Posts Tagged ‘Raspberry Pi’
Reworking the revised Raspy Juice Expansion Board left my table a mess!
All that because I received this on Friday… 2 panels of 4 printed circuit boards (PCB) of a revised version (Rev.1) for my Project Raspy Juice, an experimental expansion board for the Raspberry Pi low-cost educational computer.
Manually soldering up tiny surface-mount devices (SMD) onto a single PCB can be time-consuming, especially when there are many different types of component devices. I used to do that with an older revision of the above PCB when it came in single-unit pieces. Like the pictures below… Just to solder up the components of the below single-unit PCB into the one on the below-right would take me a good whole morning.
Anyway, on Saturday, in the same time I used to populate one PCB in the past, I managed to solder up 4 PCB’s in one go. Here’s a picture of the completed panel being washed in the basin…
A quick ‘smoke’ test was done just to see if the main circuits still work.
You know, I hate to see the panel of 4 PCBA being ‘broken’ up to actually use it for the Raspberry Pi purpose — it felt like a nice piece of work. Anyways… yyeeeaarrrrgghhh!!! There it goes >>>>>And a picture of the old versus the new…
So… Why a revised Raspy Juice Rev.1? I just couldn’t stand it that, mechanically, the PCB didn’t sit on the Raspberry Pi PCB properly.
- The dimensions of the old version were just a little off.
- The stereo jack that provided for the serial port console was also too near to the Raspberry Pi HDMI socket.
- The power socket near the top-left of each PCBA was incorrectly oriented, and the power wires that came out of it rubbed against the pins of another header.
- The seven JST connectors all had electrically incorrect orientation.
- Other than the above, only some minor electrical alterations were updated in the electronics.
To be continued…