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added info about BOMs, mouser basket, etc…

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demik 2022-03-21 22:04:41 +01:00
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pcb/TashTwenty Tiny/ChangeLog.md Normal file
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## v1.0
- Initial public release

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pcb/TashTwenty Tiny/README.md
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@ -4,6 +4,7 @@ This is a dual PCB design, using mostly through hole components (with the exepti
This folder contains the source KiKad files for the main board. Please check the DB19_IDC20 subfolder for the DB19 to IDC20 adapter.
## BOM
### BOM (main board)
Here is the BOM for the main board. Part number are what was tested on prototypes board but you may find alternatives easily, especially resistors and sockets
@ -22,18 +23,18 @@ Here is the BOM for the main board. Part number are what was tested on prototype
| R7, R9, R12, R13, R14 | 10kΩ | 5 | standard 0.25W carbon film resistor | TRU TC-CFR0W4J0103 |
| U1 | PIC16F1825 | 1 | PIC 8-bit Microcontroller (DIP-14) | PIC16F1825-I/P |
| U2 | 74ACT08 | 1 | Quad TTL 2-Input AND Gate | SN74ACT08N |
| U3 | 3.3V LDO | 1 | | MCP1700-3302E/TO |
| U3 | 3.3V LDO | 1 | 3.3V LDO voltage regulator | MCP1700-3302E/TO |
Optional
| Reference(s) | Value | Quantity | Notes | Part number |
|-----------------------|------------|----------|----------------------------------------|---------------------|
| J1 | - | 1 | 1x2 header + jumper or wire | - |
| U1, U2 | socket | 2 | DIP-14 socket | TRU 14-LC-TT |
| Case | ABS | 1 | Instrument Case, ABS 2.6x2.6" | HM 1593K(TBU|GY|BK) |
| Reference(s) | Value | Quantity | Notes | Part number |
|-----------------------|------------|----------|----------------------------------------|-----------------------|
| J1 | - | 1 | 1x2 header + jumper or wire | - |
| U1, U2 | socket | 2 | DIP-14 socket | TRU 14-LC-TT |
| Case | ABS | 1 | Instrument Case, ABS 2.6x2.6" | HM 1593K(TBU\|GY\|BK) |
Using sockets is recommended because it will allow you to reclaim the gates and microcontroler if your board is broken.
J1 is reserver for future use, you may want to use a wire for it. (or a resistor leg)
Using sockets is recommended because it will allow you to reclaim the gates and microcontroler if your board is broken. This will also allow you to upgrade the firmware if a future firmware is released.
J1 is reserved for future use, you may want to use a wire for it. (or a resistor leg)
### BOM (adapter board)
@ -47,6 +48,14 @@ J1 is reserver for future use, you may want to use a wire for it. (or a resistor
Here is a mouser link (without the case):
- https://www.mouser.fr/ProjectManager/ProjectDetail.aspx?AccessID=6e66469657
### Building
## PCBs
the PCBs are simple 2 layers boards. The gerbers are avaible in the release section.
Check for the following files:
* TTT_10.zip: main board revision 1.0
* DB19_IDC20.zip: adapter board revision 1.0
You should be use any mainstream PCB manufacturer for theses. Nothing special about them. PCB thickness should FR-4 with a 1.6mm thickness
On JLCPCB, select "Specify a location" to the option "Remove Order Number"
## Building
Building is straightworfard. It's recommended to start with the SD Card connector, then components, and headers + sockets last.