I will also share this info to them. One of local supplier sold this beautifully made sandwich style programmer.
As your guide, simply remove PIC and flash booloader first. Then replace crystal with 8MHz. Finally, reconnect programmer and updated firmware (I updated ver 0.5.0). Then connect RB6 (Pin27) to ground.
BTW, I noticed that LEDs are connected at PIC pins 11,12 and 13 in USBPICProg and pins 27,28 at GTP-USB-Lite. So, I simply cut the trace from RB7,RB6 (pin27,28) and connected to Pin 11,12. LED shows signal now.
Mostly, I used PICkit2 as main programmer. For now, I can use reborn USBPICProg as a backup programmer.
Newly arrived. From various sources. Filled my workbench. PICs, LCDs, sensors, GSM/GPRS shields, RFs, Xbees, bluetooth,power modules, keypad, joysticks and so on ...
And later, I recently found a post at Keith’s Electronics Blog. There is also original schematic from manufacturer. It isolates even ground pins of each output. Yes, system ground (Chassis ground) is purposely isolated.
you notice ground conections in outputs are scraped or covered in the schematic? check carefully hi-res picture in OP link.
best regards
Pio[/quote]
Woo, woo, your eyes are sharp. I don't really notice that before. Honestly, I think first that I understood the logic behind this simple transformer. But, after reading and searching many forums, resources, I confused again. After then, I realized that isolation should be consider case by case, not only transformer alone.
Holy crap ... I saw some low quality, no specs, jellybean parts. But never seen such things before. :) They are not just a fake, its a dangerous your benchtop time bomb. :D
What ever is this, - Lets take suggestions, vote, poll for new theme first - Campaign community at the same time - Also call for help, sponsors, judges
Can we(as a community) successfully organize a contest with a new theme, and without bias, in a way that the same community can also compete? >>> No idea, Leave it and lets the community will decide itself.
competitor with pcDuino - we offer the eagle file for ITEAD CORE (http://http://blog.iteadstudio.com/itead-core-eagle-library/), and everyone can build his own baseboard , even the basebaord like DUOO ~ we provide the ITEAD OS SDK for users to driver all ITEAD modules and shields without low-layer driver coding.
ITEAD OS SDK with drivers, interesting. only left $49+ Free shipping option, 31 out of 50 claimed. Not bad at all.
These output texts are from ALFA or just testing with MISO and MOSI jumpering?
Really, BP with UART bridge is very basic task. My BP V3 not work with UART Macro (1) but it works well with Macro (3). I also already found the link you shared http://http://haquesprojects.com/embedded-device-hacking/using-a-bus-pirate-as-a-usb-ttl-serial-converter/ An I noticed that this example use macro(3). So I followed this and use macro(3) and it work for me. I don't brother CTS and RTS pins. I have no idea why macro(1) don't work for my BP also.
