Merge pull request #157 from NollKollTroll/develop

Upated some instructions

Author: thejpster

ASSEMBLY.md

@@ -37,13 +37,16 @@ The Neotron Pico kit does assume you can solder at an intermediate level. If you
 
 ## The Interactive Bill of Materials
 
-The best way to fit the components to your PCB is to use the Interactive Bill of Materials (also known as the IBOM). This is a web-page with a diagram of the PCB and a list of all the components. As you click a component it is highlighted on the PC. Conversely, if you click on the diagram, the relevant component is highlighted in the table. Do ensure you click the *"Sourced"* checkbox when you have determined you have the part in stock, and that you click the *"Placed"* checkbox when the component has been fitted. If your PCB was supplied with some parts already fitted, tick those off now.
+The best way to find where to fit the components to your PCB is to use the Interactive Bill of Materials (also known as the IBOM). This is a web-page with a diagram of the PCB and a list of all the components. As you click a component it is highlighted on the PC. Conversely, if you click on the diagram, the relevant component is highlighted in the table. Do ensure you click the *"Sourced"* checkbox when you have determined you have the part in stock, and that you click the *"Placed"* checkbox when the component has been fitted. If your PCB was supplied with some parts already fitted, tick those off now.
+
+The IBOM file can be found by clicking the Releases shortcut available to the right on the GitHub page, or downloading it directly: [IBOM v1.1.0](https://github.com/Neotron-Compute/Neotron-Pico/releases/download/v1.1.0/neotron-pico-v1.1.0-ibom.html). Open the saved file in a browser.
 
 ## But what order should I fit things in?
 
 The general rule is to fit the parts with the lowest Z-height first (i.e. the flat ones, that stick out the least). This means if you flip the PCB over to solder on the underside, you won't have a tall component preventing the board from lying flat and causing the component you are currently trying to solder to fall out of its hole. A suggested order is:
 
 * All surface mount components (including U401, which may not have been presoldered in your kit)
+  * U401 has a line to the left of the chip which should correspond to the line to the left of the PCB foot print
 * Short-circuit JP1201 *or* JP1201
   * If you have a DS1307 short JP1201 to give it 5V
   * If you have an MCP7940, short JP1202 to give it 3.3V
@@ -54,8 +57,15 @@ The general rule is to fit the parts with the lowest Z-height first (i.e. the fl
 * The PSU module (U1301)
 * The Raspberry Pi Pico (if you want to solder it straight to the board) (U201)
 * Any 2.54mm pin headers and jumpers
-  * Don't worry about J906, J907 and J908 - they're just for debugging/testing/probing
-  * Ensure you leave out pin 8 on the J802 PC case audio connector, as most cases have a blank position on the mating connector to make sure you can't put it in backwards. Pin 8 is the top row, one in from the right; if you look carefully it's the only pad on that 10-way header that doesn't have a PCB trace running to it.
+  * Don't worry about J906, J907 and J908 - they're just for debugging/testing/probing. It's easier to put an oscilloscope probe directly into a hole.
+  * Ensure you leave out pin 8 on the J802 PC case audio connector, as most cases have a blank position on the mating connector to make sure you can't put it in backwards. See *Not using a PCB Case* if you don't actually connect this header to your ATX case, as you'll need to fit some jumpers<p>
+```
+.    +----+----+----+----+----+
+.    |  2 |  3 |  6 |  X | 10 |
+Case +----+----+----+----+----+
+.    |  1 |  4 |  5 |  7 |  9 |
+.    +----+----+----+----+----+
+```
 * Any 2.54mm pin sockets (e.g. for the Raspberry Pi Pico, if you didn't solder it down directly earlier)
 * The Expansion Connectors (J902, J903, J904, J905)
 * The VGA Connector (J401)

README.md

@@ -462,6 +462,10 @@ Unless you explicitly state otherwise, any contribution intentionally submitted
 * Microchip MCP7940N Real-Time Clock
   * Info Page: <https://www.microchip.com/wwwproducts/en/MCP7940N>
 
+## Assembly instructions
+
+See [ASSEMBLY.md](./ASSEMBLY.md) for instructions on how to assemble the board.
+
 ## How hard is this to solder?
 
 Typically, I get the boards from JLCPCB with most of the surface-mount components already fitted. This includes all the LEDS, small inductors, resistors and small capacitors (all 0805 size), the transistors (all SOT-23), and whichever of the larger ICs they happen to have in stock. All that's left is the larger ICs, and the through-hole connectors.